diff --git a/Cargo.toml b/Cargo.toml index 2302fd4..f3b02f4 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -1,6 +1,6 @@ [package] name = "core_io" -version = "0.1.20161028" +version = "0.1.20170408" authors = ["The Rust Project Developers", "Jethro Beekman"] license = "MIT/Apache-2.0" description = """ diff --git a/mapping.rs b/mapping.rs index 6c1079f..36c102c 100644 --- a/mapping.rs +++ b/mapping.rs @@ -172,3 +172,101 @@ -Mapping("aef18be1bc4e03617177c5e9df1164ce3df49ba2","32820c149b4b92aafc5f8d2e48a4265c5d865a1d") -Mapping("c59cb71d976ceabf00c7da0224a795fab530601e","32820c149b4b92aafc5f8d2e48a4265c5d865a1d") -Mapping("3f4408347d2109803edbf53c89c8bce575de4b67","32820c149b4b92aafc5f8d2e48a4265c5d865a1d") +-Mapping("cae6ab1c458ade22b4c228fcd4195917c96e2465","d2bc30b03fa4bf5425d080710f681f36f58f1706") +-Mapping("71c06a56a120a0d5e3b224105ee3e6754f83e5fa","9a5cef4de51c1c90fb2d05b0c7e6feb9cf0224d6") 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Buffering wrappers for I/O traits + ++use core::prelude::v1::*; + use io::prelude::*; + +-use cmp; +-use error; +-use fmt; ++use core::cmp; ++use core::fmt; + use io::{self, DEFAULT_BUF_SIZE, Error, ErrorKind, SeekFrom}; +-use memchr; ++use io::memchr; + + /// The `BufReader` struct adds buffering to any reader. + /// +@@ -46,7 +46,6 @@ use memchr; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufReader { + inner: R, + buf: Box<[u8]>, +@@ -69,7 +68,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: R) -> BufReader { + BufReader::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -90,7 +88,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: R) -> BufReader { + BufReader { + inner: inner, +@@ -118,7 +115,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &R { &self.inner } + + /// Gets a mutable reference to the underlying reader. +@@ -139,7 +135,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut R { &mut self.inner } + + /// Unwraps this `BufReader`, returning the underlying reader. +@@ -160,11 +155,9 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> R { self.inner } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for BufReader { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + // If we don't have any buffered data and we're doing a massive read +@@ -182,7 +175,6 @@ impl Read for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl BufRead for BufReader { + fn fill_buf(&mut self) -> io::Result<&[u8]> { + // If we've reached the end of our internal buffer then we need to fetch +@@ -202,7 +194,6 @@ impl BufRead for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufReader where R: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufReader") +@@ -212,7 +203,6 @@ impl fmt::Debug for BufReader where R: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufReader { + /// Seek to an offset, in bytes, in the underlying reader. + /// +@@ -305,7 +295,6 @@ impl Seek for BufReader { + /// [`Write`]: ../../std/io/trait.Write.html + /// [`write`]: ../../std/net/struct.TcpStream.html#method.write + /// [`TcpStream`]: ../../std/net/struct.TcpStream.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufWriter { + inner: Option, + buf: Vec, +@@ -340,7 +329,6 @@ pub struct BufWriter { + /// }; + /// ``` + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct IntoInnerError(W, Error); + + impl BufWriter { +@@ -354,7 +342,6 @@ impl BufWriter { + /// + /// let mut buffer = BufWriter::new(TcpStream::connect("127.0.0.1:34254").unwrap()); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> BufWriter { + BufWriter::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -372,7 +359,6 @@ impl BufWriter { + /// let stream = TcpStream::connect("127.0.0.1:34254").unwrap(); + /// let mut buffer = BufWriter::with_capacity(100, stream); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> BufWriter { + BufWriter { + inner: Some(inner), +@@ -421,7 +407,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.as_ref().unwrap() } + + /// Gets a mutable reference to the underlying writer. +@@ -439,7 +424,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.as_mut().unwrap() } + + /// Unwraps this `BufWriter`, returning the underlying writer. +@@ -457,7 +441,6 @@ impl BufWriter { + /// // unwrap the TcpStream and flush the buffer + /// let stream = buffer.into_inner().unwrap(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(mut self) -> Result>> { + match self.flush_buf() { + Err(e) => Err(IntoInnerError(self, e)), +@@ -466,7 +449,6 @@ impl BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for BufWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.buf.len() + buf.len() > self.buf.capacity() { +@@ -486,7 +468,6 @@ impl Write for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufWriter") +@@ -496,7 +477,6 @@ impl fmt::Debug for BufWriter where W: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufWriter { + /// Seek to the offset, in bytes, in the underlying writer. + /// +@@ -506,7 +486,6 @@ impl Seek for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Drop for BufWriter { + fn drop(&mut self) { + if self.inner.is_some() && !self.panicked { +@@ -545,7 +524,6 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn error(&self) -> &Error { &self.1 } + + /// Returns the buffered writer instance which generated the error. +@@ -578,23 +556,13 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> W { self.0 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl From> for Error { + fn from(iie: IntoInnerError) -> Error { iie.1 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for IntoInnerError { +- fn description(&self) -> &str { +- error::Error::description(self.error()) +- } +-} +- +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for IntoInnerError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.error().fmt(f) +@@ -649,7 +617,6 @@ impl fmt::Display for IntoInnerError { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct LineWriter { + inner: BufWriter, + need_flush: bool, +@@ -670,7 +637,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> LineWriter { + // Lines typically aren't that long, don't use a giant buffer + LineWriter::with_capacity(1024, inner) +@@ -691,7 +657,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> LineWriter { + LineWriter { + inner: BufWriter::with_capacity(cap, inner), +@@ -715,7 +680,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.get_ref() } + + /// Gets a mutable reference to the underlying writer. +@@ -738,7 +702,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.get_mut() } + + /// Unwraps this `LineWriter`, returning the underlying writer. +@@ -760,7 +723,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> Result>> { + self.inner.into_inner().map_err(|IntoInnerError(buf, e)| { + IntoInnerError(LineWriter { +@@ -771,7 +733,6 @@ impl LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for LineWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.need_flush { +@@ -816,7 +777,6 @@ impl Write for LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for LineWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("LineWriter") +diff --git a/cursor.rs b/cursor.rs +index 60767ea..199cad1 100644 +--- a/cursor.rs ++++ b/cursor.rs +@@ -8,10 +8,11 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + ++use core::prelude::v1::*; + use io::prelude::*; + +-use core::convert::TryInto; +-use cmp; ++#[cfg(feature = "collections")] use core::convert::TryInto; ++use core::cmp; + use io::{self, SeekFrom, Error, ErrorKind}; + + /// A `Cursor` wraps another type and provides it with a +@@ -79,7 +80,6 @@ use io::{self, SeekFrom, Error, ErrorKind}; + /// assert_eq!(&buff.get_ref()[5..15], &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]); + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Clone, Debug)] + pub struct Cursor { + inner: T, +@@ -98,7 +98,6 @@ impl Cursor { + /// # fn force_inference(_: &Cursor>) {} + /// # force_inference(&buff); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: T) -> Cursor { + Cursor { pos: 0, inner: inner } + } +@@ -116,7 +115,6 @@ impl Cursor { + /// + /// let vec = buff.into_inner(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> T { self.inner } + + /// Gets a reference to the underlying value in this cursor. +@@ -132,7 +130,6 @@ impl Cursor { + /// + /// let reference = buff.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &T { &self.inner } + + /// Gets a mutable reference to the underlying value in this cursor. +@@ -151,7 +148,6 @@ impl Cursor { + /// + /// let reference = buff.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut T { &mut self.inner } + + /// Returns the current position of this cursor. +@@ -173,7 +169,6 @@ impl Cursor { + /// buff.seek(SeekFrom::Current(-1)).unwrap(); + /// assert_eq!(buff.position(), 1); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn position(&self) -> u64 { self.pos } + + /// Sets the position of this cursor. +@@ -193,11 +188,9 @@ impl Cursor { + /// buff.set_position(4); + /// assert_eq!(buff.position(), 4); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn set_position(&mut self, pos: u64) { self.pos = pos; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl io::Seek for Cursor where T: AsRef<[u8]> { + fn seek(&mut self, style: SeekFrom) -> io::Result { + let (base_pos, offset) = match style { +@@ -218,25 +211,27 @@ impl io::Seek for Cursor where T: AsRef<[u8]> { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Cursor where T: AsRef<[u8]> { + fn read(&mut self, buf: &mut [u8]) -> io::Result { +- let n = Read::read(&mut self.fill_buf()?, buf)?; ++ let n = Read::read(&mut self.get_buf()?, buf)?; + self.pos += n as u64; + Ok(n) + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl BufRead for Cursor where T: AsRef<[u8]> { +- fn fill_buf(&mut self) -> io::Result<&[u8]> { ++impl Cursor where T: AsRef<[u8]> { ++ fn get_buf(&mut self) -> io::Result<&[u8]> { + let amt = cmp::min(self.pos, self.inner.as_ref().len() as u64); + Ok(&self.inner.as_ref()[(amt as usize)..]) + } ++} ++ ++#[cfg(feature = "collections")] ++impl BufRead for Cursor where T: AsRef<[u8]> { ++ fn fill_buf(&mut self) -> io::Result<&[u8]> { self.get_buf() } + fn consume(&mut self, amt: usize) { self.pos += amt as u64; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for Cursor<&'a mut [u8]> { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -248,7 +243,7 @@ impl<'a> Write for Cursor<&'a mut [u8]> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature = "collections")] + impl Write for Cursor> { + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos: usize = self.position().try_into().map_err(|_| { +@@ -278,8 +273,8 @@ impl Write for Cursor> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "cursor_box_slice", since = "1.5.0")] +-impl Write for Cursor> { ++#[cfg(feature = "alloc")] ++impl Write for Cursor<::alloc::boxed::Box<[u8]>> { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos = cmp::min(self.pos, self.inner.len() as u64); +diff --git a/error.rs b/error.rs +index 6d4da2e..14cfe1a 100644 +--- a/error.rs ++++ b/error.rs +@@ -8,11 +8,16 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use error; +-use fmt; +-use result; +-use sys; +-use convert::From; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++#[cfg(not(feature="alloc"))] use ::FakeBox as Box; ++use core::convert::Into; ++use core::fmt; ++use core::marker::{Send, Sync}; ++use core::option::Option::{self, Some, None}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(not(feature="collections"))] use ::ErrorString as String; ++use core::convert::From; + + /// A specialized [`Result`](../result/enum.Result.html) type for I/O + /// operations. +@@ -44,7 +49,6 @@ use convert::From; + /// Ok(buffer) + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub type Result = result::Result; + + /// The error type for I/O operations of the `Read`, `Write`, `Seek`, and +@@ -56,7 +60,6 @@ pub type Result = result::Result; + /// + /// [`ErrorKind`]: enum.ErrorKind.html + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Error { + repr: Repr, + } +@@ -64,13 +67,16 @@ pub struct Error { + enum Repr { + Os(i32), + Simple(ErrorKind), ++ #[cfg(feature="alloc")] + Custom(Box), ++ #[cfg(not(feature="alloc"))] ++ Custom(Custom), + } + + #[derive(Debug)] + struct Custom { + kind: ErrorKind, +- error: Box, ++ error: String, + } + + /// A list specifying general categories of I/O error. +@@ -82,47 +88,34 @@ struct Custom { + /// + /// [`io::Error`]: struct.Error.html + #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)] +-#[stable(feature = "rust1", since = "1.0.0")] + #[allow(deprecated)] + pub enum ErrorKind { + /// An entity was not found, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + NotFound, + /// The operation lacked the necessary privileges to complete. +- #[stable(feature = "rust1", since = "1.0.0")] + PermissionDenied, + /// The connection was refused by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionRefused, + /// The connection was reset by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionReset, + /// The connection was aborted (terminated) by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionAborted, + /// The network operation failed because it was not connected yet. +- #[stable(feature = "rust1", since = "1.0.0")] + NotConnected, + /// A socket address could not be bound because the address is already in + /// use elsewhere. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrInUse, + /// A nonexistent interface was requested or the requested address was not + /// local. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrNotAvailable, + /// The operation failed because a pipe was closed. +- #[stable(feature = "rust1", since = "1.0.0")] + BrokenPipe, + /// An entity already exists, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + AlreadyExists, + /// The operation needs to block to complete, but the blocking operation was + /// requested to not occur. +- #[stable(feature = "rust1", since = "1.0.0")] + WouldBlock, + /// A parameter was incorrect. +- #[stable(feature = "rust1", since = "1.0.0")] + InvalidInput, + /// Data not valid for the operation were encountered. + /// +@@ -134,10 +127,8 @@ pub enum ErrorKind { + /// `InvalidData` if the file's contents are not valid UTF-8. + /// + /// [`InvalidInput`]: #variant.InvalidInput +- #[stable(feature = "io_invalid_data", since = "1.2.0")] + InvalidData, + /// The I/O operation's timeout expired, causing it to be canceled. +- #[stable(feature = "rust1", since = "1.0.0")] + TimedOut, + /// An error returned when an operation could not be completed because a + /// call to [`write()`] returned [`Ok(0)`]. +@@ -148,15 +139,12 @@ pub enum ErrorKind { + /// + /// [`write()`]: ../../std/io/trait.Write.html#tymethod.write + /// [`Ok(0)`]: ../../std/io/type.Result.html +- #[stable(feature = "rust1", since = "1.0.0")] + WriteZero, + /// This operation was interrupted. + /// + /// Interrupted operations can typically be retried. +- #[stable(feature = "rust1", since = "1.0.0")] + Interrupted, + /// Any I/O error not part of this list. +- #[stable(feature = "rust1", since = "1.0.0")] + Other, + + /// An error returned when an operation could not be completed because an +@@ -165,15 +153,10 @@ pub enum ErrorKind { + /// This typically means that an operation could only succeed if it read a + /// particular number of bytes but only a smaller number of bytes could be + /// read. +- #[stable(feature = "read_exact", since = "1.6.0")] + UnexpectedEof, + + /// A marker variant that tells the compiler that users of this enum cannot + /// match it exhaustively. +- #[unstable(feature = "io_error_internals", +- reason = "better expressed through extensible enums that this \ +- enum cannot be exhaustively matched against", +- issue = "0")] + #[doc(hidden)] + __Nonexhaustive, + } +@@ -206,7 +189,6 @@ impl ErrorKind { + + /// Intended for use for errors not exposed to the user, where allocating onto + /// the heap (for normal construction via Error::new) is too costly. +-#[stable(feature = "io_error_from_errorkind", since = "1.14.0")] + impl From for Error { + fn from(kind: ErrorKind) -> Error { + Error { +@@ -234,14 +216,13 @@ impl Error { + /// // errors can also be created from other errors + /// let custom_error2 = Error::new(ErrorKind::Interrupted, custom_error); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(kind: ErrorKind, error: E) -> Error +- where E: Into> ++ where E: Into + { + Self::_new(kind, error.into()) + } + +- fn _new(kind: ErrorKind, error: Box) -> Error { ++ fn _new(kind: ErrorKind, error: String) -> Error { + Error { + repr: Repr::Custom(Box::new(Custom { + kind: kind, +@@ -250,24 +231,6 @@ impl Error { + } + } + +- /// Returns an error representing the last OS error which occurred. +- /// +- /// This function reads the value of `errno` for the target platform (e.g. +- /// `GetLastError` on Windows) and will return a corresponding instance of +- /// `Error` for the error code. +- /// +- /// # Examples +- /// +- /// ``` +- /// use std::io::Error; +- /// +- /// println!("last OS error: {:?}", Error::last_os_error()); +- /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] +- pub fn last_os_error() -> Error { +- Error::from_raw_os_error(sys::os::errno() as i32) +- } +- + /// Creates a new instance of an `Error` from a particular OS error code. + /// + /// # Examples +@@ -293,7 +256,6 @@ impl Error { + /// assert_eq!(error.kind(), io::ErrorKind::AddrInUse); + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn from_raw_os_error(code: i32) -> Error { + Error { repr: Repr::Os(code) } + } +@@ -324,7 +286,6 @@ impl Error { + /// print_os_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn raw_os_error(&self) -> Option { + match self.repr { + Repr::Os(i) => Some(i), +@@ -358,12 +319,11 @@ impl Error { + /// print_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_ref(&self) -> Option<&(error::Error+Send+Sync+'static)> { ++ pub fn get_ref(&self) -> Option<&String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref c) => Some(&*c.error), ++ Repr::Custom(ref c) => Some(&c.error), + } + } + +@@ -429,12 +389,11 @@ impl Error { + /// print_error(&change_error(Error::new(ErrorKind::Other, MyError::new()))); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_mut(&mut self) -> Option<&mut (error::Error+Send+Sync+'static)> { ++ pub fn get_mut(&mut self) -> Option<&mut String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref mut c) => Some(&mut *c.error), ++ Repr::Custom(ref mut c) => Some(&mut c.error), + } + } + +@@ -463,8 +422,7 @@ impl Error { + /// print_error(Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn into_inner(self) -> Option> { ++ pub fn into_inner(self) -> Option { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +@@ -490,10 +448,9 @@ impl Error { + /// print_error(Error::new(ErrorKind::AddrInUse, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn kind(&self) -> ErrorKind { + match self.repr { +- Repr::Os(code) => sys::decode_error_kind(code), ++ Repr::Os(_code) => ErrorKind::Other, + Repr::Custom(ref c) => c.kind, + Repr::Simple(kind) => kind, + } +@@ -504,21 +461,18 @@ impl fmt::Debug for Repr { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match *self { + Repr::Os(ref code) => +- fmt.debug_struct("Os").field("code", code) +- .field("message", &sys::os::error_string(*code)).finish(), ++ fmt.debug_struct("Os").field("code", code).finish(), + Repr::Custom(ref c) => fmt.debug_tuple("Custom").field(c).finish(), + Repr::Simple(kind) => fmt.debug_tuple("Kind").field(&kind).finish(), + } + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for Error { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match self.repr { + Repr::Os(code) => { +- let detail = sys::os::error_string(code); +- write!(fmt, "{} (os error {})", detail, code) ++ write!(fmt, "os error {}", code) + } + Repr::Custom(ref c) => c.error.fmt(fmt), + Repr::Simple(kind) => write!(fmt, "{}", kind.as_str()), +@@ -526,24 +480,6 @@ impl fmt::Display for Error { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for Error { +- fn description(&self) -> &str { +- match self.repr { +- Repr::Os(..) | Repr::Simple(..) => self.kind().as_str(), +- Repr::Custom(ref c) => c.error.description(), +- } +- } +- +- fn cause(&self) -> Option<&error::Error> { +- match self.repr { +- Repr::Os(..) => None, +- Repr::Simple(..) => None, +- Repr::Custom(ref c) => c.error.cause(), +- } +- } +-} +- + fn _assert_error_is_sync_send() { + fn _is_sync_send() {} + _is_sync_send::(); +diff --git a/impls.rs b/impls.rs +index f691289..c4374d3 100644 +--- a/impls.rs ++++ b/impls.rs +@@ -8,26 +8,31 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use cmp; +-use io::{self, SeekFrom, Read, Write, Seek, BufRead, Error, ErrorKind}; +-use fmt; +-use mem; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++use core::cmp; ++use io::{self, SeekFrom, Read, Write, Seek, Error, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; ++use core::fmt; ++use core::mem; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(feature="collections")] use collections::vec::Vec; + + // ============================================================================= + // Forwarding implementations + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, R: Read + ?Sized> Read for &'a mut R { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -38,7 +43,6 @@ impl<'a, R: Read + ?Sized> Read for &'a mut R { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, W: Write + ?Sized> Write for &'a mut W { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -56,12 +60,11 @@ impl<'a, W: Write + ?Sized> Write for &'a mut W { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, S: Seek + ?Sized> Seek for &'a mut S { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -80,18 +83,20 @@ impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Read for Box { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -102,7 +107,7 @@ impl Read for Box { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Write for Box { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -120,12 +125,12 @@ impl Write for Box { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Seek for Box { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Box { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -151,7 +156,6 @@ impl BufRead for Box { + /// + /// Note that reading updates the slice to point to the yet unread part. + /// The slice will be empty when EOF is reached. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Read for &'a [u8] { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { +@@ -193,7 +197,7 @@ impl<'a> Read for &'a [u8] { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a> BufRead for &'a [u8] { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(*self) } +@@ -207,7 +211,6 @@ impl<'a> BufRead for &'a [u8] { + /// + /// Note that writing updates the slice to point to the yet unwritten part. + /// The slice will be empty when it has been completely overwritten. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for &'a mut [u8] { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -233,7 +236,7 @@ impl<'a> Write for &'a mut [u8] { + + /// Write is implemented for `Vec` by appending to the vector. + /// The vector will grow as needed. +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Write for Vec { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { +diff --git a/memchr.rs b/memchr.rs +index 3824a5f..312cf47 100644 +--- a/memchr.rs ++++ b/memchr.rs +@@ -11,10 +11,12 @@ + // Original implementation taken from rust-memchr + // Copyright 2015 Andrew Gallant, bluss and Nicolas Koch + ++pub use self::fallback::{memchr,memrchr}; ++ + #[allow(dead_code)] + pub mod fallback { +- use cmp; +- use mem; ++ use core::cmp; ++ use core::mem; + + const LO_U64: u64 = 0x0101010101010101; + const HI_U64: u64 = 0x8080808080808080; +diff --git a/mod.rs b/mod.rs +index 58788cd..0ededaa 100644 +--- a/mod.rs ++++ b/mod.rs +@@ -253,44 +253,34 @@ + //! [`?` operator]: ../../book/syntax-index.html + //! [`read()`]: trait.Read.html#tymethod.read + +-#![stable(feature = "rust1", since = "1.0.0")] +- +-use cmp; ++use core::cmp; + use core::str as core_str; +-use error as std_error; +-use fmt; +-use result; +-use str; +-use memchr; +- +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::{BufReader, BufWriter, LineWriter}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::IntoInnerError; +-#[stable(feature = "rust1", since = "1.0.0")] ++use core::fmt; ++use core::iter::{Iterator}; ++use core::marker::Sized; ++#[cfg(feature="collections")] use core::ops::{Drop, FnOnce}; ++use core::option::Option::{self, Some, None}; ++use core::result::Result::{Ok, Err}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++use core::str; ++#[cfg(feature="collections")] use collections::vec::Vec; ++mod memchr; ++ ++#[cfg(feature="collections")] pub use self::buffered::{BufReader, BufWriter, LineWriter}; ++#[cfg(feature="collections")] pub use self::buffered::IntoInnerError; + pub use self::cursor::Cursor; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::error::{Result, Error, ErrorKind}; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::util::{copy, sink, Sink, empty, Empty, repeat, Repeat}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{stdin, stdout, stderr, _print, Stdin, Stdout, Stderr}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{StdoutLock, StderrLock, StdinLock}; +-#[unstable(feature = "libstd_io_internals", issue = "0")] +-#[doc(no_inline, hidden)] +-pub use self::stdio::{set_panic, set_print}; + + pub mod prelude; +-mod buffered; ++#[cfg(feature="collections")] mod buffered; + mod cursor; + mod error; + mod impls; +-mod lazy; + mod util; +-mod stdio; + +-const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; ++const DEFAULT_BUF_SIZE: usize = 8 * 1024; + + // A few methods below (read_to_string, read_line) will append data into a + // `String` buffer, but we need to be pretty careful when doing this. The +@@ -310,6 +300,7 @@ const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; + // 2. We're passing a raw buffer to the function `f`, and it is expected that + // the function only *appends* bytes to the buffer. We'll get undefined + // behavior if existing bytes are overwritten to have non-UTF-8 data. ++#[cfg(feature="collections")] + fn append_to_string(buf: &mut String, f: F) -> Result + where F: FnOnce(&mut Vec) -> Result + { +@@ -341,6 +332,7 @@ fn append_to_string(buf: &mut String, f: F) -> Result + // of data to return. Simply tacking on an extra DEFAULT_BUF_SIZE space every + // time is 4,500 times (!) slower than this if the reader has a very small + // amount of data to return. ++#[cfg(feature="collections")] + fn read_to_end(r: &mut R, buf: &mut Vec) -> Result { + let start_len = buf.len(); + let mut len = start_len; +@@ -423,7 +415,6 @@ fn read_to_end(r: &mut R, buf: &mut Vec) -> Result + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Read { + /// Pull some bytes from this source into the specified buffer, returning + /// how many bytes were read. +@@ -473,7 +464,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read(&mut self, buf: &mut [u8]) -> Result; + + /// Read all bytes until EOF in this source, placing them into `buf`. +@@ -515,7 +505,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_end(&mut self, buf: &mut Vec) -> Result { + read_to_end(self, buf) + } +@@ -553,7 +543,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_string(&mut self, buf: &mut String) -> Result { + // Note that we do *not* call `.read_to_end()` here. We are passing + // `&mut Vec` (the raw contents of `buf`) into the `read_to_end` +@@ -614,7 +604,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "read_exact", since = "1.6.0")] + fn read_exact(&mut self, mut buf: &mut [u8]) -> Result<()> { + while !buf.is_empty() { + match self.read(buf) { +@@ -666,7 +655,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + + /// Transforms this `Read` instance to an `Iterator` over its bytes. +@@ -696,7 +684,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn bytes(self) -> Bytes where Self: Sized { + Bytes { inner: self } + } +@@ -733,10 +720,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[unstable(feature = "io", reason = "the semantics of a partial read/write \ +- of where errors happen is currently \ +- unclear and may change", +- issue = "27802")] + fn chars(self) -> Chars where Self: Sized { + Chars { inner: self } + } +@@ -771,7 +754,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn chain(self, next: R) -> Chain where Self: Sized { + Chain { first: self, second: next, done_first: false } + } +@@ -805,7 +787,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn take(self, limit: u64) -> Take where Self: Sized { + Take { inner: self, limit: limit } + } +@@ -845,7 +826,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Write { + /// Write a buffer into this object, returning how many bytes were written. + /// +@@ -885,7 +865,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write(&mut self, buf: &[u8]) -> Result; + + /// Flush this output stream, ensuring that all intermediately buffered +@@ -911,7 +890,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn flush(&mut self) -> Result<()>; + + /// Attempts to write an entire buffer into this write. +@@ -938,7 +916,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_all(&mut self, mut buf: &[u8]) -> Result<()> { + while !buf.is_empty() { + match self.write(buf) { +@@ -990,7 +967,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_fmt(&mut self, fmt: fmt::Arguments) -> Result<()> { + // Create a shim which translates a Write to a fmt::Write and saves + // off I/O errors. instead of discarding them +@@ -1046,7 +1022,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + } + +@@ -1076,7 +1051,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Seek { + /// Seek to an offset, in bytes, in a stream. + /// +@@ -1092,7 +1066,6 @@ pub trait Seek { + /// Seeking to a negative offset is considered an error. + /// + /// [`SeekFrom::Start`]: enum.SeekFrom.html#variant.Start +- #[stable(feature = "rust1", since = "1.0.0")] + fn seek(&mut self, pos: SeekFrom) -> Result; + } + +@@ -1102,29 +1075,26 @@ pub trait Seek { + /// + /// [`Seek`]: trait.Seek.html + #[derive(Copy, PartialEq, Eq, Clone, Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub enum SeekFrom { + /// Set the offset to the provided number of bytes. +- #[stable(feature = "rust1", since = "1.0.0")] +- Start(#[stable(feature = "rust1", since = "1.0.0")] u64), ++ Start(u64), + + /// Set the offset to the size of this object plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- End(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ End(i64), + + /// Set the offset to the current position plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- Current(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ Current(i64), + } + ++#[cfg(feature="collections")] + fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + -> Result { + let mut read = 0; +@@ -1204,7 +1174,7 @@ fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + /// # } + /// ``` + /// +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub trait BufRead: Read { + /// Fills the internal buffer of this object, returning the buffer contents. + /// +@@ -1249,7 +1219,6 @@ pub trait BufRead: Read { + /// // ensure the bytes we worked with aren't returned again later + /// stdin.consume(length); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn fill_buf(&mut self) -> Result<&[u8]>; + + /// Tells this buffer that `amt` bytes have been consumed from the buffer, +@@ -1271,7 +1240,6 @@ pub trait BufRead: Read { + /// that method's example includes an example of `consume()`. + /// + /// [`fill_buf()`]: #tymethod.fill_buf +- #[stable(feature = "rust1", since = "1.0.0")] + fn consume(&mut self, amt: usize); + + /// Read all bytes into `buf` until the delimiter `byte` or EOF is reached. +@@ -1313,7 +1281,6 @@ pub trait BufRead: Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_until(&mut self, byte: u8, buf: &mut Vec) -> Result { + read_until(self, byte, buf) + } +@@ -1360,7 +1327,6 @@ pub trait BufRead: Read { + /// buffer.clear(); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_line(&mut self, buf: &mut String) -> Result { + // Note that we are not calling the `.read_until` method here, but + // rather our hardcoded implementation. For more details as to why, see +@@ -1397,7 +1363,6 @@ pub trait BufRead: Read { + /// println!("{:?}", content.unwrap()); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn split(self, byte: u8) -> Split where Self: Sized { + Split { buf: self, delim: byte } + } +@@ -1431,7 +1396,6 @@ pub trait BufRead: Read { + /// Each line of the iterator has the same error semantics as [`BufRead::read_line()`]. + /// + /// [`BufRead::read_line()`]: trait.BufRead.html#method.read_line +- #[stable(feature = "rust1", since = "1.0.0")] + fn lines(self) -> Lines where Self: Sized { + Lines { buf: self } + } +@@ -1443,14 +1407,12 @@ pub trait BufRead: Read { + /// Please see the documentation of [`chain()`] for more details. + /// + /// [`chain()`]: trait.Read.html#method.chain +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Chain { + first: T, + second: U, + done_first: bool, + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Chain { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.debug_struct("Chain") +@@ -1460,7 +1422,6 @@ impl fmt::Debug for Chain { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Chain { + fn read(&mut self, buf: &mut [u8]) -> Result { + if !self.done_first { +@@ -1473,7 +1434,7 @@ impl Read for Chain { + } + } + +-#[stable(feature = "chain_bufread", since = "1.9.0")] ++#[cfg(feature="collections")] + impl BufRead for Chain { + fn fill_buf(&mut self) -> Result<&[u8]> { + if !self.done_first { +@@ -1500,7 +1461,6 @@ impl BufRead for Chain { + /// Please see the documentation of [`take()`] for more details. + /// + /// [`take()`]: trait.Read.html#method.take +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Debug)] + pub struct Take { + inner: T, +@@ -1535,7 +1495,6 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn limit(&self) -> u64 { self.limit } + + /// Consumes the `Take`, returning the wrapped reader. +@@ -1558,13 +1517,11 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "io_take_into_inner", since = "1.15.0")] + pub fn into_inner(self) -> T { + self.inner + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Take { + fn read(&mut self, buf: &mut [u8]) -> Result { + // Don't call into inner reader at all at EOF because it may still block +@@ -1579,7 +1536,7 @@ impl Read for Take { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Take { + fn fill_buf(&mut self) -> Result<&[u8]> { + // Don't call into inner reader at all at EOF because it may still block +@@ -1618,13 +1575,11 @@ fn read_one_byte(reader: &mut Read) -> Option> { + /// Please see the documentation of [`bytes()`] for more details. + /// + /// [`bytes()`]: trait.Read.html#method.bytes +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Debug)] + pub struct Bytes { + inner: R, + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Iterator for Bytes { + type Item = Result; + +@@ -1639,8 +1594,6 @@ impl Iterator for Bytes { + /// Please see the documentation of `chars()` for more details. + /// + /// [chars]: trait.Read.html#method.chars +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + #[derive(Debug)] + pub struct Chars { + inner: R, +@@ -1649,8 +1602,6 @@ pub struct Chars { + /// An enumeration of possible errors that can be generated from the `Chars` + /// adapter. + #[derive(Debug)] +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + pub enum CharsError { + /// Variant representing that the underlying stream was read successfully + /// but it did not contain valid utf8 data. +@@ -1660,8 +1611,6 @@ pub enum CharsError { + Other(Error), + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl Iterator for Chars { + type Item = result::Result; + +@@ -1693,25 +1642,6 @@ impl Iterator for Chars { + } + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] +-impl std_error::Error for CharsError { +- fn description(&self) -> &str { +- match *self { +- CharsError::NotUtf8 => "invalid utf8 encoding", +- CharsError::Other(ref e) => std_error::Error::description(e), +- } +- } +- fn cause(&self) -> Option<&std_error::Error> { +- match *self { +- CharsError::NotUtf8 => None, +- CharsError::Other(ref e) => e.cause(), +- } +- } +-} +- +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl fmt::Display for CharsError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + match *self { +@@ -1730,14 +1660,14 @@ impl fmt::Display for CharsError { + /// `BufRead`. Please see the documentation of `split()` for more details. + /// + /// [split]: trait.BufRead.html#method.split +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + #[derive(Debug)] + pub struct Split { + buf: B, + delim: u8, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Split { + type Item = Result>; + +@@ -1762,13 +1692,13 @@ impl Iterator for Split { + /// `BufRead`. Please see the documentation of `lines()` for more details. + /// + /// [lines]: trait.BufRead.html#method.lines +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + #[derive(Debug)] + pub struct Lines { + buf: B, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Lines { + type Item = Result; + +diff --git a/prelude.rs b/prelude.rs +index 8772d0f..49d66c9 100644 +--- a/prelude.rs ++++ b/prelude.rs +@@ -18,7 +18,8 @@ + //! use std::io::prelude::*; + //! ``` + +-#![stable(feature = "rust1", since = "1.0.0")] ++pub use super::{Read, Write, Seek}; ++#[cfg(feature="collections")] pub use super::BufRead; + +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use super::{Read, Write, BufRead, Seek}; ++#[cfg(feature="collections")] pub use alloc::boxed::Box; ++#[cfg(feature="collections")] pub use collections::vec::Vec; +diff --git a/util.rs b/util.rs +index 4163187..dd64d72 100644 +--- a/util.rs ++++ b/util.rs +@@ -10,8 +10,9 @@ + + #![allow(missing_copy_implementations)] + +-use fmt; +-use io::{self, Read, Write, ErrorKind, BufRead}; ++use core::fmt; ++use io::{self, Read, Write, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; + + /// Copies the entire contents of a reader into a writer. + /// +@@ -43,7 +44,6 @@ use io::{self, Read, Write, ErrorKind, BufRead}; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn copy(reader: &mut R, writer: &mut W) -> io::Result + where R: Read, W: Write + { +@@ -67,7 +67,6 @@ pub fn copy(reader: &mut R, writer: &mut W) -> io::Result< + /// the documentation of `empty()` for more details. + /// + /// [empty]: fn.empty.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Empty { _priv: () } + + /// Constructs a new handle to an empty reader. +@@ -85,20 +84,18 @@ pub struct Empty { _priv: () } + /// io::empty().read_to_string(&mut buffer).unwrap(); + /// assert!(buffer.is_empty()); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn empty() -> Empty { Empty { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Empty { + fn read(&mut self, _buf: &mut [u8]) -> io::Result { Ok(0) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++ ++#[cfg(feature="collections")] + impl BufRead for Empty { + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(&[]) } + fn consume(&mut self, _n: usize) {} + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Empty { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Empty { .. }") +@@ -111,7 +108,6 @@ impl fmt::Debug for Empty { + /// see the documentation of `repeat()` for more details. + /// + /// [repeat]: fn.repeat.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Repeat { byte: u8 } + + /// Creates an instance of a reader that infinitely repeats one byte. +@@ -128,10 +124,8 @@ pub struct Repeat { byte: u8 } + /// io::repeat(0b101).read_exact(&mut buffer).unwrap(); + /// assert_eq!(buffer, [0b101, 0b101, 0b101]); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn repeat(byte: u8) -> Repeat { Repeat { byte: byte } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Repeat { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + for slot in &mut *buf { +@@ -141,7 +135,6 @@ impl Read for Repeat { + } + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Repeat { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Repeat { .. }") +@@ -154,7 +147,6 @@ impl fmt::Debug for Repeat { + /// see the documentation of `sink()` for more details. + /// + /// [sink]: fn.sink.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Sink { _priv: () } + + /// Creates an instance of a writer which will successfully consume all data. +@@ -171,16 +163,13 @@ pub struct Sink { _priv: () } + /// let num_bytes = io::sink().write(&buffer).unwrap(); + /// assert_eq!(num_bytes, 5); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn sink() -> Sink { Sink { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for Sink { + fn write(&mut self, buf: &[u8]) -> io::Result { Ok(buf.len()) } + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Sink { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Sink { .. }") diff --git a/patches/0ca9967af75f7a279dcf4921f119b2602b41dd71.patch b/patches/0ca9967af75f7a279dcf4921f119b2602b41dd71.patch new file mode 100644 index 0000000..a72989e --- /dev/null +++ b/patches/0ca9967af75f7a279dcf4921f119b2602b41dd71.patch @@ -0,0 +1,1480 @@ +diff --git a/buffered.rs b/buffered.rs +index 44dd4e9..20ab840 100644 +--- a/buffered.rs ++++ b/buffered.rs +@@ -10,13 +10,13 @@ + + //! Buffering wrappers for I/O traits + ++use core::prelude::v1::*; + use io::prelude::*; + +-use cmp; +-use error; +-use fmt; ++use core::cmp; ++use core::fmt; + use io::{self, DEFAULT_BUF_SIZE, Error, ErrorKind, SeekFrom}; +-use memchr; ++use io::memchr; + + /// The `BufReader` struct adds buffering to any reader. + /// +@@ -46,7 +46,6 @@ use memchr; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufReader { + inner: R, + buf: Box<[u8]>, +@@ -69,7 +68,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: R) -> BufReader { + BufReader::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -90,7 +88,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: R) -> BufReader { + BufReader { + inner: inner, +@@ -118,7 +115,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &R { &self.inner } + + /// Gets a mutable reference to the underlying reader. +@@ -139,7 +135,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut R { &mut self.inner } + + /// Unwraps this `BufReader`, returning the underlying reader. +@@ -160,11 +155,9 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> R { self.inner } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for BufReader { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + // If we don't have any buffered data and we're doing a massive read +@@ -182,7 +175,6 @@ impl Read for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl BufRead for BufReader { + fn fill_buf(&mut self) -> io::Result<&[u8]> { + // If we've reached the end of our internal buffer then we need to fetch +@@ -199,7 +191,6 @@ impl BufRead for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufReader where R: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufReader") +@@ -209,7 +200,6 @@ impl fmt::Debug for BufReader where R: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufReader { + /// Seek to an offset, in bytes, in the underlying reader. + /// +@@ -302,7 +292,6 @@ impl Seek for BufReader { + /// [`Write`]: ../../std/io/trait.Write.html + /// [`write`]: ../../std/net/struct.TcpStream.html#method.write + /// [`TcpStream`]: ../../std/net/struct.TcpStream.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufWriter { + inner: Option, + buf: Vec, +@@ -337,7 +326,6 @@ pub struct BufWriter { + /// }; + /// ``` + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct IntoInnerError(W, Error); + + impl BufWriter { +@@ -351,7 +339,6 @@ impl BufWriter { + /// + /// let mut buffer = BufWriter::new(TcpStream::connect("127.0.0.1:34254").unwrap()); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> BufWriter { + BufWriter::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -369,7 +356,6 @@ impl BufWriter { + /// let stream = TcpStream::connect("127.0.0.1:34254").unwrap(); + /// let mut buffer = BufWriter::with_capacity(100, stream); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> BufWriter { + BufWriter { + inner: Some(inner), +@@ -418,7 +404,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.as_ref().unwrap() } + + /// Gets a mutable reference to the underlying writer. +@@ -436,7 +421,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.as_mut().unwrap() } + + /// Unwraps this `BufWriter`, returning the underlying writer. +@@ -454,7 +438,6 @@ impl BufWriter { + /// // unwrap the TcpStream and flush the buffer + /// let stream = buffer.into_inner().unwrap(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(mut self) -> Result>> { + match self.flush_buf() { + Err(e) => Err(IntoInnerError(self, e)), +@@ -463,7 +446,6 @@ impl BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for BufWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.buf.len() + buf.len() > self.buf.capacity() { +@@ -483,7 +465,6 @@ impl Write for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufWriter") +@@ -493,7 +474,6 @@ impl fmt::Debug for BufWriter where W: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufWriter { + /// Seek to the offset, in bytes, in the underlying writer. + /// +@@ -503,7 +483,6 @@ impl Seek for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Drop for BufWriter { + fn drop(&mut self) { + if self.inner.is_some() && !self.panicked { +@@ -542,7 +521,6 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn error(&self) -> &Error { &self.1 } + + /// Returns the buffered writer instance which generated the error. +@@ -575,23 +553,13 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> W { self.0 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl From> for Error { + fn from(iie: IntoInnerError) -> Error { iie.1 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for IntoInnerError { +- fn description(&self) -> &str { +- error::Error::description(self.error()) +- } +-} +- +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for IntoInnerError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.error().fmt(f) +@@ -646,7 +614,6 @@ impl fmt::Display for IntoInnerError { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct LineWriter { + inner: BufWriter, + } +@@ -666,7 +633,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> LineWriter { + // Lines typically aren't that long, don't use a giant buffer + LineWriter::with_capacity(1024, inner) +@@ -687,7 +653,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> LineWriter { + LineWriter { inner: BufWriter::with_capacity(cap, inner) } + } +@@ -708,7 +673,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.get_ref() } + + /// Gets a mutable reference to the underlying writer. +@@ -731,7 +695,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.get_mut() } + + /// Unwraps this `LineWriter`, returning the underlying writer. +@@ -753,7 +716,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> Result>> { + self.inner.into_inner().map_err(|IntoInnerError(buf, e)| { + IntoInnerError(LineWriter { inner: buf }, e) +@@ -761,7 +723,6 @@ impl LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for LineWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + match memchr::memrchr(b'\n', buf) { +@@ -780,7 +741,6 @@ impl Write for LineWriter { + fn flush(&mut self) -> io::Result<()> { self.inner.flush() } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for LineWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("LineWriter") +diff --git a/cursor.rs b/cursor.rs +index 1b50233..6a7b44f 100644 +--- a/cursor.rs ++++ b/cursor.rs +@@ -8,10 +8,11 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + ++use core::prelude::v1::*; + use io::prelude::*; + +-use core::convert::TryInto; +-use cmp; ++#[cfg(feature = "collections")] use core::convert::TryInto; ++use core::cmp; + use io::{self, SeekFrom, Error, ErrorKind}; + + /// A `Cursor` wraps another type and provides it with a +@@ -79,7 +80,6 @@ use io::{self, SeekFrom, Error, ErrorKind}; + /// assert_eq!(&buff.get_ref()[5..15], &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]); + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Clone, Debug)] + pub struct Cursor { + inner: T, +@@ -98,7 +98,6 @@ impl Cursor { + /// # fn force_inference(_: &Cursor>) {} + /// # force_inference(&buff); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: T) -> Cursor { + Cursor { pos: 0, inner: inner } + } +@@ -116,7 +115,6 @@ impl Cursor { + /// + /// let vec = buff.into_inner(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> T { self.inner } + + /// Gets a reference to the underlying value in this cursor. +@@ -132,7 +130,6 @@ impl Cursor { + /// + /// let reference = buff.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &T { &self.inner } + + /// Gets a mutable reference to the underlying value in this cursor. +@@ -151,7 +148,6 @@ impl Cursor { + /// + /// let reference = buff.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut T { &mut self.inner } + + /// Returns the current position of this cursor. +@@ -173,7 +169,6 @@ impl Cursor { + /// buff.seek(SeekFrom::Current(-1)).unwrap(); + /// assert_eq!(buff.position(), 1); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn position(&self) -> u64 { self.pos } + + /// Sets the position of this cursor. +@@ -193,11 +188,9 @@ impl Cursor { + /// buff.set_position(4); + /// assert_eq!(buff.position(), 4); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn set_position(&mut self, pos: u64) { self.pos = pos; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl io::Seek for Cursor where T: AsRef<[u8]> { + fn seek(&mut self, style: SeekFrom) -> io::Result { + let pos = match style { +@@ -216,25 +209,27 @@ impl io::Seek for Cursor where T: AsRef<[u8]> { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Cursor where T: AsRef<[u8]> { + fn read(&mut self, buf: &mut [u8]) -> io::Result { +- let n = Read::read(&mut self.fill_buf()?, buf)?; ++ let n = Read::read(&mut self.get_buf()?, buf)?; + self.pos += n as u64; + Ok(n) + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl BufRead for Cursor where T: AsRef<[u8]> { +- fn fill_buf(&mut self) -> io::Result<&[u8]> { ++impl Cursor where T: AsRef<[u8]> { ++ fn get_buf(&mut self) -> io::Result<&[u8]> { + let amt = cmp::min(self.pos, self.inner.as_ref().len() as u64); + Ok(&self.inner.as_ref()[(amt as usize)..]) + } ++} ++ ++#[cfg(feature = "collections")] ++impl BufRead for Cursor where T: AsRef<[u8]> { ++ fn fill_buf(&mut self) -> io::Result<&[u8]> { self.get_buf() } + fn consume(&mut self, amt: usize) { self.pos += amt as u64; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for Cursor<&'a mut [u8]> { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -246,7 +241,7 @@ impl<'a> Write for Cursor<&'a mut [u8]> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature = "collections")] + impl Write for Cursor> { + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos: usize = self.position().try_into().map_err(|_| { +@@ -276,8 +271,8 @@ impl Write for Cursor> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "cursor_box_slice", since = "1.5.0")] +-impl Write for Cursor> { ++#[cfg(feature = "alloc")] ++impl Write for Cursor<::alloc::boxed::Box<[u8]>> { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos = cmp::min(self.pos, self.inner.len() as u64); +diff --git a/error.rs b/error.rs +index ddf0030..748b830 100644 +--- a/error.rs ++++ b/error.rs +@@ -8,10 +8,15 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use error; +-use fmt; +-use result; +-use sys; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++#[cfg(not(feature="alloc"))] use ::FakeBox as Box; ++use core::convert::Into; ++use core::fmt; ++use core::marker::{Send, Sync}; ++use core::option::Option::{self, Some, None}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(not(feature="collections"))] use ::ErrorString as String; + + /// A specialized [`Result`](../result/enum.Result.html) type for I/O + /// operations. +@@ -43,7 +48,6 @@ use sys; + /// Ok(buffer) + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub type Result = result::Result; + + /// The error type for I/O operations of the `Read`, `Write`, `Seek`, and +@@ -55,20 +59,22 @@ pub type Result = result::Result; + /// + /// [`ErrorKind`]: enum.ErrorKind.html + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Error { + repr: Repr, + } + + enum Repr { + Os(i32), ++ #[cfg(feature="alloc")] + Custom(Box), ++ #[cfg(not(feature="alloc"))] ++ Custom(Custom), + } + + #[derive(Debug)] + struct Custom { + kind: ErrorKind, +- error: Box, ++ error: String, + } + + /// A list specifying general categories of I/O error. +@@ -80,47 +86,34 @@ struct Custom { + /// + /// [`io::Error`]: struct.Error.html + #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)] +-#[stable(feature = "rust1", since = "1.0.0")] + #[allow(deprecated)] + pub enum ErrorKind { + /// An entity was not found, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + NotFound, + /// The operation lacked the necessary privileges to complete. +- #[stable(feature = "rust1", since = "1.0.0")] + PermissionDenied, + /// The connection was refused by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionRefused, + /// The connection was reset by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionReset, + /// The connection was aborted (terminated) by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionAborted, + /// The network operation failed because it was not connected yet. +- #[stable(feature = "rust1", since = "1.0.0")] + NotConnected, + /// A socket address could not be bound because the address is already in + /// use elsewhere. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrInUse, + /// A nonexistent interface was requested or the requested address was not + /// local. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrNotAvailable, + /// The operation failed because a pipe was closed. +- #[stable(feature = "rust1", since = "1.0.0")] + BrokenPipe, + /// An entity already exists, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + AlreadyExists, + /// The operation needs to block to complete, but the blocking operation was + /// requested to not occur. +- #[stable(feature = "rust1", since = "1.0.0")] + WouldBlock, + /// A parameter was incorrect. +- #[stable(feature = "rust1", since = "1.0.0")] + InvalidInput, + /// Data not valid for the operation were encountered. + /// +@@ -130,10 +123,8 @@ pub enum ErrorKind { + /// + /// For example, a function that reads a file into a string will error with + /// `InvalidData` if the file's contents are not valid UTF-8. +- #[stable(feature = "io_invalid_data", since = "1.2.0")] + InvalidData, + /// The I/O operation's timeout expired, causing it to be canceled. +- #[stable(feature = "rust1", since = "1.0.0")] + TimedOut, + /// An error returned when an operation could not be completed because a + /// call to `write` returned `Ok(0)`. +@@ -141,15 +132,12 @@ pub enum ErrorKind { + /// This typically means that an operation could only succeed if it wrote a + /// particular number of bytes but only a smaller number of bytes could be + /// written. +- #[stable(feature = "rust1", since = "1.0.0")] + WriteZero, + /// This operation was interrupted. + /// + /// Interrupted operations can typically be retried. +- #[stable(feature = "rust1", since = "1.0.0")] + Interrupted, + /// Any I/O error not part of this list. +- #[stable(feature = "rust1", since = "1.0.0")] + Other, + + /// An error returned when an operation could not be completed because an +@@ -158,15 +146,10 @@ pub enum ErrorKind { + /// This typically means that an operation could only succeed if it read a + /// particular number of bytes but only a smaller number of bytes could be + /// read. +- #[stable(feature = "read_exact", since = "1.6.0")] + UnexpectedEof, + + /// A marker variant that tells the compiler that users of this enum cannot + /// match it exhaustively. +- #[unstable(feature = "io_error_internals", +- reason = "better expressed through extensible enums that this \ +- enum cannot be exhaustively matched against", +- issue = "0")] + #[doc(hidden)] + __Nonexhaustive, + } +@@ -190,14 +173,13 @@ impl Error { + /// // errors can also be created from other errors + /// let custom_error2 = Error::new(ErrorKind::Interrupted, custom_error); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(kind: ErrorKind, error: E) -> Error +- where E: Into> ++ where E: Into + { + Self::_new(kind, error.into()) + } + +- fn _new(kind: ErrorKind, error: Box) -> Error { ++ fn _new(kind: ErrorKind, error: String) -> Error { + Error { + repr: Repr::Custom(Box::new(Custom { + kind: kind, +@@ -206,24 +188,6 @@ impl Error { + } + } + +- /// Returns an error representing the last OS error which occurred. +- /// +- /// This function reads the value of `errno` for the target platform (e.g. +- /// `GetLastError` on Windows) and will return a corresponding instance of +- /// `Error` for the error code. +- /// +- /// # Examples +- /// +- /// ``` +- /// use std::io::Error; +- /// +- /// println!("last OS error: {:?}", Error::last_os_error()); +- /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] +- pub fn last_os_error() -> Error { +- Error::from_raw_os_error(sys::os::errno() as i32) +- } +- + /// Creates a new instance of an `Error` from a particular OS error code. + /// + /// # Examples +@@ -249,7 +213,6 @@ impl Error { + /// assert_eq!(error.kind(), io::ErrorKind::AddrInUse); + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn from_raw_os_error(code: i32) -> Error { + Error { repr: Repr::Os(code) } + } +@@ -280,7 +243,6 @@ impl Error { + /// print_os_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn raw_os_error(&self) -> Option { + match self.repr { + Repr::Os(i) => Some(i), +@@ -313,11 +275,10 @@ impl Error { + /// print_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_ref(&self) -> Option<&(error::Error+Send+Sync+'static)> { ++ pub fn get_ref(&self) -> Option<&String> { + match self.repr { + Repr::Os(..) => None, +- Repr::Custom(ref c) => Some(&*c.error), ++ Repr::Custom(ref c) => Some(&c.error), + } + } + +@@ -383,11 +344,10 @@ impl Error { + /// print_error(&change_error(Error::new(ErrorKind::Other, MyError::new()))); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_mut(&mut self) -> Option<&mut (error::Error+Send+Sync+'static)> { ++ pub fn get_mut(&mut self) -> Option<&mut String> { + match self.repr { + Repr::Os(..) => None, +- Repr::Custom(ref mut c) => Some(&mut *c.error), ++ Repr::Custom(ref mut c) => Some(&mut c.error), + } + } + +@@ -416,8 +376,7 @@ impl Error { + /// print_error(Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn into_inner(self) -> Option> { ++ pub fn into_inner(self) -> Option { + match self.repr { + Repr::Os(..) => None, + Repr::Custom(c) => Some(c.error) +@@ -442,10 +401,9 @@ impl Error { + /// print_error(Error::new(ErrorKind::AddrInUse, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn kind(&self) -> ErrorKind { + match self.repr { +- Repr::Os(code) => sys::decode_error_kind(code), ++ Repr::Os(_code) => ErrorKind::Other, + Repr::Custom(ref c) => c.kind, + } + } +@@ -455,63 +413,23 @@ impl fmt::Debug for Repr { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match *self { + Repr::Os(ref code) => +- fmt.debug_struct("Os").field("code", code) +- .field("message", &sys::os::error_string(*code)).finish(), ++ fmt.debug_struct("Os").field("code", code).finish(), + Repr::Custom(ref c) => fmt.debug_tuple("Custom").field(c).finish(), + } + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for Error { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match self.repr { + Repr::Os(code) => { +- let detail = sys::os::error_string(code); +- write!(fmt, "{} (os error {})", detail, code) ++ write!(fmt, "os error {}", code) + } + Repr::Custom(ref c) => c.error.fmt(fmt), + } + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for Error { +- fn description(&self) -> &str { +- match self.repr { +- Repr::Os(..) => match self.kind() { +- ErrorKind::NotFound => "entity not found", +- ErrorKind::PermissionDenied => "permission denied", +- ErrorKind::ConnectionRefused => "connection refused", +- ErrorKind::ConnectionReset => "connection reset", +- ErrorKind::ConnectionAborted => "connection aborted", +- ErrorKind::NotConnected => "not connected", +- ErrorKind::AddrInUse => "address in use", +- ErrorKind::AddrNotAvailable => "address not available", +- ErrorKind::BrokenPipe => "broken pipe", +- ErrorKind::AlreadyExists => "entity already exists", +- ErrorKind::WouldBlock => "operation would block", +- ErrorKind::InvalidInput => "invalid input parameter", +- ErrorKind::InvalidData => "invalid data", +- ErrorKind::TimedOut => "timed out", +- ErrorKind::WriteZero => "write zero", +- ErrorKind::Interrupted => "operation interrupted", +- ErrorKind::Other => "other os error", +- ErrorKind::UnexpectedEof => "unexpected end of file", +- ErrorKind::__Nonexhaustive => unreachable!() +- }, +- Repr::Custom(ref c) => c.error.description(), +- } +- } +- +- fn cause(&self) -> Option<&error::Error> { +- match self.repr { +- Repr::Os(..) => None, +- Repr::Custom(ref c) => c.error.cause(), +- } +- } +-} +- + fn _assert_error_is_sync_send() { + fn _is_sync_send() {} + _is_sync_send::(); +diff --git a/impls.rs b/impls.rs +index 6b26c01..0ba399b 100644 +--- a/impls.rs ++++ b/impls.rs +@@ -8,26 +8,31 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use cmp; +-use io::{self, SeekFrom, Read, Write, Seek, BufRead, Error, ErrorKind}; +-use fmt; +-use mem; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++use core::cmp; ++use io::{self, SeekFrom, Read, Write, Seek, Error, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; ++use core::fmt; ++use core::mem; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(feature="collections")] use collections::vec::Vec; + + // ============================================================================= + // Forwarding implementations + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, R: Read + ?Sized> Read for &'a mut R { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -38,7 +43,6 @@ impl<'a, R: Read + ?Sized> Read for &'a mut R { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, W: Write + ?Sized> Write for &'a mut W { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -56,12 +60,11 @@ impl<'a, W: Write + ?Sized> Write for &'a mut W { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, S: Seek + ?Sized> Seek for &'a mut S { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -80,18 +83,20 @@ impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Read for Box { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -102,7 +107,7 @@ impl Read for Box { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Write for Box { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -120,12 +125,12 @@ impl Write for Box { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Seek for Box { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Box { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -151,7 +156,6 @@ impl BufRead for Box { + /// + /// Note that reading updates the slice to point to the yet unread part. + /// The slice will be empty when EOF is reached. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Read for &'a [u8] { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { +@@ -175,7 +179,7 @@ impl<'a> Read for &'a [u8] { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a> BufRead for &'a [u8] { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(*self) } +@@ -189,7 +193,6 @@ impl<'a> BufRead for &'a [u8] { + /// + /// Note that writing updates the slice to point to the yet unwritten part. + /// The slice will be empty when it has been completely overwritten. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for &'a mut [u8] { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -215,7 +218,7 @@ impl<'a> Write for &'a mut [u8] { + + /// Write is implemented for `Vec` by appending to the vector. + /// The vector will grow as needed. +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Write for Vec { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { +diff --git a/memchr.rs b/memchr.rs +index 3824a5f..312cf47 100644 +--- a/memchr.rs ++++ b/memchr.rs +@@ -11,10 +11,12 @@ + // Original implementation taken from rust-memchr + // Copyright 2015 Andrew Gallant, bluss and Nicolas Koch + ++pub use self::fallback::{memchr,memrchr}; ++ + #[allow(dead_code)] + pub mod fallback { +- use cmp; +- use mem; ++ use core::cmp; ++ use core::mem; + + const LO_U64: u64 = 0x0101010101010101; + const HI_U64: u64 = 0x8080808080808080; +diff --git a/mod.rs b/mod.rs +index 193f396..7232bd1 100644 +--- a/mod.rs ++++ b/mod.rs +@@ -252,44 +252,34 @@ + //! [`io::Result`]: type.Result.html + //! [`try!`]: ../macro.try.html + +-#![stable(feature = "rust1", since = "1.0.0")] +- +-use cmp; ++use core::cmp; + use rustc_unicode::str as core_str; +-use error as std_error; +-use fmt; +-use result; +-use str; +-use memchr; +- +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::{BufReader, BufWriter, LineWriter}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::IntoInnerError; +-#[stable(feature = "rust1", since = "1.0.0")] ++use core::fmt; ++use core::iter::{Iterator}; ++use core::marker::Sized; ++#[cfg(feature="collections")] use core::ops::{Drop, FnOnce}; ++use core::option::Option::{self, Some, None}; ++use core::result::Result::{Ok, Err}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++use core::str; ++#[cfg(feature="collections")] use collections::vec::Vec; ++mod memchr; ++ ++#[cfg(feature="collections")] pub use self::buffered::{BufReader, BufWriter, LineWriter}; ++#[cfg(feature="collections")] pub use self::buffered::IntoInnerError; + pub use self::cursor::Cursor; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::error::{Result, Error, ErrorKind}; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::util::{copy, sink, Sink, empty, Empty, repeat, Repeat}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{stdin, stdout, stderr, _print, Stdin, Stdout, Stderr}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{StdoutLock, StderrLock, StdinLock}; +-#[unstable(feature = "libstd_io_internals", issue = "0")] +-#[doc(no_inline, hidden)] +-pub use self::stdio::{set_panic, set_print}; + + pub mod prelude; +-mod buffered; ++#[cfg(feature="collections")] mod buffered; + mod cursor; + mod error; + mod impls; +-mod lazy; + mod util; +-mod stdio; + +-const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; ++const DEFAULT_BUF_SIZE: usize = 8 * 1024; + + // A few methods below (read_to_string, read_line) will append data into a + // `String` buffer, but we need to be pretty careful when doing this. The +@@ -309,6 +299,7 @@ const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; + // 2. We're passing a raw buffer to the function `f`, and it is expected that + // the function only *appends* bytes to the buffer. We'll get undefined + // behavior if existing bytes are overwritten to have non-UTF-8 data. ++#[cfg(feature="collections")] + fn append_to_string(buf: &mut String, f: F) -> Result + where F: FnOnce(&mut Vec) -> Result + { +@@ -340,6 +331,7 @@ fn append_to_string(buf: &mut String, f: F) -> Result + // of data to return. Simply tacking on an extra DEFAULT_BUF_SIZE space every + // time is 4,500 times (!) slower than this if the reader has a very small + // amount of data to return. ++#[cfg(feature="collections")] + fn read_to_end(r: &mut R, buf: &mut Vec) -> Result { + let start_len = buf.len(); + let mut len = start_len; +@@ -422,7 +414,6 @@ fn read_to_end(r: &mut R, buf: &mut Vec) -> Result + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Read { + /// Pull some bytes from this source into the specified buffer, returning + /// how many bytes were read. +@@ -472,7 +463,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read(&mut self, buf: &mut [u8]) -> Result; + + /// Read all bytes until EOF in this source, placing them into `buf`. +@@ -514,7 +504,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_end(&mut self, buf: &mut Vec) -> Result { + read_to_end(self, buf) + } +@@ -552,7 +542,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_string(&mut self, buf: &mut String) -> Result { + // Note that we do *not* call `.read_to_end()` here. We are passing + // `&mut Vec` (the raw contents of `buf`) into the `read_to_end` +@@ -613,7 +603,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "read_exact", since = "1.6.0")] + fn read_exact(&mut self, mut buf: &mut [u8]) -> Result<()> { + while !buf.is_empty() { + match self.read(buf) { +@@ -665,7 +654,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + + /// Transforms this `Read` instance to an `Iterator` over its bytes. +@@ -695,7 +683,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn bytes(self) -> Bytes where Self: Sized { + Bytes { inner: self } + } +@@ -732,10 +719,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[unstable(feature = "io", reason = "the semantics of a partial read/write \ +- of where errors happen is currently \ +- unclear and may change", +- issue = "27802")] + fn chars(self) -> Chars where Self: Sized { + Chars { inner: self } + } +@@ -770,7 +753,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn chain(self, next: R) -> Chain where Self: Sized { + Chain { first: self, second: next, done_first: false } + } +@@ -804,7 +786,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn take(self, limit: u64) -> Take where Self: Sized { + Take { inner: self, limit: limit } + } +@@ -840,7 +821,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Write { + /// Write a buffer into this object, returning how many bytes were written. + /// +@@ -880,7 +860,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write(&mut self, buf: &[u8]) -> Result; + + /// Flush this output stream, ensuring that all intermediately buffered +@@ -906,7 +885,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn flush(&mut self) -> Result<()>; + + /// Attempts to write an entire buffer into this write. +@@ -933,7 +911,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_all(&mut self, mut buf: &[u8]) -> Result<()> { + while !buf.is_empty() { + match self.write(buf) { +@@ -985,7 +962,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_fmt(&mut self, fmt: fmt::Arguments) -> Result<()> { + // Create a shim which translates a Write to a fmt::Write and saves + // off I/O errors. instead of discarding them +@@ -1041,7 +1017,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + } + +@@ -1071,7 +1046,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Seek { + /// Seek to an offset, in bytes, in a stream. + /// +@@ -1087,7 +1061,6 @@ pub trait Seek { + /// Seeking to a negative offset is considered an error. + /// + /// [`SeekFrom::Start`]: enum.SeekFrom.html#variant.Start +- #[stable(feature = "rust1", since = "1.0.0")] + fn seek(&mut self, pos: SeekFrom) -> Result; + } + +@@ -1097,29 +1070,26 @@ pub trait Seek { + /// + /// [`Seek`]: trait.Seek.html + #[derive(Copy, PartialEq, Eq, Clone, Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub enum SeekFrom { + /// Set the offset to the provided number of bytes. +- #[stable(feature = "rust1", since = "1.0.0")] +- Start(#[stable(feature = "rust1", since = "1.0.0")] u64), ++ Start(u64), + + /// Set the offset to the size of this object plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- End(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ End(i64), + + /// Set the offset to the current position plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- Current(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ Current(i64), + } + ++#[cfg(feature="collections")] + fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + -> Result { + let mut read = 0; +@@ -1199,7 +1169,7 @@ fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + /// # } + /// ``` + /// +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub trait BufRead: Read { + /// Fills the internal buffer of this object, returning the buffer contents. + /// +@@ -1244,7 +1214,6 @@ pub trait BufRead: Read { + /// // ensure the bytes we worked with aren't returned again later + /// stdin.consume(length); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn fill_buf(&mut self) -> Result<&[u8]>; + + /// Tells this buffer that `amt` bytes have been consumed from the buffer, +@@ -1266,7 +1235,6 @@ pub trait BufRead: Read { + /// that method's example includes an example of `consume()`. + /// + /// [`fill_buf()`]: #tymethod.fill_buf +- #[stable(feature = "rust1", since = "1.0.0")] + fn consume(&mut self, amt: usize); + + /// Read all bytes into `buf` until the delimiter `byte` or EOF is reached. +@@ -1308,7 +1276,6 @@ pub trait BufRead: Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_until(&mut self, byte: u8, buf: &mut Vec) -> Result { + read_until(self, byte, buf) + } +@@ -1355,7 +1322,6 @@ pub trait BufRead: Read { + /// buffer.clear(); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_line(&mut self, buf: &mut String) -> Result { + // Note that we are not calling the `.read_until` method here, but + // rather our hardcoded implementation. For more details as to why, see +@@ -1392,7 +1358,6 @@ pub trait BufRead: Read { + /// println!("{:?}", content.unwrap()); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn split(self, byte: u8) -> Split where Self: Sized { + Split { buf: self, delim: byte } + } +@@ -1420,7 +1385,6 @@ pub trait BufRead: Read { + /// println!("{}", line.unwrap()); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn lines(self) -> Lines where Self: Sized { + Lines { buf: self } + } +@@ -1432,14 +1396,12 @@ pub trait BufRead: Read { + /// Please see the documentation of [`chain()`] for more details. + /// + /// [`chain()`]: trait.Read.html#method.chain +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Chain { + first: T, + second: U, + done_first: bool, + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Chain { + fn read(&mut self, buf: &mut [u8]) -> Result { + if !self.done_first { +@@ -1452,7 +1414,7 @@ impl Read for Chain { + } + } + +-#[stable(feature = "chain_bufread", since = "1.9.0")] ++#[cfg(feature="collections")] + impl BufRead for Chain { + fn fill_buf(&mut self) -> Result<&[u8]> { + if !self.done_first { +@@ -1479,7 +1441,6 @@ impl BufRead for Chain { + /// Please see the documentation of `take()` for more details. + /// + /// [take]: trait.Read.html#method.take +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Take { + inner: T, + limit: u64, +@@ -1511,7 +1472,6 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn limit(&self) -> u64 { self.limit } + + /// Consumes the `Take`, returning the wrapped reader. +@@ -1536,13 +1496,11 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[unstable(feature = "io_take_into_inner", issue = "23755")] + pub fn into_inner(self) -> T { + self.inner + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Take { + fn read(&mut self, buf: &mut [u8]) -> Result { + // Don't call into inner reader at all at EOF because it may still block +@@ -1557,7 +1515,7 @@ impl Read for Take { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Take { + fn fill_buf(&mut self) -> Result<&[u8]> { + // Don't call into inner reader at all at EOF because it may still block +@@ -1596,12 +1554,10 @@ fn read_one_byte(reader: &mut Read) -> Option> { + /// Please see the documentation of [`bytes()`] for more details. + /// + /// [`bytes()`]: trait.Read.html#method.bytes +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Bytes { + inner: R, + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Iterator for Bytes { + type Item = Result; + +@@ -1616,8 +1572,6 @@ impl Iterator for Bytes { + /// Please see the documentation of `chars()` for more details. + /// + /// [chars]: trait.Read.html#method.chars +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + pub struct Chars { + inner: R, + } +@@ -1625,8 +1579,6 @@ pub struct Chars { + /// An enumeration of possible errors that can be generated from the `Chars` + /// adapter. + #[derive(Debug)] +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + pub enum CharsError { + /// Variant representing that the underlying stream was read successfully + /// but it did not contain valid utf8 data. +@@ -1636,8 +1588,6 @@ pub enum CharsError { + Other(Error), + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl Iterator for Chars { + type Item = result::Result; + +@@ -1669,25 +1619,6 @@ impl Iterator for Chars { + } + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] +-impl std_error::Error for CharsError { +- fn description(&self) -> &str { +- match *self { +- CharsError::NotUtf8 => "invalid utf8 encoding", +- CharsError::Other(ref e) => std_error::Error::description(e), +- } +- } +- fn cause(&self) -> Option<&std_error::Error> { +- match *self { +- CharsError::NotUtf8 => None, +- CharsError::Other(ref e) => e.cause(), +- } +- } +-} +- +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl fmt::Display for CharsError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + match *self { +@@ -1706,13 +1637,13 @@ impl fmt::Display for CharsError { + /// `BufRead`. Please see the documentation of `split()` for more details. + /// + /// [split]: trait.BufRead.html#method.split +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub struct Split { + buf: B, + delim: u8, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Split { + type Item = Result>; + +@@ -1737,12 +1668,12 @@ impl Iterator for Split { + /// `BufRead`. Please see the documentation of `lines()` for more details. + /// + /// [lines]: trait.BufRead.html#method.lines +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub struct Lines { + buf: B, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Lines { + type Item = Result; + +diff --git a/prelude.rs b/prelude.rs +index 8772d0f..49d66c9 100644 +--- a/prelude.rs ++++ b/prelude.rs +@@ -18,7 +18,8 @@ + //! use std::io::prelude::*; + //! ``` + +-#![stable(feature = "rust1", since = "1.0.0")] ++pub use super::{Read, Write, Seek}; ++#[cfg(feature="collections")] pub use super::BufRead; + +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use super::{Read, Write, BufRead, Seek}; ++#[cfg(feature="collections")] pub use alloc::boxed::Box; ++#[cfg(feature="collections")] pub use collections::vec::Vec; +diff --git a/util.rs b/util.rs +index 2c68802..93bcfc3 100644 +--- a/util.rs ++++ b/util.rs +@@ -10,7 +10,8 @@ + + #![allow(missing_copy_implementations)] + +-use io::{self, Read, Write, ErrorKind, BufRead}; ++use io::{self, Read, Write, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; + + /// Copies the entire contents of a reader into a writer. + /// +@@ -42,7 +43,6 @@ use io::{self, Read, Write, ErrorKind, BufRead}; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn copy(reader: &mut R, writer: &mut W) -> io::Result + where R: Read, W: Write + { +@@ -66,7 +66,6 @@ pub fn copy(reader: &mut R, writer: &mut W) -> io::Result< + /// the documentation of `empty()` for more details. + /// + /// [empty]: fn.empty.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Empty { _priv: () } + + /// Constructs a new handle to an empty reader. +@@ -84,14 +83,12 @@ pub struct Empty { _priv: () } + /// io::empty().read_to_string(&mut buffer).unwrap(); + /// assert!(buffer.is_empty()); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn empty() -> Empty { Empty { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Empty { + fn read(&mut self, _buf: &mut [u8]) -> io::Result { Ok(0) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Empty { + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(&[]) } + fn consume(&mut self, _n: usize) {} +@@ -103,7 +100,6 @@ impl BufRead for Empty { + /// see the documentation of `repeat()` for more details. + /// + /// [repeat]: fn.repeat.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Repeat { byte: u8 } + + /// Creates an instance of a reader that infinitely repeats one byte. +@@ -120,10 +116,8 @@ pub struct Repeat { byte: u8 } + /// io::repeat(0b101).read_exact(&mut buffer).unwrap(); + /// assert_eq!(buffer, [0b101, 0b101, 0b101]); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn repeat(byte: u8) -> Repeat { Repeat { byte: byte } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Repeat { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + for slot in &mut *buf { +@@ -139,7 +133,6 @@ impl Read for Repeat { + /// see the documentation of `sink()` for more details. + /// + /// [sink]: fn.sink.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Sink { _priv: () } + + /// Creates an instance of a writer which will successfully consume all data. +@@ -156,10 +149,8 @@ pub struct Sink { _priv: () } + /// let num_bytes = io::sink().write(&buffer).unwrap(); + /// assert_eq!(num_bytes, 5); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn sink() -> Sink { Sink { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for Sink { + fn write(&mut self, buf: &[u8]) -> io::Result { Ok(buf.len()) } + fn flush(&mut self) -> io::Result<()> { Ok(()) } diff --git a/patches/19724d34d2b223f940363cc07aa83a8a530f8093.patch b/patches/19724d34d2b223f940363cc07aa83a8a530f8093.patch new file mode 100644 index 0000000..bc0ca0e --- /dev/null +++ b/patches/19724d34d2b223f940363cc07aa83a8a530f8093.patch @@ -0,0 +1,1509 @@ +diff --git a/buffered.rs b/buffered.rs +index f98a3a8..1601229 100644 +--- a/buffered.rs ++++ b/buffered.rs +@@ -10,13 +10,13 @@ + + //! Buffering wrappers for I/O traits + ++use core::prelude::v1::*; + use io::prelude::*; + +-use cmp; +-use error; +-use fmt; ++use core::cmp; ++use core::fmt; + use io::{self, DEFAULT_BUF_SIZE, Error, ErrorKind, SeekFrom}; +-use memchr; ++use io::memchr; + + /// The `BufReader` struct adds buffering to any reader. + /// +@@ -46,7 +46,6 @@ use memchr; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufReader { + inner: R, + buf: Box<[u8]>, +@@ -69,7 +68,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: R) -> BufReader { + BufReader::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -90,7 +88,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: R) -> BufReader { + BufReader { + inner: inner, +@@ -118,7 +115,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &R { &self.inner } + + /// Gets a mutable reference to the underlying reader. +@@ -139,7 +135,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut R { &mut self.inner } + + /// Unwraps this `BufReader`, returning the underlying reader. +@@ -160,11 +155,9 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> R { self.inner } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for BufReader { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + // If we don't have any buffered data and we're doing a massive read +@@ -182,7 +175,6 @@ impl Read for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl BufRead for BufReader { + fn fill_buf(&mut self) -> io::Result<&[u8]> { + // If we've reached the end of our internal buffer then we need to fetch +@@ -202,7 +194,6 @@ impl BufRead for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufReader where R: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufReader") +@@ -212,7 +203,6 @@ impl fmt::Debug for BufReader where R: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufReader { + /// Seek to an offset, in bytes, in the underlying reader. + /// +@@ -305,7 +295,6 @@ impl Seek for BufReader { + /// [`Write`]: ../../std/io/trait.Write.html + /// [`write`]: ../../std/net/struct.TcpStream.html#method.write + /// [`TcpStream`]: ../../std/net/struct.TcpStream.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufWriter { + inner: Option, + buf: Vec, +@@ -340,7 +329,6 @@ pub struct BufWriter { + /// }; + /// ``` + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct IntoInnerError(W, Error); + + impl BufWriter { +@@ -354,7 +342,6 @@ impl BufWriter { + /// + /// let mut buffer = BufWriter::new(TcpStream::connect("127.0.0.1:34254").unwrap()); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> BufWriter { + BufWriter::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -372,7 +359,6 @@ impl BufWriter { + /// let stream = TcpStream::connect("127.0.0.1:34254").unwrap(); + /// let mut buffer = BufWriter::with_capacity(100, stream); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> BufWriter { + BufWriter { + inner: Some(inner), +@@ -421,7 +407,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.as_ref().unwrap() } + + /// Gets a mutable reference to the underlying writer. +@@ -439,7 +424,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.as_mut().unwrap() } + + /// Unwraps this `BufWriter`, returning the underlying writer. +@@ -457,7 +441,6 @@ impl BufWriter { + /// // unwrap the TcpStream and flush the buffer + /// let stream = buffer.into_inner().unwrap(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(mut self) -> Result>> { + match self.flush_buf() { + Err(e) => Err(IntoInnerError(self, e)), +@@ -466,7 +449,6 @@ impl BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for BufWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.buf.len() + buf.len() > self.buf.capacity() { +@@ -486,7 +468,6 @@ impl Write for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufWriter") +@@ -496,7 +477,6 @@ impl fmt::Debug for BufWriter where W: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufWriter { + /// Seek to the offset, in bytes, in the underlying writer. + /// +@@ -506,7 +486,6 @@ impl Seek for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Drop for BufWriter { + fn drop(&mut self) { + if self.inner.is_some() && !self.panicked { +@@ -545,7 +524,6 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn error(&self) -> &Error { &self.1 } + + /// Returns the buffered writer instance which generated the error. +@@ -578,23 +556,13 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> W { self.0 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl From> for Error { + fn from(iie: IntoInnerError) -> Error { iie.1 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for IntoInnerError { +- fn description(&self) -> &str { +- error::Error::description(self.error()) +- } +-} +- +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for IntoInnerError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.error().fmt(f) +@@ -649,7 +617,6 @@ impl fmt::Display for IntoInnerError { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct LineWriter { + inner: BufWriter, + need_flush: bool, +@@ -670,7 +637,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> LineWriter { + // Lines typically aren't that long, don't use a giant buffer + LineWriter::with_capacity(1024, inner) +@@ -691,7 +657,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> LineWriter { + LineWriter { + inner: BufWriter::with_capacity(cap, inner), +@@ -715,7 +680,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.get_ref() } + + /// Gets a mutable reference to the underlying writer. +@@ -738,7 +702,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.get_mut() } + + /// Unwraps this `LineWriter`, returning the underlying writer. +@@ -760,7 +723,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> Result>> { + self.inner.into_inner().map_err(|IntoInnerError(buf, e)| { + IntoInnerError(LineWriter { +@@ -771,7 +733,6 @@ impl LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for LineWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.need_flush { +@@ -816,7 +777,6 @@ impl Write for LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for LineWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("LineWriter") +diff --git a/cursor.rs b/cursor.rs +index 0cff866..a674899 100644 +--- a/cursor.rs ++++ b/cursor.rs +@@ -8,10 +8,11 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + ++use core::prelude::v1::*; + use io::prelude::*; + +-use core::convert::TryInto; +-use cmp; ++#[cfg(feature = "collections")] use core::convert::TryInto; ++use core::cmp; + use io::{self, SeekFrom, Error, ErrorKind}; + + /// A `Cursor` wraps another type and provides it with a +@@ -79,7 +80,6 @@ use io::{self, SeekFrom, Error, ErrorKind}; + /// assert_eq!(&buff.get_ref()[5..15], &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]); + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Clone, Debug)] + pub struct Cursor { + inner: T, +@@ -98,7 +98,6 @@ impl Cursor { + /// # fn force_inference(_: &Cursor>) {} + /// # force_inference(&buff); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: T) -> Cursor { + Cursor { pos: 0, inner: inner } + } +@@ -116,7 +115,6 @@ impl Cursor { + /// + /// let vec = buff.into_inner(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> T { self.inner } + + /// Gets a reference to the underlying value in this cursor. +@@ -132,7 +130,6 @@ impl Cursor { + /// + /// let reference = buff.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &T { &self.inner } + + /// Gets a mutable reference to the underlying value in this cursor. +@@ -151,7 +148,6 @@ impl Cursor { + /// + /// let reference = buff.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut T { &mut self.inner } + + /// Returns the current position of this cursor. +@@ -173,7 +169,6 @@ impl Cursor { + /// buff.seek(SeekFrom::Current(-1)).unwrap(); + /// assert_eq!(buff.position(), 1); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn position(&self) -> u64 { self.pos } + + /// Sets the position of this cursor. +@@ -193,11 +188,9 @@ impl Cursor { + /// buff.set_position(4); + /// assert_eq!(buff.position(), 4); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn set_position(&mut self, pos: u64) { self.pos = pos; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl io::Seek for Cursor where T: AsRef<[u8]> { + fn seek(&mut self, style: SeekFrom) -> io::Result { + let pos = match style { +@@ -216,25 +209,27 @@ impl io::Seek for Cursor where T: AsRef<[u8]> { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Cursor where T: AsRef<[u8]> { + fn read(&mut self, buf: &mut [u8]) -> io::Result { +- let n = Read::read(&mut self.fill_buf()?, buf)?; ++ let n = Read::read(&mut self.get_buf()?, buf)?; + self.pos += n as u64; + Ok(n) + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl BufRead for Cursor where T: AsRef<[u8]> { +- fn fill_buf(&mut self) -> io::Result<&[u8]> { ++impl Cursor where T: AsRef<[u8]> { ++ fn get_buf(&mut self) -> io::Result<&[u8]> { + let amt = cmp::min(self.pos, self.inner.as_ref().len() as u64); + Ok(&self.inner.as_ref()[(amt as usize)..]) + } ++} ++ ++#[cfg(feature = "collections")] ++impl BufRead for Cursor where T: AsRef<[u8]> { ++ fn fill_buf(&mut self) -> io::Result<&[u8]> { self.get_buf() } + fn consume(&mut self, amt: usize) { self.pos += amt as u64; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for Cursor<&'a mut [u8]> { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -246,7 +241,7 @@ impl<'a> Write for Cursor<&'a mut [u8]> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature = "collections")] + impl Write for Cursor> { + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos: usize = self.position().try_into().map_err(|_| { +@@ -276,8 +271,8 @@ impl Write for Cursor> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "cursor_box_slice", since = "1.5.0")] +-impl Write for Cursor> { ++#[cfg(feature = "alloc")] ++impl Write for Cursor<::alloc::boxed::Box<[u8]>> { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos = cmp::min(self.pos, self.inner.len() as u64); +diff --git a/error.rs b/error.rs +index 6d4da2e..14cfe1a 100644 +--- a/error.rs ++++ b/error.rs +@@ -8,11 +8,16 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use error; +-use fmt; +-use result; +-use sys; +-use convert::From; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++#[cfg(not(feature="alloc"))] use ::FakeBox as Box; ++use core::convert::Into; ++use core::fmt; ++use core::marker::{Send, Sync}; ++use core::option::Option::{self, Some, None}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(not(feature="collections"))] use ::ErrorString as String; ++use core::convert::From; + + /// A specialized [`Result`](../result/enum.Result.html) type for I/O + /// operations. +@@ -44,7 +49,6 @@ use convert::From; + /// Ok(buffer) + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub type Result = result::Result; + + /// The error type for I/O operations of the `Read`, `Write`, `Seek`, and +@@ -56,7 +60,6 @@ pub type Result = result::Result; + /// + /// [`ErrorKind`]: enum.ErrorKind.html + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Error { + repr: Repr, + } +@@ -64,13 +67,16 @@ pub struct Error { + enum Repr { + Os(i32), + Simple(ErrorKind), ++ #[cfg(feature="alloc")] + Custom(Box), ++ #[cfg(not(feature="alloc"))] ++ Custom(Custom), + } + + #[derive(Debug)] + struct Custom { + kind: ErrorKind, +- error: Box, ++ error: String, + } + + /// A list specifying general categories of I/O error. +@@ -82,47 +88,34 @@ struct Custom { + /// + /// [`io::Error`]: struct.Error.html + #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)] +-#[stable(feature = "rust1", since = "1.0.0")] + #[allow(deprecated)] + pub enum ErrorKind { + /// An entity was not found, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + NotFound, + /// The operation lacked the necessary privileges to complete. +- #[stable(feature = "rust1", since = "1.0.0")] + PermissionDenied, + /// The connection was refused by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionRefused, + /// The connection was reset by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionReset, + /// The connection was aborted (terminated) by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionAborted, + /// The network operation failed because it was not connected yet. +- #[stable(feature = "rust1", since = "1.0.0")] + NotConnected, + /// A socket address could not be bound because the address is already in + /// use elsewhere. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrInUse, + /// A nonexistent interface was requested or the requested address was not + /// local. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrNotAvailable, + /// The operation failed because a pipe was closed. +- #[stable(feature = "rust1", since = "1.0.0")] + BrokenPipe, + /// An entity already exists, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + AlreadyExists, + /// The operation needs to block to complete, but the blocking operation was + /// requested to not occur. +- #[stable(feature = "rust1", since = "1.0.0")] + WouldBlock, + /// A parameter was incorrect. +- #[stable(feature = "rust1", since = "1.0.0")] + InvalidInput, + /// Data not valid for the operation were encountered. + /// +@@ -134,10 +127,8 @@ pub enum ErrorKind { + /// `InvalidData` if the file's contents are not valid UTF-8. + /// + /// [`InvalidInput`]: #variant.InvalidInput +- #[stable(feature = "io_invalid_data", since = "1.2.0")] + InvalidData, + /// The I/O operation's timeout expired, causing it to be canceled. +- #[stable(feature = "rust1", since = "1.0.0")] + TimedOut, + /// An error returned when an operation could not be completed because a + /// call to [`write()`] returned [`Ok(0)`]. +@@ -148,15 +139,12 @@ pub enum ErrorKind { + /// + /// [`write()`]: ../../std/io/trait.Write.html#tymethod.write + /// [`Ok(0)`]: ../../std/io/type.Result.html +- #[stable(feature = "rust1", since = "1.0.0")] + WriteZero, + /// This operation was interrupted. + /// + /// Interrupted operations can typically be retried. +- #[stable(feature = "rust1", since = "1.0.0")] + Interrupted, + /// Any I/O error not part of this list. +- #[stable(feature = "rust1", since = "1.0.0")] + Other, + + /// An error returned when an operation could not be completed because an +@@ -165,15 +153,10 @@ pub enum ErrorKind { + /// This typically means that an operation could only succeed if it read a + /// particular number of bytes but only a smaller number of bytes could be + /// read. +- #[stable(feature = "read_exact", since = "1.6.0")] + UnexpectedEof, + + /// A marker variant that tells the compiler that users of this enum cannot + /// match it exhaustively. +- #[unstable(feature = "io_error_internals", +- reason = "better expressed through extensible enums that this \ +- enum cannot be exhaustively matched against", +- issue = "0")] + #[doc(hidden)] + __Nonexhaustive, + } +@@ -206,7 +189,6 @@ impl ErrorKind { + + /// Intended for use for errors not exposed to the user, where allocating onto + /// the heap (for normal construction via Error::new) is too costly. +-#[stable(feature = "io_error_from_errorkind", since = "1.14.0")] + impl From for Error { + fn from(kind: ErrorKind) -> Error { + Error { +@@ -234,14 +216,13 @@ impl Error { + /// // errors can also be created from other errors + /// let custom_error2 = Error::new(ErrorKind::Interrupted, custom_error); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(kind: ErrorKind, error: E) -> Error +- where E: Into> ++ where E: Into + { + Self::_new(kind, error.into()) + } + +- fn _new(kind: ErrorKind, error: Box) -> Error { ++ fn _new(kind: ErrorKind, error: String) -> Error { + Error { + repr: Repr::Custom(Box::new(Custom { + kind: kind, +@@ -250,24 +231,6 @@ impl Error { + } + } + +- /// Returns an error representing the last OS error which occurred. +- /// +- /// This function reads the value of `errno` for the target platform (e.g. +- /// `GetLastError` on Windows) and will return a corresponding instance of +- /// `Error` for the error code. +- /// +- /// # Examples +- /// +- /// ``` +- /// use std::io::Error; +- /// +- /// println!("last OS error: {:?}", Error::last_os_error()); +- /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] +- pub fn last_os_error() -> Error { +- Error::from_raw_os_error(sys::os::errno() as i32) +- } +- + /// Creates a new instance of an `Error` from a particular OS error code. + /// + /// # Examples +@@ -293,7 +256,6 @@ impl Error { + /// assert_eq!(error.kind(), io::ErrorKind::AddrInUse); + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn from_raw_os_error(code: i32) -> Error { + Error { repr: Repr::Os(code) } + } +@@ -324,7 +286,6 @@ impl Error { + /// print_os_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn raw_os_error(&self) -> Option { + match self.repr { + Repr::Os(i) => Some(i), +@@ -358,12 +319,11 @@ impl Error { + /// print_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_ref(&self) -> Option<&(error::Error+Send+Sync+'static)> { ++ pub fn get_ref(&self) -> Option<&String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref c) => Some(&*c.error), ++ Repr::Custom(ref c) => Some(&c.error), + } + } + +@@ -429,12 +389,11 @@ impl Error { + /// print_error(&change_error(Error::new(ErrorKind::Other, MyError::new()))); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_mut(&mut self) -> Option<&mut (error::Error+Send+Sync+'static)> { ++ pub fn get_mut(&mut self) -> Option<&mut String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref mut c) => Some(&mut *c.error), ++ Repr::Custom(ref mut c) => Some(&mut c.error), + } + } + +@@ -463,8 +422,7 @@ impl Error { + /// print_error(Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn into_inner(self) -> Option> { ++ pub fn into_inner(self) -> Option { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +@@ -490,10 +448,9 @@ impl Error { + /// print_error(Error::new(ErrorKind::AddrInUse, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn kind(&self) -> ErrorKind { + match self.repr { +- Repr::Os(code) => sys::decode_error_kind(code), ++ Repr::Os(_code) => ErrorKind::Other, + Repr::Custom(ref c) => c.kind, + Repr::Simple(kind) => kind, + } +@@ -504,21 +461,18 @@ impl fmt::Debug for Repr { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match *self { + Repr::Os(ref code) => +- fmt.debug_struct("Os").field("code", code) +- .field("message", &sys::os::error_string(*code)).finish(), ++ fmt.debug_struct("Os").field("code", code).finish(), + Repr::Custom(ref c) => fmt.debug_tuple("Custom").field(c).finish(), + Repr::Simple(kind) => fmt.debug_tuple("Kind").field(&kind).finish(), + } + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for Error { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match self.repr { + Repr::Os(code) => { +- let detail = sys::os::error_string(code); +- write!(fmt, "{} (os error {})", detail, code) ++ write!(fmt, "os error {}", code) + } + Repr::Custom(ref c) => c.error.fmt(fmt), + Repr::Simple(kind) => write!(fmt, "{}", kind.as_str()), +@@ -526,24 +480,6 @@ impl fmt::Display for Error { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for Error { +- fn description(&self) -> &str { +- match self.repr { +- Repr::Os(..) | Repr::Simple(..) => self.kind().as_str(), +- Repr::Custom(ref c) => c.error.description(), +- } +- } +- +- fn cause(&self) -> Option<&error::Error> { +- match self.repr { +- Repr::Os(..) => None, +- Repr::Simple(..) => None, +- Repr::Custom(ref c) => c.error.cause(), +- } +- } +-} +- + fn _assert_error_is_sync_send() { + fn _is_sync_send() {} + _is_sync_send::(); +diff --git a/impls.rs b/impls.rs +index f691289..c4374d3 100644 +--- a/impls.rs ++++ b/impls.rs +@@ -8,26 +8,31 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use cmp; +-use io::{self, SeekFrom, Read, Write, Seek, BufRead, Error, ErrorKind}; +-use fmt; +-use mem; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++use core::cmp; ++use io::{self, SeekFrom, Read, Write, Seek, Error, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; ++use core::fmt; ++use core::mem; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(feature="collections")] use collections::vec::Vec; + + // ============================================================================= + // Forwarding implementations + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, R: Read + ?Sized> Read for &'a mut R { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -38,7 +43,6 @@ impl<'a, R: Read + ?Sized> Read for &'a mut R { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, W: Write + ?Sized> Write for &'a mut W { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -56,12 +60,11 @@ impl<'a, W: Write + ?Sized> Write for &'a mut W { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, S: Seek + ?Sized> Seek for &'a mut S { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -80,18 +83,20 @@ impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Read for Box { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -102,7 +107,7 @@ impl Read for Box { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Write for Box { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -120,12 +125,12 @@ impl Write for Box { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Seek for Box { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Box { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -151,7 +156,6 @@ impl BufRead for Box { + /// + /// Note that reading updates the slice to point to the yet unread part. + /// The slice will be empty when EOF is reached. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Read for &'a [u8] { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { +@@ -193,7 +197,7 @@ impl<'a> Read for &'a [u8] { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a> BufRead for &'a [u8] { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(*self) } +@@ -207,7 +211,6 @@ impl<'a> BufRead for &'a [u8] { + /// + /// Note that writing updates the slice to point to the yet unwritten part. + /// The slice will be empty when it has been completely overwritten. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for &'a mut [u8] { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -233,7 +236,7 @@ impl<'a> Write for &'a mut [u8] { + + /// Write is implemented for `Vec` by appending to the vector. + /// The vector will grow as needed. +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Write for Vec { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { +diff --git a/memchr.rs b/memchr.rs +index 3824a5f..312cf47 100644 +--- a/memchr.rs ++++ b/memchr.rs +@@ -11,10 +11,12 @@ + // Original implementation taken from rust-memchr + // Copyright 2015 Andrew Gallant, bluss and Nicolas Koch + ++pub use self::fallback::{memchr,memrchr}; ++ + #[allow(dead_code)] + pub mod fallback { +- use cmp; +- use mem; ++ use core::cmp; ++ use core::mem; + + const LO_U64: u64 = 0x0101010101010101; + const HI_U64: u64 = 0x8080808080808080; +diff --git a/mod.rs b/mod.rs +index de5fc5b..1879347 100644 +--- a/mod.rs ++++ b/mod.rs +@@ -253,44 +253,34 @@ + //! [`?` operator]: ../../book/syntax-index.html + //! [`read()`]: trait.Read.html#tymethod.read + +-#![stable(feature = "rust1", since = "1.0.0")] +- +-use cmp; ++use core::cmp; + use std_unicode::str as core_str; +-use error as std_error; +-use fmt; +-use result; +-use str; +-use memchr; +- +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::{BufReader, BufWriter, LineWriter}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::IntoInnerError; +-#[stable(feature = "rust1", since = "1.0.0")] ++use core::fmt; ++use core::iter::{Iterator}; ++use core::marker::Sized; ++#[cfg(feature="collections")] use core::ops::{Drop, FnOnce}; ++use core::option::Option::{self, Some, None}; ++use core::result::Result::{Ok, Err}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++use core::str; ++#[cfg(feature="collections")] use collections::vec::Vec; ++mod memchr; ++ ++#[cfg(feature="collections")] pub use self::buffered::{BufReader, BufWriter, LineWriter}; ++#[cfg(feature="collections")] pub use self::buffered::IntoInnerError; + pub use self::cursor::Cursor; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::error::{Result, Error, ErrorKind}; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::util::{copy, sink, Sink, empty, Empty, repeat, Repeat}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{stdin, stdout, stderr, _print, Stdin, Stdout, Stderr}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{StdoutLock, StderrLock, StdinLock}; +-#[unstable(feature = "libstd_io_internals", issue = "0")] +-#[doc(no_inline, hidden)] +-pub use self::stdio::{set_panic, set_print}; + + pub mod prelude; +-mod buffered; ++#[cfg(feature="collections")] mod buffered; + mod cursor; + mod error; + mod impls; +-mod lazy; + mod util; +-mod stdio; + +-const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; ++const DEFAULT_BUF_SIZE: usize = 8 * 1024; + + // A few methods below (read_to_string, read_line) will append data into a + // `String` buffer, but we need to be pretty careful when doing this. The +@@ -310,6 +300,7 @@ const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; + // 2. We're passing a raw buffer to the function `f`, and it is expected that + // the function only *appends* bytes to the buffer. We'll get undefined + // behavior if existing bytes are overwritten to have non-UTF-8 data. ++#[cfg(feature="collections")] + fn append_to_string(buf: &mut String, f: F) -> Result + where F: FnOnce(&mut Vec) -> Result + { +@@ -341,6 +332,7 @@ fn append_to_string(buf: &mut String, f: F) -> Result + // of data to return. Simply tacking on an extra DEFAULT_BUF_SIZE space every + // time is 4,500 times (!) slower than this if the reader has a very small + // amount of data to return. ++#[cfg(feature="collections")] + fn read_to_end(r: &mut R, buf: &mut Vec) -> Result { + let start_len = buf.len(); + let mut len = start_len; +@@ -423,7 +415,6 @@ fn read_to_end(r: &mut R, buf: &mut Vec) -> Result + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Read { + /// Pull some bytes from this source into the specified buffer, returning + /// how many bytes were read. +@@ -473,7 +464,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read(&mut self, buf: &mut [u8]) -> Result; + + /// Read all bytes until EOF in this source, placing them into `buf`. +@@ -515,7 +505,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_end(&mut self, buf: &mut Vec) -> Result { + read_to_end(self, buf) + } +@@ -553,7 +543,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_string(&mut self, buf: &mut String) -> Result { + // Note that we do *not* call `.read_to_end()` here. We are passing + // `&mut Vec` (the raw contents of `buf`) into the `read_to_end` +@@ -614,7 +604,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "read_exact", since = "1.6.0")] + fn read_exact(&mut self, mut buf: &mut [u8]) -> Result<()> { + while !buf.is_empty() { + match self.read(buf) { +@@ -666,7 +655,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + + /// Transforms this `Read` instance to an `Iterator` over its bytes. +@@ -696,7 +684,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn bytes(self) -> Bytes where Self: Sized { + Bytes { inner: self } + } +@@ -733,10 +720,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[unstable(feature = "io", reason = "the semantics of a partial read/write \ +- of where errors happen is currently \ +- unclear and may change", +- issue = "27802")] + fn chars(self) -> Chars where Self: Sized { + Chars { inner: self } + } +@@ -771,7 +754,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn chain(self, next: R) -> Chain where Self: Sized { + Chain { first: self, second: next, done_first: false } + } +@@ -805,7 +787,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn take(self, limit: u64) -> Take where Self: Sized { + Take { inner: self, limit: limit } + } +@@ -845,7 +826,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Write { + /// Write a buffer into this object, returning how many bytes were written. + /// +@@ -885,7 +865,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write(&mut self, buf: &[u8]) -> Result; + + /// Flush this output stream, ensuring that all intermediately buffered +@@ -911,7 +890,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn flush(&mut self) -> Result<()>; + + /// Attempts to write an entire buffer into this write. +@@ -938,7 +916,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_all(&mut self, mut buf: &[u8]) -> Result<()> { + while !buf.is_empty() { + match self.write(buf) { +@@ -990,7 +967,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_fmt(&mut self, fmt: fmt::Arguments) -> Result<()> { + // Create a shim which translates a Write to a fmt::Write and saves + // off I/O errors. instead of discarding them +@@ -1046,7 +1022,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + } + +@@ -1076,7 +1051,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Seek { + /// Seek to an offset, in bytes, in a stream. + /// +@@ -1092,7 +1066,6 @@ pub trait Seek { + /// Seeking to a negative offset is considered an error. + /// + /// [`SeekFrom::Start`]: enum.SeekFrom.html#variant.Start +- #[stable(feature = "rust1", since = "1.0.0")] + fn seek(&mut self, pos: SeekFrom) -> Result; + } + +@@ -1102,29 +1075,26 @@ pub trait Seek { + /// + /// [`Seek`]: trait.Seek.html + #[derive(Copy, PartialEq, Eq, Clone, Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub enum SeekFrom { + /// Set the offset to the provided number of bytes. +- #[stable(feature = "rust1", since = "1.0.0")] +- Start(#[stable(feature = "rust1", since = "1.0.0")] u64), ++ Start(u64), + + /// Set the offset to the size of this object plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- End(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ End(i64), + + /// Set the offset to the current position plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- Current(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ Current(i64), + } + ++#[cfg(feature="collections")] + fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + -> Result { + let mut read = 0; +@@ -1204,7 +1174,7 @@ fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + /// # } + /// ``` + /// +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub trait BufRead: Read { + /// Fills the internal buffer of this object, returning the buffer contents. + /// +@@ -1249,7 +1219,6 @@ pub trait BufRead: Read { + /// // ensure the bytes we worked with aren't returned again later + /// stdin.consume(length); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn fill_buf(&mut self) -> Result<&[u8]>; + + /// Tells this buffer that `amt` bytes have been consumed from the buffer, +@@ -1271,7 +1240,6 @@ pub trait BufRead: Read { + /// that method's example includes an example of `consume()`. + /// + /// [`fill_buf()`]: #tymethod.fill_buf +- #[stable(feature = "rust1", since = "1.0.0")] + fn consume(&mut self, amt: usize); + + /// Read all bytes into `buf` until the delimiter `byte` or EOF is reached. +@@ -1313,7 +1281,6 @@ pub trait BufRead: Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_until(&mut self, byte: u8, buf: &mut Vec) -> Result { + read_until(self, byte, buf) + } +@@ -1360,7 +1327,6 @@ pub trait BufRead: Read { + /// buffer.clear(); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_line(&mut self, buf: &mut String) -> Result { + // Note that we are not calling the `.read_until` method here, but + // rather our hardcoded implementation. For more details as to why, see +@@ -1397,7 +1363,6 @@ pub trait BufRead: Read { + /// println!("{:?}", content.unwrap()); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn split(self, byte: u8) -> Split where Self: Sized { + Split { buf: self, delim: byte } + } +@@ -1431,7 +1396,6 @@ pub trait BufRead: Read { + /// Each line of the iterator has the same error semantics as [`BufRead::read_line()`]. + /// + /// [`BufRead::read_line()`]: trait.BufRead.html#method.read_line +- #[stable(feature = "rust1", since = "1.0.0")] + fn lines(self) -> Lines where Self: Sized { + Lines { buf: self } + } +@@ -1443,14 +1407,12 @@ pub trait BufRead: Read { + /// Please see the documentation of [`chain()`] for more details. + /// + /// [`chain()`]: trait.Read.html#method.chain +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Chain { + first: T, + second: U, + done_first: bool, + } + +-#[stable(feature = "std_debug", since = "1.15.0")] + impl fmt::Debug for Chain { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.debug_struct("Chain") +@@ -1460,7 +1422,6 @@ impl fmt::Debug for Chain { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Chain { + fn read(&mut self, buf: &mut [u8]) -> Result { + if !self.done_first { +@@ -1473,7 +1434,7 @@ impl Read for Chain { + } + } + +-#[stable(feature = "chain_bufread", since = "1.9.0")] ++#[cfg(feature="collections")] + impl BufRead for Chain { + fn fill_buf(&mut self) -> Result<&[u8]> { + if !self.done_first { +@@ -1500,7 +1461,6 @@ impl BufRead for Chain { + /// Please see the documentation of [`take()`] for more details. + /// + /// [`take()`]: trait.Read.html#method.take +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Debug)] + pub struct Take { + inner: T, +@@ -1535,7 +1495,6 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn limit(&self) -> u64 { self.limit } + + /// Consumes the `Take`, returning the wrapped reader. +@@ -1558,13 +1517,11 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "io_take_into_inner", since = "1.15.0")] + pub fn into_inner(self) -> T { + self.inner + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Take { + fn read(&mut self, buf: &mut [u8]) -> Result { + // Don't call into inner reader at all at EOF because it may still block +@@ -1579,7 +1536,7 @@ impl Read for Take { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Take { + fn fill_buf(&mut self) -> Result<&[u8]> { + // Don't call into inner reader at all at EOF because it may still block +@@ -1618,13 +1575,11 @@ fn read_one_byte(reader: &mut Read) -> Option> { + /// Please see the documentation of [`bytes()`] for more details. + /// + /// [`bytes()`]: trait.Read.html#method.bytes +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Debug)] + pub struct Bytes { + inner: R, + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Iterator for Bytes { + type Item = Result; + +@@ -1639,8 +1594,6 @@ impl Iterator for Bytes { + /// Please see the documentation of `chars()` for more details. + /// + /// [chars]: trait.Read.html#method.chars +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + #[derive(Debug)] + pub struct Chars { + inner: R, +@@ -1649,8 +1602,6 @@ pub struct Chars { + /// An enumeration of possible errors that can be generated from the `Chars` + /// adapter. + #[derive(Debug)] +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + pub enum CharsError { + /// Variant representing that the underlying stream was read successfully + /// but it did not contain valid utf8 data. +@@ -1660,8 +1611,6 @@ pub enum CharsError { + Other(Error), + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl Iterator for Chars { + type Item = result::Result; + +@@ -1693,25 +1642,6 @@ impl Iterator for Chars { + } + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] +-impl std_error::Error for CharsError { +- fn description(&self) -> &str { +- match *self { +- CharsError::NotUtf8 => "invalid utf8 encoding", +- CharsError::Other(ref e) => std_error::Error::description(e), +- } +- } +- fn cause(&self) -> Option<&std_error::Error> { +- match *self { +- CharsError::NotUtf8 => None, +- CharsError::Other(ref e) => e.cause(), +- } +- } +-} +- +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl fmt::Display for CharsError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + match *self { +@@ -1730,14 +1660,14 @@ impl fmt::Display for CharsError { + /// `BufRead`. Please see the documentation of `split()` for more details. + /// + /// [split]: trait.BufRead.html#method.split +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + #[derive(Debug)] + pub struct Split { + buf: B, + delim: u8, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Split { + type Item = Result>; + +@@ -1762,13 +1692,13 @@ impl Iterator for Split { + /// `BufRead`. Please see the documentation of `lines()` for more details. + /// + /// [lines]: trait.BufRead.html#method.lines +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + #[derive(Debug)] + pub struct Lines { + buf: B, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Lines { + type Item = Result; + +diff --git a/prelude.rs b/prelude.rs +index 8772d0f..49d66c9 100644 +--- a/prelude.rs ++++ b/prelude.rs +@@ -18,7 +18,8 @@ + //! use std::io::prelude::*; + //! ``` + +-#![stable(feature = "rust1", since = "1.0.0")] ++pub use super::{Read, Write, Seek}; ++#[cfg(feature="collections")] pub use super::BufRead; + +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use super::{Read, Write, BufRead, Seek}; ++#[cfg(feature="collections")] pub use alloc::boxed::Box; ++#[cfg(feature="collections")] pub use collections::vec::Vec; +diff --git a/util.rs b/util.rs +index e506651..f26f6d0 100644 +--- a/util.rs ++++ b/util.rs +@@ -10,8 +10,9 @@ + + #![allow(missing_copy_implementations)] + +-use fmt; +-use io::{self, Read, Write, ErrorKind, BufRead}; ++use core::fmt; ++use io::{self, Read, Write, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; + + /// Copies the entire contents of a reader into a writer. + /// +@@ -43,7 +44,6 @@ use io::{self, Read, Write, ErrorKind, BufRead}; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn copy(reader: &mut R, writer: &mut W) -> io::Result + where R: Read, W: Write + { +@@ -67,7 +67,6 @@ pub fn copy(reader: &mut R, writer: &mut W) -> io::Result< + /// the documentation of `empty()` for more details. + /// + /// [empty]: fn.empty.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Empty { _priv: () } + + /// Constructs a new handle to an empty reader. +@@ -85,20 +84,17 @@ pub struct Empty { _priv: () } + /// io::empty().read_to_string(&mut buffer).unwrap(); + /// assert!(buffer.is_empty()); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn empty() -> Empty { Empty { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Empty { + fn read(&mut self, _buf: &mut [u8]) -> io::Result { Ok(0) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Empty { + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(&[]) } + fn consume(&mut self, _n: usize) {} + } + +-#[stable(feature = "std_debug", since = "1.15.0")] + impl fmt::Debug for Empty { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Empty { .. }") +@@ -111,7 +107,6 @@ impl fmt::Debug for Empty { + /// see the documentation of `repeat()` for more details. + /// + /// [repeat]: fn.repeat.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Repeat { byte: u8 } + + /// Creates an instance of a reader that infinitely repeats one byte. +@@ -128,10 +123,8 @@ pub struct Repeat { byte: u8 } + /// io::repeat(0b101).read_exact(&mut buffer).unwrap(); + /// assert_eq!(buffer, [0b101, 0b101, 0b101]); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn repeat(byte: u8) -> Repeat { Repeat { byte: byte } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Repeat { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + for slot in &mut *buf { +@@ -141,7 +134,6 @@ impl Read for Repeat { + } + } + +-#[stable(feature = "std_debug", since = "1.15.0")] + impl fmt::Debug for Repeat { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Repeat { .. }") +@@ -154,7 +146,6 @@ impl fmt::Debug for Repeat { + /// see the documentation of `sink()` for more details. + /// + /// [sink]: fn.sink.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Sink { _priv: () } + + /// Creates an instance of a writer which will successfully consume all data. +@@ -171,16 +162,13 @@ pub struct Sink { _priv: () } + /// let num_bytes = io::sink().write(&buffer).unwrap(); + /// assert_eq!(num_bytes, 5); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn sink() -> Sink { Sink { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for Sink { + fn write(&mut self, buf: &[u8]) -> io::Result { Ok(buf.len()) } + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "std_debug", since = "1.15.0")] + impl fmt::Debug for Sink { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Sink { .. }") diff --git a/patches/3be2c3b3092e934bdc2db67d5bdcabd611deca9c.patch b/patches/3be2c3b3092e934bdc2db67d5bdcabd611deca9c.patch new file mode 100644 index 0000000..041adf8 --- /dev/null +++ b/patches/3be2c3b3092e934bdc2db67d5bdcabd611deca9c.patch @@ -0,0 +1,1476 @@ +diff --git a/buffered.rs b/buffered.rs +index cd7a50d..efa81b6 100644 +--- a/buffered.rs ++++ b/buffered.rs +@@ -10,13 +10,13 @@ + + //! Buffering wrappers for I/O traits + ++use core::prelude::v1::*; + use io::prelude::*; + +-use cmp; +-use error; +-use fmt; ++use core::cmp; ++use core::fmt; + use io::{self, DEFAULT_BUF_SIZE, Error, ErrorKind, SeekFrom}; +-use memchr; ++use io::memchr; + + /// The `BufReader` struct adds buffering to any reader. + /// +@@ -46,7 +46,6 @@ use memchr; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufReader { + inner: R, + buf: Box<[u8]>, +@@ -69,7 +68,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: R) -> BufReader { + BufReader::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -90,7 +88,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: R) -> BufReader { + BufReader { + inner: inner, +@@ -118,7 +115,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &R { &self.inner } + + /// Gets a mutable reference to the underlying reader. +@@ -139,7 +135,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut R { &mut self.inner } + + /// Unwraps this `BufReader`, returning the underlying reader. +@@ -160,11 +155,9 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> R { self.inner } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for BufReader { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + // If we don't have any buffered data and we're doing a massive read +@@ -182,7 +175,6 @@ impl Read for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl BufRead for BufReader { + fn fill_buf(&mut self) -> io::Result<&[u8]> { + // If we've reached the end of our internal buffer then we need to fetch +@@ -202,7 +194,6 @@ impl BufRead for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufReader where R: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufReader") +@@ -212,7 +203,6 @@ impl fmt::Debug for BufReader where R: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufReader { + /// Seek to an offset, in bytes, in the underlying reader. + /// +@@ -305,7 +295,6 @@ impl Seek for BufReader { + /// [`Write`]: ../../std/io/trait.Write.html + /// [`write`]: ../../std/net/struct.TcpStream.html#method.write + /// [`TcpStream`]: ../../std/net/struct.TcpStream.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufWriter { + inner: Option, + buf: Vec, +@@ -340,7 +329,6 @@ pub struct BufWriter { + /// }; + /// ``` + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct IntoInnerError(W, Error); + + impl BufWriter { +@@ -354,7 +342,6 @@ impl BufWriter { + /// + /// let mut buffer = BufWriter::new(TcpStream::connect("127.0.0.1:34254").unwrap()); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> BufWriter { + BufWriter::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -372,7 +359,6 @@ impl BufWriter { + /// let stream = TcpStream::connect("127.0.0.1:34254").unwrap(); + /// let mut buffer = BufWriter::with_capacity(100, stream); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> BufWriter { + BufWriter { + inner: Some(inner), +@@ -421,7 +407,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.as_ref().unwrap() } + + /// Gets a mutable reference to the underlying writer. +@@ -439,7 +424,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.as_mut().unwrap() } + + /// Unwraps this `BufWriter`, returning the underlying writer. +@@ -457,7 +441,6 @@ impl BufWriter { + /// // unwrap the TcpStream and flush the buffer + /// let stream = buffer.into_inner().unwrap(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(mut self) -> Result>> { + match self.flush_buf() { + Err(e) => Err(IntoInnerError(self, e)), +@@ -466,7 +449,6 @@ impl BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for BufWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.buf.len() + buf.len() > self.buf.capacity() { +@@ -486,7 +468,6 @@ impl Write for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufWriter") +@@ -496,7 +477,6 @@ impl fmt::Debug for BufWriter where W: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufWriter { + /// Seek to the offset, in bytes, in the underlying writer. + /// +@@ -506,7 +486,6 @@ impl Seek for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Drop for BufWriter { + fn drop(&mut self) { + if self.inner.is_some() && !self.panicked { +@@ -545,7 +524,6 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn error(&self) -> &Error { &self.1 } + + /// Returns the buffered writer instance which generated the error. +@@ -578,23 +556,13 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> W { self.0 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl From> for Error { + fn from(iie: IntoInnerError) -> Error { iie.1 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for IntoInnerError { +- fn description(&self) -> &str { +- error::Error::description(self.error()) +- } +-} +- +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for IntoInnerError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.error().fmt(f) +@@ -649,7 +617,6 @@ impl fmt::Display for IntoInnerError { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct LineWriter { + inner: BufWriter, + } +@@ -669,7 +636,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> LineWriter { + // Lines typically aren't that long, don't use a giant buffer + LineWriter::with_capacity(1024, inner) +@@ -690,7 +656,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> LineWriter { + LineWriter { inner: BufWriter::with_capacity(cap, inner) } + } +@@ -711,7 +676,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.get_ref() } + + /// Gets a mutable reference to the underlying writer. +@@ -734,7 +698,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.get_mut() } + + /// Unwraps this `LineWriter`, returning the underlying writer. +@@ -756,7 +719,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> Result>> { + self.inner.into_inner().map_err(|IntoInnerError(buf, e)| { + IntoInnerError(LineWriter { inner: buf }, e) +@@ -764,7 +726,6 @@ impl LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for LineWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + match memchr::memrchr(b'\n', buf) { +@@ -783,7 +744,6 @@ impl Write for LineWriter { + fn flush(&mut self) -> io::Result<()> { self.inner.flush() } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for LineWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("LineWriter") +diff --git a/cursor.rs b/cursor.rs +index 1b50233..6a7b44f 100644 +--- a/cursor.rs ++++ b/cursor.rs +@@ -8,10 +8,11 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + ++use core::prelude::v1::*; + use io::prelude::*; + +-use core::convert::TryInto; +-use cmp; ++#[cfg(feature = "collections")] use core::convert::TryInto; ++use core::cmp; + use io::{self, SeekFrom, Error, ErrorKind}; + + /// A `Cursor` wraps another type and provides it with a +@@ -79,7 +80,6 @@ use io::{self, SeekFrom, Error, ErrorKind}; + /// assert_eq!(&buff.get_ref()[5..15], &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]); + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Clone, Debug)] + pub struct Cursor { + inner: T, +@@ -98,7 +98,6 @@ impl Cursor { + /// # fn force_inference(_: &Cursor>) {} + /// # force_inference(&buff); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: T) -> Cursor { + Cursor { pos: 0, inner: inner } + } +@@ -116,7 +115,6 @@ impl Cursor { + /// + /// let vec = buff.into_inner(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> T { self.inner } + + /// Gets a reference to the underlying value in this cursor. +@@ -132,7 +130,6 @@ impl Cursor { + /// + /// let reference = buff.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &T { &self.inner } + + /// Gets a mutable reference to the underlying value in this cursor. +@@ -151,7 +148,6 @@ impl Cursor { + /// + /// let reference = buff.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut T { &mut self.inner } + + /// Returns the current position of this cursor. +@@ -173,7 +169,6 @@ impl Cursor { + /// buff.seek(SeekFrom::Current(-1)).unwrap(); + /// assert_eq!(buff.position(), 1); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn position(&self) -> u64 { self.pos } + + /// Sets the position of this cursor. +@@ -193,11 +188,9 @@ impl Cursor { + /// buff.set_position(4); + /// assert_eq!(buff.position(), 4); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn set_position(&mut self, pos: u64) { self.pos = pos; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl io::Seek for Cursor where T: AsRef<[u8]> { + fn seek(&mut self, style: SeekFrom) -> io::Result { + let pos = match style { +@@ -216,25 +209,27 @@ impl io::Seek for Cursor where T: AsRef<[u8]> { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Cursor where T: AsRef<[u8]> { + fn read(&mut self, buf: &mut [u8]) -> io::Result { +- let n = Read::read(&mut self.fill_buf()?, buf)?; ++ let n = Read::read(&mut self.get_buf()?, buf)?; + self.pos += n as u64; + Ok(n) + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl BufRead for Cursor where T: AsRef<[u8]> { +- fn fill_buf(&mut self) -> io::Result<&[u8]> { ++impl Cursor where T: AsRef<[u8]> { ++ fn get_buf(&mut self) -> io::Result<&[u8]> { + let amt = cmp::min(self.pos, self.inner.as_ref().len() as u64); + Ok(&self.inner.as_ref()[(amt as usize)..]) + } ++} ++ ++#[cfg(feature = "collections")] ++impl BufRead for Cursor where T: AsRef<[u8]> { ++ fn fill_buf(&mut self) -> io::Result<&[u8]> { self.get_buf() } + fn consume(&mut self, amt: usize) { self.pos += amt as u64; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for Cursor<&'a mut [u8]> { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -246,7 +241,7 @@ impl<'a> Write for Cursor<&'a mut [u8]> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature = "collections")] + impl Write for Cursor> { + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos: usize = self.position().try_into().map_err(|_| { +@@ -276,8 +271,8 @@ impl Write for Cursor> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "cursor_box_slice", since = "1.5.0")] +-impl Write for Cursor> { ++#[cfg(feature = "alloc")] ++impl Write for Cursor<::alloc::boxed::Box<[u8]>> { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos = cmp::min(self.pos, self.inner.len() as u64); +diff --git a/error.rs b/error.rs +index 795c89c..9a11eee 100644 +--- a/error.rs ++++ b/error.rs +@@ -8,11 +8,16 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use error; +-use fmt; +-use result; +-use sys; +-use convert::From; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++#[cfg(not(feature="alloc"))] use ::FakeBox as Box; ++use core::convert::Into; ++use core::fmt; ++use core::marker::{Send, Sync}; ++use core::option::Option::{self, Some, None}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(not(feature="collections"))] use ::ErrorString as String; ++use core::convert::From; + + /// A specialized [`Result`](../result/enum.Result.html) type for I/O + /// operations. +@@ -44,7 +49,6 @@ use convert::From; + /// Ok(buffer) + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub type Result = result::Result; + + /// The error type for I/O operations of the `Read`, `Write`, `Seek`, and +@@ -56,7 +60,6 @@ pub type Result = result::Result; + /// + /// [`ErrorKind`]: enum.ErrorKind.html + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Error { + repr: Repr, + } +@@ -64,13 +67,16 @@ pub struct Error { + enum Repr { + Os(i32), + Simple(ErrorKind), ++ #[cfg(feature="alloc")] + Custom(Box), ++ #[cfg(not(feature="alloc"))] ++ Custom(Custom), + } + + #[derive(Debug)] + struct Custom { + kind: ErrorKind, +- error: Box, ++ error: String, + } + + /// A list specifying general categories of I/O error. +@@ -82,47 +88,34 @@ struct Custom { + /// + /// [`io::Error`]: struct.Error.html + #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)] +-#[stable(feature = "rust1", since = "1.0.0")] + #[allow(deprecated)] + pub enum ErrorKind { + /// An entity was not found, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + NotFound, + /// The operation lacked the necessary privileges to complete. +- #[stable(feature = "rust1", since = "1.0.0")] + PermissionDenied, + /// The connection was refused by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionRefused, + /// The connection was reset by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionReset, + /// The connection was aborted (terminated) by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionAborted, + /// The network operation failed because it was not connected yet. +- #[stable(feature = "rust1", since = "1.0.0")] + NotConnected, + /// A socket address could not be bound because the address is already in + /// use elsewhere. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrInUse, + /// A nonexistent interface was requested or the requested address was not + /// local. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrNotAvailable, + /// The operation failed because a pipe was closed. +- #[stable(feature = "rust1", since = "1.0.0")] + BrokenPipe, + /// An entity already exists, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + AlreadyExists, + /// The operation needs to block to complete, but the blocking operation was + /// requested to not occur. +- #[stable(feature = "rust1", since = "1.0.0")] + WouldBlock, + /// A parameter was incorrect. +- #[stable(feature = "rust1", since = "1.0.0")] + InvalidInput, + /// Data not valid for the operation were encountered. + /// +@@ -134,10 +127,8 @@ pub enum ErrorKind { + /// `InvalidData` if the file's contents are not valid UTF-8. + /// + /// [`InvalidInput`]: #variant.InvalidInput +- #[stable(feature = "io_invalid_data", since = "1.2.0")] + InvalidData, + /// The I/O operation's timeout expired, causing it to be canceled. +- #[stable(feature = "rust1", since = "1.0.0")] + TimedOut, + /// An error returned when an operation could not be completed because a + /// call to [`write()`] returned [`Ok(0)`]. +@@ -148,15 +139,12 @@ pub enum ErrorKind { + /// + /// [`write()`]: ../../std/io/trait.Write.html#tymethod.write + /// [`Ok(0)`]: ../../std/io/type.Result.html +- #[stable(feature = "rust1", since = "1.0.0")] + WriteZero, + /// This operation was interrupted. + /// + /// Interrupted operations can typically be retried. +- #[stable(feature = "rust1", since = "1.0.0")] + Interrupted, + /// Any I/O error not part of this list. +- #[stable(feature = "rust1", since = "1.0.0")] + Other, + + /// An error returned when an operation could not be completed because an +@@ -165,15 +153,10 @@ pub enum ErrorKind { + /// This typically means that an operation could only succeed if it read a + /// particular number of bytes but only a smaller number of bytes could be + /// read. +- #[stable(feature = "read_exact", since = "1.6.0")] + UnexpectedEof, + + /// A marker variant that tells the compiler that users of this enum cannot + /// match it exhaustively. +- #[unstable(feature = "io_error_internals", +- reason = "better expressed through extensible enums that this \ +- enum cannot be exhaustively matched against", +- issue = "0")] + #[doc(hidden)] + __Nonexhaustive, + } +@@ -206,7 +189,6 @@ impl ErrorKind { + + /// Intended for use for errors not exposed to the user, where allocating onto + /// the heap (for normal construction via Error::new) is too costly. +-#[stable(feature = "io_error_from_errorkind", since = "1.14.0")] + impl From for Error { + fn from(kind: ErrorKind) -> Error { + Error { +@@ -234,14 +216,13 @@ impl Error { + /// // errors can also be created from other errors + /// let custom_error2 = Error::new(ErrorKind::Interrupted, custom_error); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(kind: ErrorKind, error: E) -> Error +- where E: Into> ++ where E: Into + { + Self::_new(kind, error.into()) + } + +- fn _new(kind: ErrorKind, error: Box) -> Error { ++ fn _new(kind: ErrorKind, error: String) -> Error { + Error { + repr: Repr::Custom(Box::new(Custom { + kind: kind, +@@ -250,24 +231,6 @@ impl Error { + } + } + +- /// Returns an error representing the last OS error which occurred. +- /// +- /// This function reads the value of `errno` for the target platform (e.g. +- /// `GetLastError` on Windows) and will return a corresponding instance of +- /// `Error` for the error code. +- /// +- /// # Examples +- /// +- /// ``` +- /// use std::io::Error; +- /// +- /// println!("last OS error: {:?}", Error::last_os_error()); +- /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] +- pub fn last_os_error() -> Error { +- Error::from_raw_os_error(sys::os::errno() as i32) +- } +- + /// Creates a new instance of an `Error` from a particular OS error code. + /// + /// # Examples +@@ -293,7 +256,6 @@ impl Error { + /// assert_eq!(error.kind(), io::ErrorKind::AddrInUse); + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn from_raw_os_error(code: i32) -> Error { + Error { repr: Repr::Os(code) } + } +@@ -324,7 +286,6 @@ impl Error { + /// print_os_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn raw_os_error(&self) -> Option { + match self.repr { + Repr::Os(i) => Some(i), +@@ -358,12 +319,11 @@ impl Error { + /// print_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_ref(&self) -> Option<&(error::Error+Send+Sync+'static)> { ++ pub fn get_ref(&self) -> Option<&String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref c) => Some(&*c.error), ++ Repr::Custom(ref c) => Some(&c.error), + } + } + +@@ -429,12 +389,11 @@ impl Error { + /// print_error(&change_error(Error::new(ErrorKind::Other, MyError::new()))); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_mut(&mut self) -> Option<&mut (error::Error+Send+Sync+'static)> { ++ pub fn get_mut(&mut self) -> Option<&mut String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref mut c) => Some(&mut *c.error), ++ Repr::Custom(ref mut c) => Some(&mut c.error), + } + } + +@@ -463,8 +422,7 @@ impl Error { + /// print_error(Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn into_inner(self) -> Option> { ++ pub fn into_inner(self) -> Option { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +@@ -490,10 +448,9 @@ impl Error { + /// print_error(Error::new(ErrorKind::AddrInUse, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn kind(&self) -> ErrorKind { + match self.repr { +- Repr::Os(code) => sys::decode_error_kind(code), ++ Repr::Os(_code) => ErrorKind::Other, + Repr::Custom(ref c) => c.kind, + Repr::Simple(kind) => kind, + } +@@ -504,21 +461,18 @@ impl fmt::Debug for Repr { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match *self { + Repr::Os(ref code) => +- fmt.debug_struct("Os").field("code", code) +- .field("message", &sys::os::error_string(*code)).finish(), ++ fmt.debug_struct("Os").field("code", code).finish(), + Repr::Custom(ref c) => fmt.debug_tuple("Custom").field(c).finish(), + Repr::Simple(kind) => fmt.debug_tuple("Kind").field(&kind).finish(), + } + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for Error { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match self.repr { + Repr::Os(code) => { +- let detail = sys::os::error_string(code); +- write!(fmt, "{} (os error {})", detail, code) ++ write!(fmt, "os error {}", code) + } + Repr::Custom(ref c) => c.error.fmt(fmt), + Repr::Simple(kind) => write!(fmt, "{}", kind.as_str()), +@@ -526,24 +480,6 @@ impl fmt::Display for Error { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for Error { +- fn description(&self) -> &str { +- match self.repr { +- Repr::Os(..) | Repr::Simple(..) => self.kind().as_str(), +- Repr::Custom(ref c) => c.error.description(), +- } +- } +- +- fn cause(&self) -> Option<&error::Error> { +- match self.repr { +- Repr::Os(..) => None, +- Repr::Simple(..) => None, +- Repr::Custom(ref c) => c.error.cause(), +- } +- } +-} +- + fn _assert_error_is_sync_send() { + fn _is_sync_send() {} + _is_sync_send::(); +diff --git a/impls.rs b/impls.rs +index f691289..c4374d3 100644 +--- a/impls.rs ++++ b/impls.rs +@@ -8,26 +8,31 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use cmp; +-use io::{self, SeekFrom, Read, Write, Seek, BufRead, Error, ErrorKind}; +-use fmt; +-use mem; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++use core::cmp; ++use io::{self, SeekFrom, Read, Write, Seek, Error, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; ++use core::fmt; ++use core::mem; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(feature="collections")] use collections::vec::Vec; + + // ============================================================================= + // Forwarding implementations + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, R: Read + ?Sized> Read for &'a mut R { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -38,7 +43,6 @@ impl<'a, R: Read + ?Sized> Read for &'a mut R { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, W: Write + ?Sized> Write for &'a mut W { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -56,12 +60,11 @@ impl<'a, W: Write + ?Sized> Write for &'a mut W { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, S: Seek + ?Sized> Seek for &'a mut S { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -80,18 +83,20 @@ impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Read for Box { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -102,7 +107,7 @@ impl Read for Box { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Write for Box { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -120,12 +125,12 @@ impl Write for Box { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Seek for Box { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Box { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -151,7 +156,6 @@ impl BufRead for Box { + /// + /// Note that reading updates the slice to point to the yet unread part. + /// The slice will be empty when EOF is reached. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Read for &'a [u8] { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { +@@ -193,7 +197,7 @@ impl<'a> Read for &'a [u8] { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a> BufRead for &'a [u8] { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(*self) } +@@ -207,7 +211,6 @@ impl<'a> BufRead for &'a [u8] { + /// + /// Note that writing updates the slice to point to the yet unwritten part. + /// The slice will be empty when it has been completely overwritten. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for &'a mut [u8] { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -233,7 +236,7 @@ impl<'a> Write for &'a mut [u8] { + + /// Write is implemented for `Vec` by appending to the vector. + /// The vector will grow as needed. +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Write for Vec { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { +diff --git a/memchr.rs b/memchr.rs +index 3824a5f..312cf47 100644 +--- a/memchr.rs ++++ b/memchr.rs +@@ -11,10 +11,12 @@ + // Original implementation taken from rust-memchr + // Copyright 2015 Andrew Gallant, bluss and Nicolas Koch + ++pub use self::fallback::{memchr,memrchr}; ++ + #[allow(dead_code)] + pub mod fallback { +- use cmp; +- use mem; ++ use core::cmp; ++ use core::mem; + + const LO_U64: u64 = 0x0101010101010101; + const HI_U64: u64 = 0x8080808080808080; +diff --git a/mod.rs b/mod.rs +index ad9ae56..77d9ff1 100644 +--- a/mod.rs ++++ b/mod.rs +@@ -253,44 +253,34 @@ + //! [`try!`]: ../macro.try.html + //! [`read()`]: trait.Read.html#tymethod.read + +-#![stable(feature = "rust1", since = "1.0.0")] +- +-use cmp; ++use core::cmp; + use rustc_unicode::str as core_str; +-use error as std_error; +-use fmt; +-use result; +-use str; +-use memchr; +- +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::{BufReader, BufWriter, LineWriter}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::IntoInnerError; +-#[stable(feature = "rust1", since = "1.0.0")] ++use core::fmt; ++use core::iter::{Iterator}; ++use core::marker::Sized; ++#[cfg(feature="collections")] use core::ops::{Drop, FnOnce}; ++use core::option::Option::{self, Some, None}; ++use core::result::Result::{Ok, Err}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++use core::str; ++#[cfg(feature="collections")] use collections::vec::Vec; ++mod memchr; ++ ++#[cfg(feature="collections")] pub use self::buffered::{BufReader, BufWriter, LineWriter}; ++#[cfg(feature="collections")] pub use self::buffered::IntoInnerError; + pub use self::cursor::Cursor; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::error::{Result, Error, ErrorKind}; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::util::{copy, sink, Sink, empty, Empty, repeat, Repeat}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{stdin, stdout, stderr, _print, Stdin, Stdout, Stderr}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{StdoutLock, StderrLock, StdinLock}; +-#[unstable(feature = "libstd_io_internals", issue = "0")] +-#[doc(no_inline, hidden)] +-pub use self::stdio::{set_panic, set_print}; + + pub mod prelude; +-mod buffered; ++#[cfg(feature="collections")] mod buffered; + mod cursor; + mod error; + mod impls; +-mod lazy; + mod util; +-mod stdio; + +-const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; ++const DEFAULT_BUF_SIZE: usize = 8 * 1024; + + // A few methods below (read_to_string, read_line) will append data into a + // `String` buffer, but we need to be pretty careful when doing this. The +@@ -310,6 +300,7 @@ const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; + // 2. We're passing a raw buffer to the function `f`, and it is expected that + // the function only *appends* bytes to the buffer. We'll get undefined + // behavior if existing bytes are overwritten to have non-UTF-8 data. ++#[cfg(feature="collections")] + fn append_to_string(buf: &mut String, f: F) -> Result + where F: FnOnce(&mut Vec) -> Result + { +@@ -341,6 +332,7 @@ fn append_to_string(buf: &mut String, f: F) -> Result + // of data to return. Simply tacking on an extra DEFAULT_BUF_SIZE space every + // time is 4,500 times (!) slower than this if the reader has a very small + // amount of data to return. ++#[cfg(feature="collections")] + fn read_to_end(r: &mut R, buf: &mut Vec) -> Result { + let start_len = buf.len(); + let mut len = start_len; +@@ -423,7 +415,6 @@ fn read_to_end(r: &mut R, buf: &mut Vec) -> Result + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Read { + /// Pull some bytes from this source into the specified buffer, returning + /// how many bytes were read. +@@ -473,7 +464,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read(&mut self, buf: &mut [u8]) -> Result; + + /// Read all bytes until EOF in this source, placing them into `buf`. +@@ -515,7 +505,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_end(&mut self, buf: &mut Vec) -> Result { + read_to_end(self, buf) + } +@@ -553,7 +543,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_string(&mut self, buf: &mut String) -> Result { + // Note that we do *not* call `.read_to_end()` here. We are passing + // `&mut Vec` (the raw contents of `buf`) into the `read_to_end` +@@ -614,7 +604,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "read_exact", since = "1.6.0")] + fn read_exact(&mut self, mut buf: &mut [u8]) -> Result<()> { + while !buf.is_empty() { + match self.read(buf) { +@@ -666,7 +655,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + + /// Transforms this `Read` instance to an `Iterator` over its bytes. +@@ -696,7 +684,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn bytes(self) -> Bytes where Self: Sized { + Bytes { inner: self } + } +@@ -733,10 +720,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[unstable(feature = "io", reason = "the semantics of a partial read/write \ +- of where errors happen is currently \ +- unclear and may change", +- issue = "27802")] + fn chars(self) -> Chars where Self: Sized { + Chars { inner: self } + } +@@ -771,7 +754,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn chain(self, next: R) -> Chain where Self: Sized { + Chain { first: self, second: next, done_first: false } + } +@@ -805,7 +787,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn take(self, limit: u64) -> Take where Self: Sized { + Take { inner: self, limit: limit } + } +@@ -845,7 +826,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Write { + /// Write a buffer into this object, returning how many bytes were written. + /// +@@ -885,7 +865,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write(&mut self, buf: &[u8]) -> Result; + + /// Flush this output stream, ensuring that all intermediately buffered +@@ -911,7 +890,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn flush(&mut self) -> Result<()>; + + /// Attempts to write an entire buffer into this write. +@@ -938,7 +916,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_all(&mut self, mut buf: &[u8]) -> Result<()> { + while !buf.is_empty() { + match self.write(buf) { +@@ -990,7 +967,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_fmt(&mut self, fmt: fmt::Arguments) -> Result<()> { + // Create a shim which translates a Write to a fmt::Write and saves + // off I/O errors. instead of discarding them +@@ -1046,7 +1022,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + } + +@@ -1076,7 +1051,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Seek { + /// Seek to an offset, in bytes, in a stream. + /// +@@ -1092,7 +1066,6 @@ pub trait Seek { + /// Seeking to a negative offset is considered an error. + /// + /// [`SeekFrom::Start`]: enum.SeekFrom.html#variant.Start +- #[stable(feature = "rust1", since = "1.0.0")] + fn seek(&mut self, pos: SeekFrom) -> Result; + } + +@@ -1102,29 +1075,26 @@ pub trait Seek { + /// + /// [`Seek`]: trait.Seek.html + #[derive(Copy, PartialEq, Eq, Clone, Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub enum SeekFrom { + /// Set the offset to the provided number of bytes. +- #[stable(feature = "rust1", since = "1.0.0")] +- Start(#[stable(feature = "rust1", since = "1.0.0")] u64), ++ Start(u64), + + /// Set the offset to the size of this object plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- End(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ End(i64), + + /// Set the offset to the current position plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- Current(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ Current(i64), + } + ++#[cfg(feature="collections")] + fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + -> Result { + let mut read = 0; +@@ -1204,7 +1174,7 @@ fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + /// # } + /// ``` + /// +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub trait BufRead: Read { + /// Fills the internal buffer of this object, returning the buffer contents. + /// +@@ -1249,7 +1219,6 @@ pub trait BufRead: Read { + /// // ensure the bytes we worked with aren't returned again later + /// stdin.consume(length); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn fill_buf(&mut self) -> Result<&[u8]>; + + /// Tells this buffer that `amt` bytes have been consumed from the buffer, +@@ -1271,7 +1240,6 @@ pub trait BufRead: Read { + /// that method's example includes an example of `consume()`. + /// + /// [`fill_buf()`]: #tymethod.fill_buf +- #[stable(feature = "rust1", since = "1.0.0")] + fn consume(&mut self, amt: usize); + + /// Read all bytes into `buf` until the delimiter `byte` or EOF is reached. +@@ -1313,7 +1281,6 @@ pub trait BufRead: Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_until(&mut self, byte: u8, buf: &mut Vec) -> Result { + read_until(self, byte, buf) + } +@@ -1360,7 +1327,6 @@ pub trait BufRead: Read { + /// buffer.clear(); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_line(&mut self, buf: &mut String) -> Result { + // Note that we are not calling the `.read_until` method here, but + // rather our hardcoded implementation. For more details as to why, see +@@ -1397,7 +1363,6 @@ pub trait BufRead: Read { + /// println!("{:?}", content.unwrap()); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn split(self, byte: u8) -> Split where Self: Sized { + Split { buf: self, delim: byte } + } +@@ -1425,7 +1390,6 @@ pub trait BufRead: Read { + /// println!("{}", line.unwrap()); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn lines(self) -> Lines where Self: Sized { + Lines { buf: self } + } +@@ -1437,14 +1401,12 @@ pub trait BufRead: Read { + /// Please see the documentation of [`chain()`] for more details. + /// + /// [`chain()`]: trait.Read.html#method.chain +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Chain { + first: T, + second: U, + done_first: bool, + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Chain { + fn read(&mut self, buf: &mut [u8]) -> Result { + if !self.done_first { +@@ -1457,7 +1419,7 @@ impl Read for Chain { + } + } + +-#[stable(feature = "chain_bufread", since = "1.9.0")] ++#[cfg(feature="collections")] + impl BufRead for Chain { + fn fill_buf(&mut self) -> Result<&[u8]> { + if !self.done_first { +@@ -1484,7 +1446,6 @@ impl BufRead for Chain { + /// Please see the documentation of [`take()`] for more details. + /// + /// [`take()`]: trait.Read.html#method.take +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Take { + inner: T, + limit: u64, +@@ -1518,7 +1479,6 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn limit(&self) -> u64 { self.limit } + + /// Consumes the `Take`, returning the wrapped reader. +@@ -1543,13 +1503,11 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[unstable(feature = "io_take_into_inner", issue = "23755")] + pub fn into_inner(self) -> T { + self.inner + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Take { + fn read(&mut self, buf: &mut [u8]) -> Result { + // Don't call into inner reader at all at EOF because it may still block +@@ -1564,7 +1522,7 @@ impl Read for Take { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Take { + fn fill_buf(&mut self) -> Result<&[u8]> { + // Don't call into inner reader at all at EOF because it may still block +@@ -1603,12 +1561,10 @@ fn read_one_byte(reader: &mut Read) -> Option> { + /// Please see the documentation of [`bytes()`] for more details. + /// + /// [`bytes()`]: trait.Read.html#method.bytes +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Bytes { + inner: R, + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Iterator for Bytes { + type Item = Result; + +@@ -1623,8 +1579,6 @@ impl Iterator for Bytes { + /// Please see the documentation of `chars()` for more details. + /// + /// [chars]: trait.Read.html#method.chars +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + pub struct Chars { + inner: R, + } +@@ -1632,8 +1586,6 @@ pub struct Chars { + /// An enumeration of possible errors that can be generated from the `Chars` + /// adapter. + #[derive(Debug)] +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + pub enum CharsError { + /// Variant representing that the underlying stream was read successfully + /// but it did not contain valid utf8 data. +@@ -1643,8 +1595,6 @@ pub enum CharsError { + Other(Error), + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl Iterator for Chars { + type Item = result::Result; + +@@ -1676,25 +1626,6 @@ impl Iterator for Chars { + } + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] +-impl std_error::Error for CharsError { +- fn description(&self) -> &str { +- match *self { +- CharsError::NotUtf8 => "invalid utf8 encoding", +- CharsError::Other(ref e) => std_error::Error::description(e), +- } +- } +- fn cause(&self) -> Option<&std_error::Error> { +- match *self { +- CharsError::NotUtf8 => None, +- CharsError::Other(ref e) => e.cause(), +- } +- } +-} +- +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl fmt::Display for CharsError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + match *self { +@@ -1713,13 +1644,13 @@ impl fmt::Display for CharsError { + /// `BufRead`. Please see the documentation of `split()` for more details. + /// + /// [split]: trait.BufRead.html#method.split +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub struct Split { + buf: B, + delim: u8, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Split { + type Item = Result>; + +@@ -1744,12 +1675,12 @@ impl Iterator for Split { + /// `BufRead`. Please see the documentation of `lines()` for more details. + /// + /// [lines]: trait.BufRead.html#method.lines +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub struct Lines { + buf: B, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Lines { + type Item = Result; + +diff --git a/prelude.rs b/prelude.rs +index 8772d0f..49d66c9 100644 +--- a/prelude.rs ++++ b/prelude.rs +@@ -18,7 +18,8 @@ + //! use std::io::prelude::*; + //! ``` + +-#![stable(feature = "rust1", since = "1.0.0")] ++pub use super::{Read, Write, Seek}; ++#[cfg(feature="collections")] pub use super::BufRead; + +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use super::{Read, Write, BufRead, Seek}; ++#[cfg(feature="collections")] pub use alloc::boxed::Box; ++#[cfg(feature="collections")] pub use collections::vec::Vec; +diff --git a/util.rs b/util.rs +index 2c68802..93bcfc3 100644 +--- a/util.rs ++++ b/util.rs +@@ -10,7 +10,8 @@ + + #![allow(missing_copy_implementations)] + +-use io::{self, Read, Write, ErrorKind, BufRead}; ++use io::{self, Read, Write, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; + + /// Copies the entire contents of a reader into a writer. + /// +@@ -42,7 +43,6 @@ use io::{self, Read, Write, ErrorKind, BufRead}; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn copy(reader: &mut R, writer: &mut W) -> io::Result + where R: Read, W: Write + { +@@ -66,7 +66,6 @@ pub fn copy(reader: &mut R, writer: &mut W) -> io::Result< + /// the documentation of `empty()` for more details. + /// + /// [empty]: fn.empty.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Empty { _priv: () } + + /// Constructs a new handle to an empty reader. +@@ -84,14 +83,12 @@ pub struct Empty { _priv: () } + /// io::empty().read_to_string(&mut buffer).unwrap(); + /// assert!(buffer.is_empty()); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn empty() -> Empty { Empty { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Empty { + fn read(&mut self, _buf: &mut [u8]) -> io::Result { Ok(0) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Empty { + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(&[]) } + fn consume(&mut self, _n: usize) {} +@@ -103,7 +100,6 @@ impl BufRead for Empty { + /// see the documentation of `repeat()` for more details. + /// + /// [repeat]: fn.repeat.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Repeat { byte: u8 } + + /// Creates an instance of a reader that infinitely repeats one byte. +@@ -120,10 +116,8 @@ pub struct Repeat { byte: u8 } + /// io::repeat(0b101).read_exact(&mut buffer).unwrap(); + /// assert_eq!(buffer, [0b101, 0b101, 0b101]); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn repeat(byte: u8) -> Repeat { Repeat { byte: byte } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Repeat { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + for slot in &mut *buf { +@@ -139,7 +133,6 @@ impl Read for Repeat { + /// see the documentation of `sink()` for more details. + /// + /// [sink]: fn.sink.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Sink { _priv: () } + + /// Creates an instance of a writer which will successfully consume all data. +@@ -156,10 +149,8 @@ pub struct Sink { _priv: () } + /// let num_bytes = io::sink().write(&buffer).unwrap(); + /// assert_eq!(num_bytes, 5); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn sink() -> Sink { Sink { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for Sink { + fn write(&mut self, buf: &[u8]) -> io::Result { Ok(buf.len()) } + fn flush(&mut self) -> io::Result<()> { Ok(()) } diff --git a/patches/3c26ff450c914ab18e69b59777084eb101c65019.patch b/patches/3c26ff450c914ab18e69b59777084eb101c65019.patch new file mode 100644 index 0000000..7832458 --- /dev/null +++ b/patches/3c26ff450c914ab18e69b59777084eb101c65019.patch @@ -0,0 +1,1509 @@ +diff --git a/buffered.rs b/buffered.rs +index c15a1c8..e2ed487 100644 +--- a/buffered.rs ++++ b/buffered.rs +@@ -10,13 +10,13 @@ + + //! Buffering wrappers for I/O traits + ++use core::prelude::v1::*; + use io::prelude::*; + +-use cmp; +-use error; +-use fmt; ++use core::cmp; ++use core::fmt; + use io::{self, DEFAULT_BUF_SIZE, Error, ErrorKind, SeekFrom}; +-use memchr; ++use io::memchr; + + /// The `BufReader` struct adds buffering to any reader. + /// +@@ -46,7 +46,6 @@ use memchr; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufReader { + inner: R, + buf: Box<[u8]>, +@@ -69,7 +68,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: R) -> BufReader { + BufReader::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -90,7 +88,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: R) -> BufReader { + BufReader { + inner: inner, +@@ -118,7 +115,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &R { &self.inner } + + /// Gets a mutable reference to the underlying reader. +@@ -139,7 +135,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut R { &mut self.inner } + + /// Unwraps this `BufReader`, returning the underlying reader. +@@ -160,11 +155,9 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> R { self.inner } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for BufReader { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + // If we don't have any buffered data and we're doing a massive read +@@ -182,7 +175,6 @@ impl Read for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl BufRead for BufReader { + fn fill_buf(&mut self) -> io::Result<&[u8]> { + // If we've reached the end of our internal buffer then we need to fetch +@@ -202,7 +194,6 @@ impl BufRead for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufReader where R: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufReader") +@@ -212,7 +203,6 @@ impl fmt::Debug for BufReader where R: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufReader { + /// Seek to an offset, in bytes, in the underlying reader. + /// +@@ -305,7 +295,6 @@ impl Seek for BufReader { + /// [`Write`]: ../../std/io/trait.Write.html + /// [`write`]: ../../std/net/struct.TcpStream.html#method.write + /// [`TcpStream`]: ../../std/net/struct.TcpStream.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufWriter { + inner: Option, + buf: Vec, +@@ -340,7 +329,6 @@ pub struct BufWriter { + /// }; + /// ``` + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct IntoInnerError(W, Error); + + impl BufWriter { +@@ -354,7 +342,6 @@ impl BufWriter { + /// + /// let mut buffer = BufWriter::new(TcpStream::connect("127.0.0.1:34254").unwrap()); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> BufWriter { + BufWriter::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -372,7 +359,6 @@ impl BufWriter { + /// let stream = TcpStream::connect("127.0.0.1:34254").unwrap(); + /// let mut buffer = BufWriter::with_capacity(100, stream); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> BufWriter { + BufWriter { + inner: Some(inner), +@@ -421,7 +407,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.as_ref().unwrap() } + + /// Gets a mutable reference to the underlying writer. +@@ -439,7 +424,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.as_mut().unwrap() } + + /// Unwraps this `BufWriter`, returning the underlying writer. +@@ -457,7 +441,6 @@ impl BufWriter { + /// // unwrap the TcpStream and flush the buffer + /// let stream = buffer.into_inner().unwrap(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(mut self) -> Result>> { + match self.flush_buf() { + Err(e) => Err(IntoInnerError(self, e)), +@@ -466,7 +449,6 @@ impl BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for BufWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.buf.len() + buf.len() > self.buf.capacity() { +@@ -486,7 +468,6 @@ impl Write for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufWriter") +@@ -496,7 +477,6 @@ impl fmt::Debug for BufWriter where W: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufWriter { + /// Seek to the offset, in bytes, in the underlying writer. + /// +@@ -506,7 +486,6 @@ impl Seek for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Drop for BufWriter { + fn drop(&mut self) { + if self.inner.is_some() && !self.panicked { +@@ -545,7 +524,6 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn error(&self) -> &Error { &self.1 } + + /// Returns the buffered writer instance which generated the error. +@@ -578,23 +556,13 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> W { self.0 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl From> for Error { + fn from(iie: IntoInnerError) -> Error { iie.1 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for IntoInnerError { +- fn description(&self) -> &str { +- error::Error::description(self.error()) +- } +-} +- +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for IntoInnerError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.error().fmt(f) +@@ -649,7 +617,6 @@ impl fmt::Display for IntoInnerError { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct LineWriter { + inner: BufWriter, + need_flush: bool, +@@ -670,7 +637,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> LineWriter { + // Lines typically aren't that long, don't use a giant buffer + LineWriter::with_capacity(1024, inner) +@@ -691,7 +657,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> LineWriter { + LineWriter { + inner: BufWriter::with_capacity(cap, inner), +@@ -715,7 +680,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.get_ref() } + + /// Gets a mutable reference to the underlying writer. +@@ -738,7 +702,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.get_mut() } + + /// Unwraps this `LineWriter`, returning the underlying writer. +@@ -760,7 +723,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> Result>> { + self.inner.into_inner().map_err(|IntoInnerError(buf, e)| { + IntoInnerError(LineWriter { +@@ -771,7 +733,6 @@ impl LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for LineWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.need_flush { +@@ -816,7 +777,6 @@ impl Write for LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for LineWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("LineWriter") +diff --git a/cursor.rs b/cursor.rs +index 1b50233..6a7b44f 100644 +--- a/cursor.rs ++++ b/cursor.rs +@@ -8,10 +8,11 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + ++use core::prelude::v1::*; + use io::prelude::*; + +-use core::convert::TryInto; +-use cmp; ++#[cfg(feature = "collections")] use core::convert::TryInto; ++use core::cmp; + use io::{self, SeekFrom, Error, ErrorKind}; + + /// A `Cursor` wraps another type and provides it with a +@@ -79,7 +80,6 @@ use io::{self, SeekFrom, Error, ErrorKind}; + /// assert_eq!(&buff.get_ref()[5..15], &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]); + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Clone, Debug)] + pub struct Cursor { + inner: T, +@@ -98,7 +98,6 @@ impl Cursor { + /// # fn force_inference(_: &Cursor>) {} + /// # force_inference(&buff); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: T) -> Cursor { + Cursor { pos: 0, inner: inner } + } +@@ -116,7 +115,6 @@ impl Cursor { + /// + /// let vec = buff.into_inner(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> T { self.inner } + + /// Gets a reference to the underlying value in this cursor. +@@ -132,7 +130,6 @@ impl Cursor { + /// + /// let reference = buff.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &T { &self.inner } + + /// Gets a mutable reference to the underlying value in this cursor. +@@ -151,7 +148,6 @@ impl Cursor { + /// + /// let reference = buff.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut T { &mut self.inner } + + /// Returns the current position of this cursor. +@@ -173,7 +169,6 @@ impl Cursor { + /// buff.seek(SeekFrom::Current(-1)).unwrap(); + /// assert_eq!(buff.position(), 1); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn position(&self) -> u64 { self.pos } + + /// Sets the position of this cursor. +@@ -193,11 +188,9 @@ impl Cursor { + /// buff.set_position(4); + /// assert_eq!(buff.position(), 4); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn set_position(&mut self, pos: u64) { self.pos = pos; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl io::Seek for Cursor where T: AsRef<[u8]> { + fn seek(&mut self, style: SeekFrom) -> io::Result { + let pos = match style { +@@ -216,25 +209,27 @@ impl io::Seek for Cursor where T: AsRef<[u8]> { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Cursor where T: AsRef<[u8]> { + fn read(&mut self, buf: &mut [u8]) -> io::Result { +- let n = Read::read(&mut self.fill_buf()?, buf)?; ++ let n = Read::read(&mut self.get_buf()?, buf)?; + self.pos += n as u64; + Ok(n) + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl BufRead for Cursor where T: AsRef<[u8]> { +- fn fill_buf(&mut self) -> io::Result<&[u8]> { ++impl Cursor where T: AsRef<[u8]> { ++ fn get_buf(&mut self) -> io::Result<&[u8]> { + let amt = cmp::min(self.pos, self.inner.as_ref().len() as u64); + Ok(&self.inner.as_ref()[(amt as usize)..]) + } ++} ++ ++#[cfg(feature = "collections")] ++impl BufRead for Cursor where T: AsRef<[u8]> { ++ fn fill_buf(&mut self) -> io::Result<&[u8]> { self.get_buf() } + fn consume(&mut self, amt: usize) { self.pos += amt as u64; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for Cursor<&'a mut [u8]> { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -246,7 +241,7 @@ impl<'a> Write for Cursor<&'a mut [u8]> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature = "collections")] + impl Write for Cursor> { + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos: usize = self.position().try_into().map_err(|_| { +@@ -276,8 +271,8 @@ impl Write for Cursor> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "cursor_box_slice", since = "1.5.0")] +-impl Write for Cursor> { ++#[cfg(feature = "alloc")] ++impl Write for Cursor<::alloc::boxed::Box<[u8]>> { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos = cmp::min(self.pos, self.inner.len() as u64); +diff --git a/error.rs b/error.rs +index 795c89c..9a11eee 100644 +--- a/error.rs ++++ b/error.rs +@@ -8,11 +8,16 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use error; +-use fmt; +-use result; +-use sys; +-use convert::From; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++#[cfg(not(feature="alloc"))] use ::FakeBox as Box; ++use core::convert::Into; ++use core::fmt; ++use core::marker::{Send, Sync}; ++use core::option::Option::{self, Some, None}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(not(feature="collections"))] use ::ErrorString as String; ++use core::convert::From; + + /// A specialized [`Result`](../result/enum.Result.html) type for I/O + /// operations. +@@ -44,7 +49,6 @@ use convert::From; + /// Ok(buffer) + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub type Result = result::Result; + + /// The error type for I/O operations of the `Read`, `Write`, `Seek`, and +@@ -56,7 +60,6 @@ pub type Result = result::Result; + /// + /// [`ErrorKind`]: enum.ErrorKind.html + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Error { + repr: Repr, + } +@@ -64,13 +67,16 @@ pub struct Error { + enum Repr { + Os(i32), + Simple(ErrorKind), ++ #[cfg(feature="alloc")] + Custom(Box), ++ #[cfg(not(feature="alloc"))] ++ Custom(Custom), + } + + #[derive(Debug)] + struct Custom { + kind: ErrorKind, +- error: Box, ++ error: String, + } + + /// A list specifying general categories of I/O error. +@@ -82,47 +88,34 @@ struct Custom { + /// + /// [`io::Error`]: struct.Error.html + #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)] +-#[stable(feature = "rust1", since = "1.0.0")] + #[allow(deprecated)] + pub enum ErrorKind { + /// An entity was not found, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + NotFound, + /// The operation lacked the necessary privileges to complete. +- #[stable(feature = "rust1", since = "1.0.0")] + PermissionDenied, + /// The connection was refused by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionRefused, + /// The connection was reset by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionReset, + /// The connection was aborted (terminated) by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionAborted, + /// The network operation failed because it was not connected yet. +- #[stable(feature = "rust1", since = "1.0.0")] + NotConnected, + /// A socket address could not be bound because the address is already in + /// use elsewhere. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrInUse, + /// A nonexistent interface was requested or the requested address was not + /// local. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrNotAvailable, + /// The operation failed because a pipe was closed. +- #[stable(feature = "rust1", since = "1.0.0")] + BrokenPipe, + /// An entity already exists, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + AlreadyExists, + /// The operation needs to block to complete, but the blocking operation was + /// requested to not occur. +- #[stable(feature = "rust1", since = "1.0.0")] + WouldBlock, + /// A parameter was incorrect. +- #[stable(feature = "rust1", since = "1.0.0")] + InvalidInput, + /// Data not valid for the operation were encountered. + /// +@@ -134,10 +127,8 @@ pub enum ErrorKind { + /// `InvalidData` if the file's contents are not valid UTF-8. + /// + /// [`InvalidInput`]: #variant.InvalidInput +- #[stable(feature = "io_invalid_data", since = "1.2.0")] + InvalidData, + /// The I/O operation's timeout expired, causing it to be canceled. +- #[stable(feature = "rust1", since = "1.0.0")] + TimedOut, + /// An error returned when an operation could not be completed because a + /// call to [`write()`] returned [`Ok(0)`]. +@@ -148,15 +139,12 @@ pub enum ErrorKind { + /// + /// [`write()`]: ../../std/io/trait.Write.html#tymethod.write + /// [`Ok(0)`]: ../../std/io/type.Result.html +- #[stable(feature = "rust1", since = "1.0.0")] + WriteZero, + /// This operation was interrupted. + /// + /// Interrupted operations can typically be retried. +- #[stable(feature = "rust1", since = "1.0.0")] + Interrupted, + /// Any I/O error not part of this list. +- #[stable(feature = "rust1", since = "1.0.0")] + Other, + + /// An error returned when an operation could not be completed because an +@@ -165,15 +153,10 @@ pub enum ErrorKind { + /// This typically means that an operation could only succeed if it read a + /// particular number of bytes but only a smaller number of bytes could be + /// read. +- #[stable(feature = "read_exact", since = "1.6.0")] + UnexpectedEof, + + /// A marker variant that tells the compiler that users of this enum cannot + /// match it exhaustively. +- #[unstable(feature = "io_error_internals", +- reason = "better expressed through extensible enums that this \ +- enum cannot be exhaustively matched against", +- issue = "0")] + #[doc(hidden)] + __Nonexhaustive, + } +@@ -206,7 +189,6 @@ impl ErrorKind { + + /// Intended for use for errors not exposed to the user, where allocating onto + /// the heap (for normal construction via Error::new) is too costly. +-#[stable(feature = "io_error_from_errorkind", since = "1.14.0")] + impl From for Error { + fn from(kind: ErrorKind) -> Error { + Error { +@@ -234,14 +216,13 @@ impl Error { + /// // errors can also be created from other errors + /// let custom_error2 = Error::new(ErrorKind::Interrupted, custom_error); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(kind: ErrorKind, error: E) -> Error +- where E: Into> ++ where E: Into + { + Self::_new(kind, error.into()) + } + +- fn _new(kind: ErrorKind, error: Box) -> Error { ++ fn _new(kind: ErrorKind, error: String) -> Error { + Error { + repr: Repr::Custom(Box::new(Custom { + kind: kind, +@@ -250,24 +231,6 @@ impl Error { + } + } + +- /// Returns an error representing the last OS error which occurred. +- /// +- /// This function reads the value of `errno` for the target platform (e.g. +- /// `GetLastError` on Windows) and will return a corresponding instance of +- /// `Error` for the error code. +- /// +- /// # Examples +- /// +- /// ``` +- /// use std::io::Error; +- /// +- /// println!("last OS error: {:?}", Error::last_os_error()); +- /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] +- pub fn last_os_error() -> Error { +- Error::from_raw_os_error(sys::os::errno() as i32) +- } +- + /// Creates a new instance of an `Error` from a particular OS error code. + /// + /// # Examples +@@ -293,7 +256,6 @@ impl Error { + /// assert_eq!(error.kind(), io::ErrorKind::AddrInUse); + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn from_raw_os_error(code: i32) -> Error { + Error { repr: Repr::Os(code) } + } +@@ -324,7 +286,6 @@ impl Error { + /// print_os_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn raw_os_error(&self) -> Option { + match self.repr { + Repr::Os(i) => Some(i), +@@ -358,12 +319,11 @@ impl Error { + /// print_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_ref(&self) -> Option<&(error::Error+Send+Sync+'static)> { ++ pub fn get_ref(&self) -> Option<&String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref c) => Some(&*c.error), ++ Repr::Custom(ref c) => Some(&c.error), + } + } + +@@ -429,12 +389,11 @@ impl Error { + /// print_error(&change_error(Error::new(ErrorKind::Other, MyError::new()))); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_mut(&mut self) -> Option<&mut (error::Error+Send+Sync+'static)> { ++ pub fn get_mut(&mut self) -> Option<&mut String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref mut c) => Some(&mut *c.error), ++ Repr::Custom(ref mut c) => Some(&mut c.error), + } + } + +@@ -463,8 +422,7 @@ impl Error { + /// print_error(Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn into_inner(self) -> Option> { ++ pub fn into_inner(self) -> Option { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +@@ -490,10 +448,9 @@ impl Error { + /// print_error(Error::new(ErrorKind::AddrInUse, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn kind(&self) -> ErrorKind { + match self.repr { +- Repr::Os(code) => sys::decode_error_kind(code), ++ Repr::Os(_code) => ErrorKind::Other, + Repr::Custom(ref c) => c.kind, + Repr::Simple(kind) => kind, + } +@@ -504,21 +461,18 @@ impl fmt::Debug for Repr { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match *self { + Repr::Os(ref code) => +- fmt.debug_struct("Os").field("code", code) +- .field("message", &sys::os::error_string(*code)).finish(), ++ fmt.debug_struct("Os").field("code", code).finish(), + Repr::Custom(ref c) => fmt.debug_tuple("Custom").field(c).finish(), + Repr::Simple(kind) => fmt.debug_tuple("Kind").field(&kind).finish(), + } + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for Error { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match self.repr { + Repr::Os(code) => { +- let detail = sys::os::error_string(code); +- write!(fmt, "{} (os error {})", detail, code) ++ write!(fmt, "os error {}", code) + } + Repr::Custom(ref c) => c.error.fmt(fmt), + Repr::Simple(kind) => write!(fmt, "{}", kind.as_str()), +@@ -526,24 +480,6 @@ impl fmt::Display for Error { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for Error { +- fn description(&self) -> &str { +- match self.repr { +- Repr::Os(..) | Repr::Simple(..) => self.kind().as_str(), +- Repr::Custom(ref c) => c.error.description(), +- } +- } +- +- fn cause(&self) -> Option<&error::Error> { +- match self.repr { +- Repr::Os(..) => None, +- Repr::Simple(..) => None, +- Repr::Custom(ref c) => c.error.cause(), +- } +- } +-} +- + fn _assert_error_is_sync_send() { + fn _is_sync_send() {} + _is_sync_send::(); +diff --git a/impls.rs b/impls.rs +index f691289..c4374d3 100644 +--- a/impls.rs ++++ b/impls.rs +@@ -8,26 +8,31 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use cmp; +-use io::{self, SeekFrom, Read, Write, Seek, BufRead, Error, ErrorKind}; +-use fmt; +-use mem; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++use core::cmp; ++use io::{self, SeekFrom, Read, Write, Seek, Error, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; ++use core::fmt; ++use core::mem; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(feature="collections")] use collections::vec::Vec; + + // ============================================================================= + // Forwarding implementations + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, R: Read + ?Sized> Read for &'a mut R { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -38,7 +43,6 @@ impl<'a, R: Read + ?Sized> Read for &'a mut R { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, W: Write + ?Sized> Write for &'a mut W { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -56,12 +60,11 @@ impl<'a, W: Write + ?Sized> Write for &'a mut W { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, S: Seek + ?Sized> Seek for &'a mut S { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -80,18 +83,20 @@ impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Read for Box { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -102,7 +107,7 @@ impl Read for Box { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Write for Box { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -120,12 +125,12 @@ impl Write for Box { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Seek for Box { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Box { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -151,7 +156,6 @@ impl BufRead for Box { + /// + /// Note that reading updates the slice to point to the yet unread part. + /// The slice will be empty when EOF is reached. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Read for &'a [u8] { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { +@@ -193,7 +197,7 @@ impl<'a> Read for &'a [u8] { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a> BufRead for &'a [u8] { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(*self) } +@@ -207,7 +211,6 @@ impl<'a> BufRead for &'a [u8] { + /// + /// Note that writing updates the slice to point to the yet unwritten part. + /// The slice will be empty when it has been completely overwritten. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for &'a mut [u8] { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -233,7 +236,7 @@ impl<'a> Write for &'a mut [u8] { + + /// Write is implemented for `Vec` by appending to the vector. + /// The vector will grow as needed. +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Write for Vec { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { +diff --git a/memchr.rs b/memchr.rs +index 3824a5f..312cf47 100644 +--- a/memchr.rs ++++ b/memchr.rs +@@ -11,10 +11,12 @@ + // Original implementation taken from rust-memchr + // Copyright 2015 Andrew Gallant, bluss and Nicolas Koch + ++pub use self::fallback::{memchr,memrchr}; ++ + #[allow(dead_code)] + pub mod fallback { +- use cmp; +- use mem; ++ use core::cmp; ++ use core::mem; + + const LO_U64: u64 = 0x0101010101010101; + const HI_U64: u64 = 0x8080808080808080; +diff --git a/mod.rs b/mod.rs +index 5450a10..f57ce3a 100644 +--- a/mod.rs ++++ b/mod.rs +@@ -253,44 +253,34 @@ + //! [`try!`]: ../macro.try.html + //! [`read()`]: trait.Read.html#tymethod.read + +-#![stable(feature = "rust1", since = "1.0.0")] +- +-use cmp; ++use core::cmp; + use std_unicode::str as core_str; +-use error as std_error; +-use fmt; +-use result; +-use str; +-use memchr; +- +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::{BufReader, BufWriter, LineWriter}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::IntoInnerError; +-#[stable(feature = "rust1", since = "1.0.0")] ++use core::fmt; ++use core::iter::{Iterator}; ++use core::marker::Sized; ++#[cfg(feature="collections")] use core::ops::{Drop, FnOnce}; ++use core::option::Option::{self, Some, None}; ++use core::result::Result::{Ok, Err}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++use core::str; ++#[cfg(feature="collections")] use collections::vec::Vec; ++mod memchr; ++ ++#[cfg(feature="collections")] pub use self::buffered::{BufReader, BufWriter, LineWriter}; ++#[cfg(feature="collections")] pub use self::buffered::IntoInnerError; + pub use self::cursor::Cursor; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::error::{Result, Error, ErrorKind}; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::util::{copy, sink, Sink, empty, Empty, repeat, Repeat}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{stdin, stdout, stderr, _print, Stdin, Stdout, Stderr}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{StdoutLock, StderrLock, StdinLock}; +-#[unstable(feature = "libstd_io_internals", issue = "0")] +-#[doc(no_inline, hidden)] +-pub use self::stdio::{set_panic, set_print}; + + pub mod prelude; +-mod buffered; ++#[cfg(feature="collections")] mod buffered; + mod cursor; + mod error; + mod impls; +-mod lazy; + mod util; +-mod stdio; + +-const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; ++const DEFAULT_BUF_SIZE: usize = 8 * 1024; + + // A few methods below (read_to_string, read_line) will append data into a + // `String` buffer, but we need to be pretty careful when doing this. The +@@ -310,6 +300,7 @@ const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; + // 2. We're passing a raw buffer to the function `f`, and it is expected that + // the function only *appends* bytes to the buffer. We'll get undefined + // behavior if existing bytes are overwritten to have non-UTF-8 data. ++#[cfg(feature="collections")] + fn append_to_string(buf: &mut String, f: F) -> Result + where F: FnOnce(&mut Vec) -> Result + { +@@ -341,6 +332,7 @@ fn append_to_string(buf: &mut String, f: F) -> Result + // of data to return. Simply tacking on an extra DEFAULT_BUF_SIZE space every + // time is 4,500 times (!) slower than this if the reader has a very small + // amount of data to return. ++#[cfg(feature="collections")] + fn read_to_end(r: &mut R, buf: &mut Vec) -> Result { + let start_len = buf.len(); + let mut len = start_len; +@@ -423,7 +415,6 @@ fn read_to_end(r: &mut R, buf: &mut Vec) -> Result + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Read { + /// Pull some bytes from this source into the specified buffer, returning + /// how many bytes were read. +@@ -473,7 +464,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read(&mut self, buf: &mut [u8]) -> Result; + + /// Read all bytes until EOF in this source, placing them into `buf`. +@@ -515,7 +505,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_end(&mut self, buf: &mut Vec) -> Result { + read_to_end(self, buf) + } +@@ -553,7 +543,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_string(&mut self, buf: &mut String) -> Result { + // Note that we do *not* call `.read_to_end()` here. We are passing + // `&mut Vec` (the raw contents of `buf`) into the `read_to_end` +@@ -614,7 +604,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "read_exact", since = "1.6.0")] + fn read_exact(&mut self, mut buf: &mut [u8]) -> Result<()> { + while !buf.is_empty() { + match self.read(buf) { +@@ -666,7 +655,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + + /// Transforms this `Read` instance to an `Iterator` over its bytes. +@@ -696,7 +684,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn bytes(self) -> Bytes where Self: Sized { + Bytes { inner: self } + } +@@ -733,10 +720,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[unstable(feature = "io", reason = "the semantics of a partial read/write \ +- of where errors happen is currently \ +- unclear and may change", +- issue = "27802")] + fn chars(self) -> Chars where Self: Sized { + Chars { inner: self } + } +@@ -771,7 +754,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn chain(self, next: R) -> Chain where Self: Sized { + Chain { first: self, second: next, done_first: false } + } +@@ -805,7 +787,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn take(self, limit: u64) -> Take where Self: Sized { + Take { inner: self, limit: limit } + } +@@ -845,7 +826,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Write { + /// Write a buffer into this object, returning how many bytes were written. + /// +@@ -885,7 +865,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write(&mut self, buf: &[u8]) -> Result; + + /// Flush this output stream, ensuring that all intermediately buffered +@@ -911,7 +890,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn flush(&mut self) -> Result<()>; + + /// Attempts to write an entire buffer into this write. +@@ -938,7 +916,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_all(&mut self, mut buf: &[u8]) -> Result<()> { + while !buf.is_empty() { + match self.write(buf) { +@@ -990,7 +967,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_fmt(&mut self, fmt: fmt::Arguments) -> Result<()> { + // Create a shim which translates a Write to a fmt::Write and saves + // off I/O errors. instead of discarding them +@@ -1046,7 +1022,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + } + +@@ -1076,7 +1051,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Seek { + /// Seek to an offset, in bytes, in a stream. + /// +@@ -1092,7 +1066,6 @@ pub trait Seek { + /// Seeking to a negative offset is considered an error. + /// + /// [`SeekFrom::Start`]: enum.SeekFrom.html#variant.Start +- #[stable(feature = "rust1", since = "1.0.0")] + fn seek(&mut self, pos: SeekFrom) -> Result; + } + +@@ -1102,29 +1075,26 @@ pub trait Seek { + /// + /// [`Seek`]: trait.Seek.html + #[derive(Copy, PartialEq, Eq, Clone, Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub enum SeekFrom { + /// Set the offset to the provided number of bytes. +- #[stable(feature = "rust1", since = "1.0.0")] +- Start(#[stable(feature = "rust1", since = "1.0.0")] u64), ++ Start(u64), + + /// Set the offset to the size of this object plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- End(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ End(i64), + + /// Set the offset to the current position plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- Current(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ Current(i64), + } + ++#[cfg(feature="collections")] + fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + -> Result { + let mut read = 0; +@@ -1204,7 +1174,7 @@ fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + /// # } + /// ``` + /// +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub trait BufRead: Read { + /// Fills the internal buffer of this object, returning the buffer contents. + /// +@@ -1249,7 +1219,6 @@ pub trait BufRead: Read { + /// // ensure the bytes we worked with aren't returned again later + /// stdin.consume(length); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn fill_buf(&mut self) -> Result<&[u8]>; + + /// Tells this buffer that `amt` bytes have been consumed from the buffer, +@@ -1271,7 +1240,6 @@ pub trait BufRead: Read { + /// that method's example includes an example of `consume()`. + /// + /// [`fill_buf()`]: #tymethod.fill_buf +- #[stable(feature = "rust1", since = "1.0.0")] + fn consume(&mut self, amt: usize); + + /// Read all bytes into `buf` until the delimiter `byte` or EOF is reached. +@@ -1313,7 +1281,6 @@ pub trait BufRead: Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_until(&mut self, byte: u8, buf: &mut Vec) -> Result { + read_until(self, byte, buf) + } +@@ -1360,7 +1327,6 @@ pub trait BufRead: Read { + /// buffer.clear(); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_line(&mut self, buf: &mut String) -> Result { + // Note that we are not calling the `.read_until` method here, but + // rather our hardcoded implementation. For more details as to why, see +@@ -1397,7 +1363,6 @@ pub trait BufRead: Read { + /// println!("{:?}", content.unwrap()); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn split(self, byte: u8) -> Split where Self: Sized { + Split { buf: self, delim: byte } + } +@@ -1431,7 +1396,6 @@ pub trait BufRead: Read { + /// Each line of the iterator has the same error semantics as [`BufRead::read_line()`]. + /// + /// [`BufRead::read_line()`]: trait.BufRead.html#method.read_line +- #[stable(feature = "rust1", since = "1.0.0")] + fn lines(self) -> Lines where Self: Sized { + Lines { buf: self } + } +@@ -1443,14 +1407,12 @@ pub trait BufRead: Read { + /// Please see the documentation of [`chain()`] for more details. + /// + /// [`chain()`]: trait.Read.html#method.chain +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Chain { + first: T, + second: U, + done_first: bool, + } + +-#[stable(feature = "std_debug", since = "1.15.0")] + impl fmt::Debug for Chain { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.debug_struct("Chain") +@@ -1460,7 +1422,6 @@ impl fmt::Debug for Chain { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Chain { + fn read(&mut self, buf: &mut [u8]) -> Result { + if !self.done_first { +@@ -1473,7 +1434,7 @@ impl Read for Chain { + } + } + +-#[stable(feature = "chain_bufread", since = "1.9.0")] ++#[cfg(feature="collections")] + impl BufRead for Chain { + fn fill_buf(&mut self) -> Result<&[u8]> { + if !self.done_first { +@@ -1500,7 +1461,6 @@ impl BufRead for Chain { + /// Please see the documentation of [`take()`] for more details. + /// + /// [`take()`]: trait.Read.html#method.take +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Debug)] + pub struct Take { + inner: T, +@@ -1535,7 +1495,6 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn limit(&self) -> u64 { self.limit } + + /// Consumes the `Take`, returning the wrapped reader. +@@ -1558,13 +1517,11 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "io_take_into_inner", since = "1.15.0")] + pub fn into_inner(self) -> T { + self.inner + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Take { + fn read(&mut self, buf: &mut [u8]) -> Result { + // Don't call into inner reader at all at EOF because it may still block +@@ -1579,7 +1536,7 @@ impl Read for Take { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Take { + fn fill_buf(&mut self) -> Result<&[u8]> { + // Don't call into inner reader at all at EOF because it may still block +@@ -1618,13 +1575,11 @@ fn read_one_byte(reader: &mut Read) -> Option> { + /// Please see the documentation of [`bytes()`] for more details. + /// + /// [`bytes()`]: trait.Read.html#method.bytes +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Debug)] + pub struct Bytes { + inner: R, + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Iterator for Bytes { + type Item = Result; + +@@ -1639,8 +1594,6 @@ impl Iterator for Bytes { + /// Please see the documentation of `chars()` for more details. + /// + /// [chars]: trait.Read.html#method.chars +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + #[derive(Debug)] + pub struct Chars { + inner: R, +@@ -1649,8 +1602,6 @@ pub struct Chars { + /// An enumeration of possible errors that can be generated from the `Chars` + /// adapter. + #[derive(Debug)] +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + pub enum CharsError { + /// Variant representing that the underlying stream was read successfully + /// but it did not contain valid utf8 data. +@@ -1660,8 +1611,6 @@ pub enum CharsError { + Other(Error), + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl Iterator for Chars { + type Item = result::Result; + +@@ -1693,25 +1642,6 @@ impl Iterator for Chars { + } + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] +-impl std_error::Error for CharsError { +- fn description(&self) -> &str { +- match *self { +- CharsError::NotUtf8 => "invalid utf8 encoding", +- CharsError::Other(ref e) => std_error::Error::description(e), +- } +- } +- fn cause(&self) -> Option<&std_error::Error> { +- match *self { +- CharsError::NotUtf8 => None, +- CharsError::Other(ref e) => e.cause(), +- } +- } +-} +- +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl fmt::Display for CharsError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + match *self { +@@ -1730,14 +1660,14 @@ impl fmt::Display for CharsError { + /// `BufRead`. Please see the documentation of `split()` for more details. + /// + /// [split]: trait.BufRead.html#method.split +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + #[derive(Debug)] + pub struct Split { + buf: B, + delim: u8, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Split { + type Item = Result>; + +@@ -1762,13 +1692,13 @@ impl Iterator for Split { + /// `BufRead`. Please see the documentation of `lines()` for more details. + /// + /// [lines]: trait.BufRead.html#method.lines +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + #[derive(Debug)] + pub struct Lines { + buf: B, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Lines { + type Item = Result; + +diff --git a/prelude.rs b/prelude.rs +index 8772d0f..49d66c9 100644 +--- a/prelude.rs ++++ b/prelude.rs +@@ -18,7 +18,8 @@ + //! use std::io::prelude::*; + //! ``` + +-#![stable(feature = "rust1", since = "1.0.0")] ++pub use super::{Read, Write, Seek}; ++#[cfg(feature="collections")] pub use super::BufRead; + +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use super::{Read, Write, BufRead, Seek}; ++#[cfg(feature="collections")] pub use alloc::boxed::Box; ++#[cfg(feature="collections")] pub use collections::vec::Vec; +diff --git a/util.rs b/util.rs +index 4365110..088b54c 100644 +--- a/util.rs ++++ b/util.rs +@@ -10,8 +10,9 @@ + + #![allow(missing_copy_implementations)] + +-use fmt; +-use io::{self, Read, Write, ErrorKind, BufRead}; ++use core::fmt; ++use io::{self, Read, Write, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; + + /// Copies the entire contents of a reader into a writer. + /// +@@ -43,7 +44,6 @@ use io::{self, Read, Write, ErrorKind, BufRead}; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn copy(reader: &mut R, writer: &mut W) -> io::Result + where R: Read, W: Write + { +@@ -67,7 +67,6 @@ pub fn copy(reader: &mut R, writer: &mut W) -> io::Result< + /// the documentation of `empty()` for more details. + /// + /// [empty]: fn.empty.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Empty { _priv: () } + + /// Constructs a new handle to an empty reader. +@@ -85,20 +84,17 @@ pub struct Empty { _priv: () } + /// io::empty().read_to_string(&mut buffer).unwrap(); + /// assert!(buffer.is_empty()); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn empty() -> Empty { Empty { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Empty { + fn read(&mut self, _buf: &mut [u8]) -> io::Result { Ok(0) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Empty { + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(&[]) } + fn consume(&mut self, _n: usize) {} + } + +-#[stable(feature = "std_debug", since = "1.15.0")] + impl fmt::Debug for Empty { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Empty { .. }") +@@ -111,7 +107,6 @@ impl fmt::Debug for Empty { + /// see the documentation of `repeat()` for more details. + /// + /// [repeat]: fn.repeat.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Repeat { byte: u8 } + + /// Creates an instance of a reader that infinitely repeats one byte. +@@ -128,10 +123,8 @@ pub struct Repeat { byte: u8 } + /// io::repeat(0b101).read_exact(&mut buffer).unwrap(); + /// assert_eq!(buffer, [0b101, 0b101, 0b101]); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn repeat(byte: u8) -> Repeat { Repeat { byte: byte } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Repeat { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + for slot in &mut *buf { +@@ -141,7 +134,6 @@ impl Read for Repeat { + } + } + +-#[stable(feature = "std_debug", since = "1.15.0")] + impl fmt::Debug for Repeat { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Repeat { .. }") +@@ -154,7 +146,6 @@ impl fmt::Debug for Repeat { + /// see the documentation of `sink()` for more details. + /// + /// [sink]: fn.sink.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Sink { _priv: () } + + /// Creates an instance of a writer which will successfully consume all data. +@@ -171,16 +162,13 @@ pub struct Sink { _priv: () } + /// let num_bytes = io::sink().write(&buffer).unwrap(); + /// assert_eq!(num_bytes, 5); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn sink() -> Sink { Sink { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for Sink { + fn write(&mut self, buf: &[u8]) -> io::Result { Ok(buf.len()) } + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "std_debug", since = "1.15.0")] + impl fmt::Debug for Sink { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Sink { .. }") diff --git a/patches/6edab01499c2af1b04e5914a64f0e66ae50253c3.patch b/patches/6edab01499c2af1b04e5914a64f0e66ae50253c3.patch new file mode 100644 index 0000000..22e62e4 --- /dev/null +++ b/patches/6edab01499c2af1b04e5914a64f0e66ae50253c3.patch @@ -0,0 +1,1510 @@ +diff --git a/buffered.rs b/buffered.rs +index f98a3a8..1601229 100644 +--- a/buffered.rs ++++ b/buffered.rs +@@ -10,13 +10,13 @@ + + //! Buffering wrappers for I/O traits + ++use core::prelude::v1::*; + use io::prelude::*; + +-use cmp; +-use error; +-use fmt; ++use core::cmp; ++use core::fmt; + use io::{self, DEFAULT_BUF_SIZE, Error, ErrorKind, SeekFrom}; +-use memchr; ++use io::memchr; + + /// The `BufReader` struct adds buffering to any reader. + /// +@@ -46,7 +46,6 @@ use memchr; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufReader { + inner: R, + buf: Box<[u8]>, +@@ -69,7 +68,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: R) -> BufReader { + BufReader::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -90,7 +88,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: R) -> BufReader { + BufReader { + inner: inner, +@@ -118,7 +115,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &R { &self.inner } + + /// Gets a mutable reference to the underlying reader. +@@ -139,7 +135,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut R { &mut self.inner } + + /// Unwraps this `BufReader`, returning the underlying reader. +@@ -160,11 +155,9 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> R { self.inner } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for BufReader { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + // If we don't have any buffered data and we're doing a massive read +@@ -182,7 +175,6 @@ impl Read for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl BufRead for BufReader { + fn fill_buf(&mut self) -> io::Result<&[u8]> { + // If we've reached the end of our internal buffer then we need to fetch +@@ -202,7 +194,6 @@ impl BufRead for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufReader where R: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufReader") +@@ -212,7 +203,6 @@ impl fmt::Debug for BufReader where R: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufReader { + /// Seek to an offset, in bytes, in the underlying reader. + /// +@@ -305,7 +295,6 @@ impl Seek for BufReader { + /// [`Write`]: ../../std/io/trait.Write.html + /// [`write`]: ../../std/net/struct.TcpStream.html#method.write + /// [`TcpStream`]: ../../std/net/struct.TcpStream.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufWriter { + inner: Option, + buf: Vec, +@@ -340,7 +329,6 @@ pub struct BufWriter { + /// }; + /// ``` + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct IntoInnerError(W, Error); + + impl BufWriter { +@@ -354,7 +342,6 @@ impl BufWriter { + /// + /// let mut buffer = BufWriter::new(TcpStream::connect("127.0.0.1:34254").unwrap()); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> BufWriter { + BufWriter::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -372,7 +359,6 @@ impl BufWriter { + /// let stream = TcpStream::connect("127.0.0.1:34254").unwrap(); + /// let mut buffer = BufWriter::with_capacity(100, stream); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> BufWriter { + BufWriter { + inner: Some(inner), +@@ -421,7 +407,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.as_ref().unwrap() } + + /// Gets a mutable reference to the underlying writer. +@@ -439,7 +424,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.as_mut().unwrap() } + + /// Unwraps this `BufWriter`, returning the underlying writer. +@@ -457,7 +441,6 @@ impl BufWriter { + /// // unwrap the TcpStream and flush the buffer + /// let stream = buffer.into_inner().unwrap(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(mut self) -> Result>> { + match self.flush_buf() { + Err(e) => Err(IntoInnerError(self, e)), +@@ -466,7 +449,6 @@ impl BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for BufWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.buf.len() + buf.len() > self.buf.capacity() { +@@ -486,7 +468,6 @@ impl Write for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufWriter") +@@ -496,7 +477,6 @@ impl fmt::Debug for BufWriter where W: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufWriter { + /// Seek to the offset, in bytes, in the underlying writer. + /// +@@ -506,7 +486,6 @@ impl Seek for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Drop for BufWriter { + fn drop(&mut self) { + if self.inner.is_some() && !self.panicked { +@@ -545,7 +524,6 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn error(&self) -> &Error { &self.1 } + + /// Returns the buffered writer instance which generated the error. +@@ -578,23 +556,13 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> W { self.0 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl From> for Error { + fn from(iie: IntoInnerError) -> Error { iie.1 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for IntoInnerError { +- fn description(&self) -> &str { +- error::Error::description(self.error()) +- } +-} +- +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for IntoInnerError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.error().fmt(f) +@@ -649,7 +617,6 @@ impl fmt::Display for IntoInnerError { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct LineWriter { + inner: BufWriter, + need_flush: bool, +@@ -670,7 +637,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> LineWriter { + // Lines typically aren't that long, don't use a giant buffer + LineWriter::with_capacity(1024, inner) +@@ -691,7 +657,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> LineWriter { + LineWriter { + inner: BufWriter::with_capacity(cap, inner), +@@ -715,7 +680,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.get_ref() } + + /// Gets a mutable reference to the underlying writer. +@@ -738,7 +702,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.get_mut() } + + /// Unwraps this `LineWriter`, returning the underlying writer. +@@ -760,7 +723,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> Result>> { + self.inner.into_inner().map_err(|IntoInnerError(buf, e)| { + IntoInnerError(LineWriter { +@@ -771,7 +733,6 @@ impl LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for LineWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.need_flush { +@@ -816,7 +777,6 @@ impl Write for LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for LineWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("LineWriter") +diff --git a/cursor.rs b/cursor.rs +index 53347eb..637f4e0 100644 +--- a/cursor.rs ++++ b/cursor.rs +@@ -8,10 +8,11 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + ++use core::prelude::v1::*; + use io::prelude::*; + +-use core::convert::TryInto; +-use cmp; ++#[cfg(feature = "collections")] use core::convert::TryInto; ++use core::cmp; + use io::{self, SeekFrom, Error, ErrorKind}; + + /// A `Cursor` wraps another type and provides it with a +@@ -79,7 +80,6 @@ use io::{self, SeekFrom, Error, ErrorKind}; + /// assert_eq!(&buff.get_ref()[5..15], &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]); + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Clone, Debug)] + pub struct Cursor { + inner: T, +@@ -102,7 +102,6 @@ impl Cursor { + /// # fn force_inference(_: &Cursor>) {} + /// # force_inference(&buff); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: T) -> Cursor { + Cursor { pos: 0, inner: inner } + } +@@ -120,7 +119,6 @@ impl Cursor { + /// + /// let vec = buff.into_inner(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> T { self.inner } + + /// Gets a reference to the underlying value in this cursor. +@@ -136,7 +134,6 @@ impl Cursor { + /// + /// let reference = buff.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &T { &self.inner } + + /// Gets a mutable reference to the underlying value in this cursor. +@@ -155,7 +152,6 @@ impl Cursor { + /// + /// let reference = buff.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut T { &mut self.inner } + + /// Returns the current position of this cursor. +@@ -177,7 +173,6 @@ impl Cursor { + /// buff.seek(SeekFrom::Current(-1)).unwrap(); + /// assert_eq!(buff.position(), 1); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn position(&self) -> u64 { self.pos } + + /// Sets the position of this cursor. +@@ -197,11 +192,9 @@ impl Cursor { + /// buff.set_position(4); + /// assert_eq!(buff.position(), 4); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn set_position(&mut self, pos: u64) { self.pos = pos; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl io::Seek for Cursor where T: AsRef<[u8]> { + fn seek(&mut self, style: SeekFrom) -> io::Result { + let (base_pos, offset) = match style { +@@ -222,25 +215,27 @@ impl io::Seek for Cursor where T: AsRef<[u8]> { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Cursor where T: AsRef<[u8]> { + fn read(&mut self, buf: &mut [u8]) -> io::Result { +- let n = Read::read(&mut self.fill_buf()?, buf)?; ++ let n = Read::read(&mut self.get_buf()?, buf)?; + self.pos += n as u64; + Ok(n) + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl BufRead for Cursor where T: AsRef<[u8]> { +- fn fill_buf(&mut self) -> io::Result<&[u8]> { ++impl Cursor where T: AsRef<[u8]> { ++ fn get_buf(&mut self) -> io::Result<&[u8]> { + let amt = cmp::min(self.pos, self.inner.as_ref().len() as u64); + Ok(&self.inner.as_ref()[(amt as usize)..]) + } ++} ++ ++#[cfg(feature = "collections")] ++impl BufRead for Cursor where T: AsRef<[u8]> { ++ fn fill_buf(&mut self) -> io::Result<&[u8]> { self.get_buf() } + fn consume(&mut self, amt: usize) { self.pos += amt as u64; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for Cursor<&'a mut [u8]> { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -252,7 +247,7 @@ impl<'a> Write for Cursor<&'a mut [u8]> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature = "collections")] + impl Write for Cursor> { + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos: usize = self.position().try_into().map_err(|_| { +@@ -282,8 +277,8 @@ impl Write for Cursor> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "cursor_box_slice", since = "1.5.0")] +-impl Write for Cursor> { ++#[cfg(feature = "alloc")] ++impl Write for Cursor<::alloc::boxed::Box<[u8]>> { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos = cmp::min(self.pos, self.inner.len() as u64); +diff --git a/error.rs b/error.rs +index fb67eaf..1c9f15e 100644 +--- a/error.rs ++++ b/error.rs +@@ -8,11 +8,16 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use error; +-use fmt; +-use result; +-use sys; +-use convert::From; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++#[cfg(not(feature="alloc"))] use ::FakeBox as Box; ++use core::convert::Into; ++use core::fmt; ++use core::marker::{Send, Sync}; ++use core::option::Option::{self, Some, None}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(not(feature="collections"))] use ::ErrorString as String; ++use core::convert::From; + + /// A specialized [`Result`](../result/enum.Result.html) type for I/O + /// operations. +@@ -44,7 +49,6 @@ use convert::From; + /// Ok(buffer) + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub type Result = result::Result; + + /// The error type for I/O operations of the `Read`, `Write`, `Seek`, and +@@ -56,7 +60,6 @@ pub type Result = result::Result; + /// + /// [`ErrorKind`]: enum.ErrorKind.html + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Error { + repr: Repr, + } +@@ -64,13 +67,16 @@ pub struct Error { + enum Repr { + Os(i32), + Simple(ErrorKind), ++ #[cfg(feature="alloc")] + Custom(Box), ++ #[cfg(not(feature="alloc"))] ++ Custom(Custom), + } + + #[derive(Debug)] + struct Custom { + kind: ErrorKind, +- error: Box, ++ error: String, + } + + /// A list specifying general categories of I/O error. +@@ -82,47 +88,34 @@ struct Custom { + /// + /// [`io::Error`]: struct.Error.html + #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)] +-#[stable(feature = "rust1", since = "1.0.0")] + #[allow(deprecated)] + pub enum ErrorKind { + /// An entity was not found, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + NotFound, + /// The operation lacked the necessary privileges to complete. +- #[stable(feature = "rust1", since = "1.0.0")] + PermissionDenied, + /// The connection was refused by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionRefused, + /// The connection was reset by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionReset, + /// The connection was aborted (terminated) by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionAborted, + /// The network operation failed because it was not connected yet. +- #[stable(feature = "rust1", since = "1.0.0")] + NotConnected, + /// A socket address could not be bound because the address is already in + /// use elsewhere. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrInUse, + /// A nonexistent interface was requested or the requested address was not + /// local. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrNotAvailable, + /// The operation failed because a pipe was closed. +- #[stable(feature = "rust1", since = "1.0.0")] + BrokenPipe, + /// An entity already exists, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + AlreadyExists, + /// The operation needs to block to complete, but the blocking operation was + /// requested to not occur. +- #[stable(feature = "rust1", since = "1.0.0")] + WouldBlock, + /// A parameter was incorrect. +- #[stable(feature = "rust1", since = "1.0.0")] + InvalidInput, + /// Data not valid for the operation were encountered. + /// +@@ -134,10 +127,8 @@ pub enum ErrorKind { + /// `InvalidData` if the file's contents are not valid UTF-8. + /// + /// [`InvalidInput`]: #variant.InvalidInput +- #[stable(feature = "io_invalid_data", since = "1.2.0")] + InvalidData, + /// The I/O operation's timeout expired, causing it to be canceled. +- #[stable(feature = "rust1", since = "1.0.0")] + TimedOut, + /// An error returned when an operation could not be completed because a + /// call to [`write`] returned [`Ok(0)`]. +@@ -148,15 +139,12 @@ pub enum ErrorKind { + /// + /// [`write`]: ../../std/io/trait.Write.html#tymethod.write + /// [`Ok(0)`]: ../../std/io/type.Result.html +- #[stable(feature = "rust1", since = "1.0.0")] + WriteZero, + /// This operation was interrupted. + /// + /// Interrupted operations can typically be retried. +- #[stable(feature = "rust1", since = "1.0.0")] + Interrupted, + /// Any I/O error not part of this list. +- #[stable(feature = "rust1", since = "1.0.0")] + Other, + + /// An error returned when an operation could not be completed because an +@@ -165,15 +153,10 @@ pub enum ErrorKind { + /// This typically means that an operation could only succeed if it read a + /// particular number of bytes but only a smaller number of bytes could be + /// read. +- #[stable(feature = "read_exact", since = "1.6.0")] + UnexpectedEof, + + /// A marker variant that tells the compiler that users of this enum cannot + /// match it exhaustively. +- #[unstable(feature = "io_error_internals", +- reason = "better expressed through extensible enums that this \ +- enum cannot be exhaustively matched against", +- issue = "0")] + #[doc(hidden)] + __Nonexhaustive, + } +@@ -206,7 +189,6 @@ impl ErrorKind { + + /// Intended for use for errors not exposed to the user, where allocating onto + /// the heap (for normal construction via Error::new) is too costly. +-#[stable(feature = "io_error_from_errorkind", since = "1.14.0")] + impl From for Error { + fn from(kind: ErrorKind) -> Error { + Error { +@@ -234,14 +216,13 @@ impl Error { + /// // errors can also be created from other errors + /// let custom_error2 = Error::new(ErrorKind::Interrupted, custom_error); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(kind: ErrorKind, error: E) -> Error +- where E: Into> ++ where E: Into + { + Self::_new(kind, error.into()) + } + +- fn _new(kind: ErrorKind, error: Box) -> Error { ++ fn _new(kind: ErrorKind, error: String) -> Error { + Error { + repr: Repr::Custom(Box::new(Custom { + kind: kind, +@@ -250,24 +231,6 @@ impl Error { + } + } + +- /// Returns an error representing the last OS error which occurred. +- /// +- /// This function reads the value of `errno` for the target platform (e.g. +- /// `GetLastError` on Windows) and will return a corresponding instance of +- /// `Error` for the error code. +- /// +- /// # Examples +- /// +- /// ``` +- /// use std::io::Error; +- /// +- /// println!("last OS error: {:?}", Error::last_os_error()); +- /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] +- pub fn last_os_error() -> Error { +- Error::from_raw_os_error(sys::os::errno() as i32) +- } +- + /// Creates a new instance of an `Error` from a particular OS error code. + /// + /// # Examples +@@ -293,7 +256,6 @@ impl Error { + /// assert_eq!(error.kind(), io::ErrorKind::AddrInUse); + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn from_raw_os_error(code: i32) -> Error { + Error { repr: Repr::Os(code) } + } +@@ -324,7 +286,6 @@ impl Error { + /// print_os_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn raw_os_error(&self) -> Option { + match self.repr { + Repr::Os(i) => Some(i), +@@ -358,12 +319,11 @@ impl Error { + /// print_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_ref(&self) -> Option<&(error::Error+Send+Sync+'static)> { ++ pub fn get_ref(&self) -> Option<&String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref c) => Some(&*c.error), ++ Repr::Custom(ref c) => Some(&c.error), + } + } + +@@ -429,12 +389,11 @@ impl Error { + /// print_error(&change_error(Error::new(ErrorKind::Other, MyError::new()))); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_mut(&mut self) -> Option<&mut (error::Error+Send+Sync+'static)> { ++ pub fn get_mut(&mut self) -> Option<&mut String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref mut c) => Some(&mut *c.error), ++ Repr::Custom(ref mut c) => Some(&mut c.error), + } + } + +@@ -463,8 +422,7 @@ impl Error { + /// print_error(Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn into_inner(self) -> Option> { ++ pub fn into_inner(self) -> Option { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +@@ -490,10 +448,9 @@ impl Error { + /// print_error(Error::new(ErrorKind::AddrInUse, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn kind(&self) -> ErrorKind { + match self.repr { +- Repr::Os(code) => sys::decode_error_kind(code), ++ Repr::Os(_code) => ErrorKind::Other, + Repr::Custom(ref c) => c.kind, + Repr::Simple(kind) => kind, + } +@@ -504,21 +461,18 @@ impl fmt::Debug for Repr { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match *self { + Repr::Os(ref code) => +- fmt.debug_struct("Os").field("code", code) +- .field("message", &sys::os::error_string(*code)).finish(), ++ fmt.debug_struct("Os").field("code", code).finish(), + Repr::Custom(ref c) => fmt.debug_tuple("Custom").field(c).finish(), + Repr::Simple(kind) => fmt.debug_tuple("Kind").field(&kind).finish(), + } + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for Error { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match self.repr { + Repr::Os(code) => { +- let detail = sys::os::error_string(code); +- write!(fmt, "{} (os error {})", detail, code) ++ write!(fmt, "os error {}", code) + } + Repr::Custom(ref c) => c.error.fmt(fmt), + Repr::Simple(kind) => write!(fmt, "{}", kind.as_str()), +@@ -526,24 +480,6 @@ impl fmt::Display for Error { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for Error { +- fn description(&self) -> &str { +- match self.repr { +- Repr::Os(..) | Repr::Simple(..) => self.kind().as_str(), +- Repr::Custom(ref c) => c.error.description(), +- } +- } +- +- fn cause(&self) -> Option<&error::Error> { +- match self.repr { +- Repr::Os(..) => None, +- Repr::Simple(..) => None, +- Repr::Custom(ref c) => c.error.cause(), +- } +- } +-} +- + fn _assert_error_is_sync_send() { + fn _is_sync_send() {} + _is_sync_send::(); +diff --git a/impls.rs b/impls.rs +index f691289..c4374d3 100644 +--- a/impls.rs ++++ b/impls.rs +@@ -8,26 +8,31 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use cmp; +-use io::{self, SeekFrom, Read, Write, Seek, BufRead, Error, ErrorKind}; +-use fmt; +-use mem; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++use core::cmp; ++use io::{self, SeekFrom, Read, Write, Seek, Error, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; ++use core::fmt; ++use core::mem; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(feature="collections")] use collections::vec::Vec; + + // ============================================================================= + // Forwarding implementations + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, R: Read + ?Sized> Read for &'a mut R { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -38,7 +43,6 @@ impl<'a, R: Read + ?Sized> Read for &'a mut R { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, W: Write + ?Sized> Write for &'a mut W { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -56,12 +60,11 @@ impl<'a, W: Write + ?Sized> Write for &'a mut W { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, S: Seek + ?Sized> Seek for &'a mut S { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -80,18 +83,20 @@ impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Read for Box { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -102,7 +107,7 @@ impl Read for Box { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Write for Box { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -120,12 +125,12 @@ impl Write for Box { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Seek for Box { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Box { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -151,7 +156,6 @@ impl BufRead for Box { + /// + /// Note that reading updates the slice to point to the yet unread part. + /// The slice will be empty when EOF is reached. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Read for &'a [u8] { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { +@@ -193,7 +197,7 @@ impl<'a> Read for &'a [u8] { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a> BufRead for &'a [u8] { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(*self) } +@@ -207,7 +211,6 @@ impl<'a> BufRead for &'a [u8] { + /// + /// Note that writing updates the slice to point to the yet unwritten part. + /// The slice will be empty when it has been completely overwritten. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for &'a mut [u8] { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -233,7 +236,7 @@ impl<'a> Write for &'a mut [u8] { + + /// Write is implemented for `Vec` by appending to the vector. + /// The vector will grow as needed. +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Write for Vec { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { +diff --git a/memchr.rs b/memchr.rs +index 3824a5f..312cf47 100644 +--- a/memchr.rs ++++ b/memchr.rs +@@ -11,10 +11,12 @@ + // Original implementation taken from rust-memchr + // Copyright 2015 Andrew Gallant, bluss and Nicolas Koch + ++pub use self::fallback::{memchr,memrchr}; ++ + #[allow(dead_code)] + pub mod fallback { +- use cmp; +- use mem; ++ use core::cmp; ++ use core::mem; + + const LO_U64: u64 = 0x0101010101010101; + const HI_U64: u64 = 0x8080808080808080; +diff --git a/mod.rs b/mod.rs +index 8ebc5c0..6c39210 100644 +--- a/mod.rs ++++ b/mod.rs +@@ -265,44 +265,34 @@ + //! [`?` operator]: ../../book/syntax-index.html + //! [`read`]: trait.Read.html#tymethod.read + +-#![stable(feature = "rust1", since = "1.0.0")] +- +-use cmp; ++use core::cmp; + use core::str as core_str; +-use error as std_error; +-use fmt; +-use result; +-use str; +-use memchr; +- +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::{BufReader, BufWriter, LineWriter}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::IntoInnerError; +-#[stable(feature = "rust1", since = "1.0.0")] ++use core::fmt; ++use core::iter::{Iterator}; ++use core::marker::Sized; ++#[cfg(feature="collections")] use core::ops::{Drop, FnOnce}; ++use core::option::Option::{self, Some, None}; ++use core::result::Result::{Ok, Err}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++use core::str; ++#[cfg(feature="collections")] use collections::vec::Vec; ++mod memchr; ++ ++#[cfg(feature="collections")] pub use self::buffered::{BufReader, BufWriter, LineWriter}; ++#[cfg(feature="collections")] pub use self::buffered::IntoInnerError; + pub use self::cursor::Cursor; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::error::{Result, Error, ErrorKind}; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::util::{copy, sink, Sink, empty, Empty, repeat, Repeat}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{stdin, stdout, stderr, _print, Stdin, Stdout, Stderr}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{StdoutLock, StderrLock, StdinLock}; +-#[unstable(feature = "libstd_io_internals", issue = "0")] +-#[doc(no_inline, hidden)] +-pub use self::stdio::{set_panic, set_print}; + + pub mod prelude; +-mod buffered; ++#[cfg(feature="collections")] mod buffered; + mod cursor; + mod error; + mod impls; +-mod lazy; + mod util; +-mod stdio; + +-const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; ++const DEFAULT_BUF_SIZE: usize = 8 * 1024; + + // A few methods below (read_to_string, read_line) will append data into a + // `String` buffer, but we need to be pretty careful when doing this. The +@@ -322,6 +312,7 @@ const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; + // 2. We're passing a raw buffer to the function `f`, and it is expected that + // the function only *appends* bytes to the buffer. We'll get undefined + // behavior if existing bytes are overwritten to have non-UTF-8 data. ++#[cfg(feature="collections")] + fn append_to_string(buf: &mut String, f: F) -> Result + where F: FnOnce(&mut Vec) -> Result + { +@@ -353,6 +344,7 @@ fn append_to_string(buf: &mut String, f: F) -> Result + // of data to return. Simply tacking on an extra DEFAULT_BUF_SIZE space every + // time is 4,500 times (!) slower than this if the reader has a very small + // amount of data to return. ++#[cfg(feature="collections")] + fn read_to_end(r: &mut R, buf: &mut Vec) -> Result { + let start_len = buf.len(); + let mut len = start_len; +@@ -435,7 +427,6 @@ fn read_to_end(r: &mut R, buf: &mut Vec) -> Result + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Read { + /// Pull some bytes from this source into the specified buffer, returning + /// how many bytes were read. +@@ -485,7 +476,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read(&mut self, buf: &mut [u8]) -> Result; + + /// Read all bytes until EOF in this source, placing them into `buf`. +@@ -527,7 +517,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_end(&mut self, buf: &mut Vec) -> Result { + read_to_end(self, buf) + } +@@ -565,7 +555,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_string(&mut self, buf: &mut String) -> Result { + // Note that we do *not* call `.read_to_end()` here. We are passing + // `&mut Vec` (the raw contents of `buf`) into the `read_to_end` +@@ -626,7 +616,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "read_exact", since = "1.6.0")] + fn read_exact(&mut self, mut buf: &mut [u8]) -> Result<()> { + while !buf.is_empty() { + match self.read(buf) { +@@ -678,7 +667,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + + /// Transforms this `Read` instance to an `Iterator` over its bytes. +@@ -708,7 +696,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn bytes(self) -> Bytes where Self: Sized { + Bytes { inner: self } + } +@@ -745,10 +732,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[unstable(feature = "io", reason = "the semantics of a partial read/write \ +- of where errors happen is currently \ +- unclear and may change", +- issue = "27802")] + fn chars(self) -> Chars where Self: Sized { + Chars { inner: self } + } +@@ -783,7 +766,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn chain(self, next: R) -> Chain where Self: Sized { + Chain { first: self, second: next, done_first: false } + } +@@ -817,7 +799,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn take(self, limit: u64) -> Take where Self: Sized { + Take { inner: self, limit: limit } + } +@@ -857,7 +838,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Write { + /// Write a buffer into this object, returning how many bytes were written. + /// +@@ -897,7 +877,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write(&mut self, buf: &[u8]) -> Result; + + /// Flush this output stream, ensuring that all intermediately buffered +@@ -923,7 +902,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn flush(&mut self) -> Result<()>; + + /// Attempts to write an entire buffer into this write. +@@ -950,7 +928,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_all(&mut self, mut buf: &[u8]) -> Result<()> { + while !buf.is_empty() { + match self.write(buf) { +@@ -1002,7 +979,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_fmt(&mut self, fmt: fmt::Arguments) -> Result<()> { + // Create a shim which translates a Write to a fmt::Write and saves + // off I/O errors. instead of discarding them +@@ -1058,7 +1034,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + } + +@@ -1088,7 +1063,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Seek { + /// Seek to an offset, in bytes, in a stream. + /// +@@ -1104,7 +1078,6 @@ pub trait Seek { + /// Seeking to a negative offset is considered an error. + /// + /// [`SeekFrom::Start`]: enum.SeekFrom.html#variant.Start +- #[stable(feature = "rust1", since = "1.0.0")] + fn seek(&mut self, pos: SeekFrom) -> Result; + } + +@@ -1114,29 +1087,26 @@ pub trait Seek { + /// + /// [`Seek`]: trait.Seek.html + #[derive(Copy, PartialEq, Eq, Clone, Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub enum SeekFrom { + /// Set the offset to the provided number of bytes. +- #[stable(feature = "rust1", since = "1.0.0")] +- Start(#[stable(feature = "rust1", since = "1.0.0")] u64), ++ Start(u64), + + /// Set the offset to the size of this object plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- End(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ End(i64), + + /// Set the offset to the current position plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- Current(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ Current(i64), + } + ++#[cfg(feature="collections")] + fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + -> Result { + let mut read = 0; +@@ -1216,7 +1186,7 @@ fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + /// # } + /// ``` + /// +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub trait BufRead: Read { + /// Fills the internal buffer of this object, returning the buffer contents. + /// +@@ -1261,7 +1231,6 @@ pub trait BufRead: Read { + /// // ensure the bytes we worked with aren't returned again later + /// stdin.consume(length); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn fill_buf(&mut self) -> Result<&[u8]>; + + /// Tells this buffer that `amt` bytes have been consumed from the buffer, +@@ -1283,7 +1252,6 @@ pub trait BufRead: Read { + /// that method's example includes an example of `consume()`. + /// + /// [`fill_buf`]: #tymethod.fill_buf +- #[stable(feature = "rust1", since = "1.0.0")] + fn consume(&mut self, amt: usize); + + /// Read all bytes into `buf` until the delimiter `byte` or EOF is reached. +@@ -1339,7 +1307,6 @@ pub trait BufRead: Read { + /// assert_eq!(num_bytes, 0); + /// assert_eq!(buf, b""); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_until(&mut self, byte: u8, buf: &mut Vec) -> Result { + read_until(self, byte, buf) + } +@@ -1394,7 +1361,6 @@ pub trait BufRead: Read { + /// assert_eq!(num_bytes, 0); + /// assert_eq!(buf, ""); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_line(&mut self, buf: &mut String) -> Result { + // Note that we are not calling the `.read_until` method here, but + // rather our hardcoded implementation. For more details as to why, see +@@ -1435,7 +1401,6 @@ pub trait BufRead: Read { + /// assert_eq!(split_iter.next(), Some(b"dolor".to_vec())); + /// assert_eq!(split_iter.next(), None); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn split(self, byte: u8) -> Split where Self: Sized { + Split { buf: self, delim: byte } + } +@@ -1474,7 +1439,6 @@ pub trait BufRead: Read { + /// Each line of the iterator has the same error semantics as [`BufRead::read_line`]. + /// + /// [`BufRead::read_line`]: trait.BufRead.html#method.read_line +- #[stable(feature = "rust1", since = "1.0.0")] + fn lines(self) -> Lines where Self: Sized { + Lines { buf: self } + } +@@ -1486,14 +1450,12 @@ pub trait BufRead: Read { + /// Please see the documentation of [`chain`] for more details. + /// + /// [`chain`]: trait.Read.html#method.chain +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Chain { + first: T, + second: U, + done_first: bool, + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Chain { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.debug_struct("Chain") +@@ -1503,7 +1465,6 @@ impl fmt::Debug for Chain { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Chain { + fn read(&mut self, buf: &mut [u8]) -> Result { + if !self.done_first { +@@ -1516,7 +1477,7 @@ impl Read for Chain { + } + } + +-#[stable(feature = "chain_bufread", since = "1.9.0")] ++#[cfg(feature="collections")] + impl BufRead for Chain { + fn fill_buf(&mut self) -> Result<&[u8]> { + if !self.done_first { +@@ -1543,7 +1504,6 @@ impl BufRead for Chain { + /// Please see the documentation of [`take`] for more details. + /// + /// [`take`]: trait.Read.html#method.take +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Debug)] + pub struct Take { + inner: T, +@@ -1578,7 +1538,6 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn limit(&self) -> u64 { self.limit } + + /// Consumes the `Take`, returning the wrapped reader. +@@ -1601,13 +1560,11 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "io_take_into_inner", since = "1.15.0")] + pub fn into_inner(self) -> T { + self.inner + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Take { + fn read(&mut self, buf: &mut [u8]) -> Result { + // Don't call into inner reader at all at EOF because it may still block +@@ -1622,7 +1579,7 @@ impl Read for Take { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Take { + fn fill_buf(&mut self) -> Result<&[u8]> { + // Don't call into inner reader at all at EOF because it may still block +@@ -1661,13 +1618,11 @@ fn read_one_byte(reader: &mut Read) -> Option> { + /// Please see the documentation of [`bytes`] for more details. + /// + /// [`bytes`]: trait.Read.html#method.bytes +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Debug)] + pub struct Bytes { + inner: R, + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Iterator for Bytes { + type Item = Result; + +@@ -1682,8 +1637,6 @@ impl Iterator for Bytes { + /// Please see the documentation of `chars()` for more details. + /// + /// [chars]: trait.Read.html#method.chars +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + #[derive(Debug)] + pub struct Chars { + inner: R, +@@ -1692,8 +1645,6 @@ pub struct Chars { + /// An enumeration of possible errors that can be generated from the `Chars` + /// adapter. + #[derive(Debug)] +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + pub enum CharsError { + /// Variant representing that the underlying stream was read successfully + /// but it did not contain valid utf8 data. +@@ -1703,8 +1654,6 @@ pub enum CharsError { + Other(Error), + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl Iterator for Chars { + type Item = result::Result; + +@@ -1736,25 +1685,6 @@ impl Iterator for Chars { + } + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] +-impl std_error::Error for CharsError { +- fn description(&self) -> &str { +- match *self { +- CharsError::NotUtf8 => "invalid utf8 encoding", +- CharsError::Other(ref e) => std_error::Error::description(e), +- } +- } +- fn cause(&self) -> Option<&std_error::Error> { +- match *self { +- CharsError::NotUtf8 => None, +- CharsError::Other(ref e) => e.cause(), +- } +- } +-} +- +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl fmt::Display for CharsError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + match *self { +@@ -1773,14 +1703,14 @@ impl fmt::Display for CharsError { + /// `BufRead`. Please see the documentation of `split()` for more details. + /// + /// [split]: trait.BufRead.html#method.split +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + #[derive(Debug)] + pub struct Split { + buf: B, + delim: u8, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Split { + type Item = Result>; + +@@ -1805,13 +1735,13 @@ impl Iterator for Split { + /// `BufRead`. Please see the documentation of `lines()` for more details. + /// + /// [lines]: trait.BufRead.html#method.lines +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + #[derive(Debug)] + pub struct Lines { + buf: B, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Lines { + type Item = Result; + +diff --git a/prelude.rs b/prelude.rs +index 8772d0f..49d66c9 100644 +--- a/prelude.rs ++++ b/prelude.rs +@@ -18,7 +18,8 @@ + //! use std::io::prelude::*; + //! ``` + +-#![stable(feature = "rust1", since = "1.0.0")] ++pub use super::{Read, Write, Seek}; ++#[cfg(feature="collections")] pub use super::BufRead; + +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use super::{Read, Write, BufRead, Seek}; ++#[cfg(feature="collections")] pub use alloc::boxed::Box; ++#[cfg(feature="collections")] pub use collections::vec::Vec; +diff --git a/util.rs b/util.rs +index 078f1ad..fd13c98 100644 +--- a/util.rs ++++ b/util.rs +@@ -10,8 +10,9 @@ + + #![allow(missing_copy_implementations)] + +-use fmt; +-use io::{self, Read, Write, ErrorKind, BufRead}; ++use core::fmt; ++use io::{self, Read, Write, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; + + /// Copies the entire contents of a reader into a writer. + /// +@@ -43,7 +44,6 @@ use io::{self, Read, Write, ErrorKind, BufRead}; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn copy(reader: &mut R, writer: &mut W) -> io::Result + where R: Read, W: Write + { +@@ -67,7 +67,6 @@ pub fn copy(reader: &mut R, writer: &mut W) -> io::Result< + /// the documentation of `empty()` for more details. + /// + /// [empty]: fn.empty.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Empty { _priv: () } + + /// Constructs a new handle to an empty reader. +@@ -85,20 +84,18 @@ pub struct Empty { _priv: () } + /// io::empty().read_to_string(&mut buffer).unwrap(); + /// assert!(buffer.is_empty()); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn empty() -> Empty { Empty { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Empty { + fn read(&mut self, _buf: &mut [u8]) -> io::Result { Ok(0) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++ ++#[cfg(feature="collections")] + impl BufRead for Empty { + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(&[]) } + fn consume(&mut self, _n: usize) {} + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Empty { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Empty { .. }") +@@ -111,7 +108,6 @@ impl fmt::Debug for Empty { + /// see the documentation of `repeat()` for more details. + /// + /// [repeat]: fn.repeat.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Repeat { byte: u8 } + + /// Creates an instance of a reader that infinitely repeats one byte. +@@ -128,10 +124,8 @@ pub struct Repeat { byte: u8 } + /// io::repeat(0b101).read_exact(&mut buffer).unwrap(); + /// assert_eq!(buffer, [0b101, 0b101, 0b101]); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn repeat(byte: u8) -> Repeat { Repeat { byte: byte } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Repeat { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + for slot in &mut *buf { +@@ -141,7 +135,6 @@ impl Read for Repeat { + } + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Repeat { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Repeat { .. }") +@@ -154,7 +147,6 @@ impl fmt::Debug for Repeat { + /// see the documentation of `sink()` for more details. + /// + /// [sink]: fn.sink.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Sink { _priv: () } + + /// Creates an instance of a writer which will successfully consume all data. +@@ -171,16 +163,13 @@ pub struct Sink { _priv: () } + /// let num_bytes = io::sink().write(&buffer).unwrap(); + /// assert_eq!(num_bytes, 5); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn sink() -> Sink { Sink { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for Sink { + fn write(&mut self, buf: &[u8]) -> io::Result { Ok(buf.len()) } + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Sink { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Sink { .. }") diff --git a/patches/7e7775ce7bfc916ce723bd1fdaf4ae54662c6627.patch b/patches/7e7775ce7bfc916ce723bd1fdaf4ae54662c6627.patch new file mode 100644 index 0000000..7199b4c --- /dev/null +++ b/patches/7e7775ce7bfc916ce723bd1fdaf4ae54662c6627.patch @@ -0,0 +1,1476 @@ +diff --git a/buffered.rs b/buffered.rs +index cd7a50d..efa81b6 100644 +--- a/buffered.rs ++++ b/buffered.rs +@@ -10,13 +10,13 @@ + + //! Buffering wrappers for I/O traits + ++use core::prelude::v1::*; + use io::prelude::*; + +-use cmp; +-use error; +-use fmt; ++use core::cmp; ++use core::fmt; + use io::{self, DEFAULT_BUF_SIZE, Error, ErrorKind, SeekFrom}; +-use memchr; ++use io::memchr; + + /// The `BufReader` struct adds buffering to any reader. + /// +@@ -46,7 +46,6 @@ use memchr; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufReader { + inner: R, + buf: Box<[u8]>, +@@ -69,7 +68,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: R) -> BufReader { + BufReader::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -90,7 +88,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: R) -> BufReader { + BufReader { + inner: inner, +@@ -118,7 +115,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &R { &self.inner } + + /// Gets a mutable reference to the underlying reader. +@@ -139,7 +135,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut R { &mut self.inner } + + /// Unwraps this `BufReader`, returning the underlying reader. +@@ -160,11 +155,9 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> R { self.inner } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for BufReader { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + // If we don't have any buffered data and we're doing a massive read +@@ -182,7 +175,6 @@ impl Read for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl BufRead for BufReader { + fn fill_buf(&mut self) -> io::Result<&[u8]> { + // If we've reached the end of our internal buffer then we need to fetch +@@ -202,7 +194,6 @@ impl BufRead for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufReader where R: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufReader") +@@ -212,7 +203,6 @@ impl fmt::Debug for BufReader where R: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufReader { + /// Seek to an offset, in bytes, in the underlying reader. + /// +@@ -305,7 +295,6 @@ impl Seek for BufReader { + /// [`Write`]: ../../std/io/trait.Write.html + /// [`write`]: ../../std/net/struct.TcpStream.html#method.write + /// [`TcpStream`]: ../../std/net/struct.TcpStream.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufWriter { + inner: Option, + buf: Vec, +@@ -340,7 +329,6 @@ pub struct BufWriter { + /// }; + /// ``` + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct IntoInnerError(W, Error); + + impl BufWriter { +@@ -354,7 +342,6 @@ impl BufWriter { + /// + /// let mut buffer = BufWriter::new(TcpStream::connect("127.0.0.1:34254").unwrap()); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> BufWriter { + BufWriter::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -372,7 +359,6 @@ impl BufWriter { + /// let stream = TcpStream::connect("127.0.0.1:34254").unwrap(); + /// let mut buffer = BufWriter::with_capacity(100, stream); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> BufWriter { + BufWriter { + inner: Some(inner), +@@ -421,7 +407,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.as_ref().unwrap() } + + /// Gets a mutable reference to the underlying writer. +@@ -439,7 +424,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.as_mut().unwrap() } + + /// Unwraps this `BufWriter`, returning the underlying writer. +@@ -457,7 +441,6 @@ impl BufWriter { + /// // unwrap the TcpStream and flush the buffer + /// let stream = buffer.into_inner().unwrap(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(mut self) -> Result>> { + match self.flush_buf() { + Err(e) => Err(IntoInnerError(self, e)), +@@ -466,7 +449,6 @@ impl BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for BufWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.buf.len() + buf.len() > self.buf.capacity() { +@@ -486,7 +468,6 @@ impl Write for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufWriter") +@@ -496,7 +477,6 @@ impl fmt::Debug for BufWriter where W: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufWriter { + /// Seek to the offset, in bytes, in the underlying writer. + /// +@@ -506,7 +486,6 @@ impl Seek for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Drop for BufWriter { + fn drop(&mut self) { + if self.inner.is_some() && !self.panicked { +@@ -545,7 +524,6 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn error(&self) -> &Error { &self.1 } + + /// Returns the buffered writer instance which generated the error. +@@ -578,23 +556,13 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> W { self.0 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl From> for Error { + fn from(iie: IntoInnerError) -> Error { iie.1 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for IntoInnerError { +- fn description(&self) -> &str { +- error::Error::description(self.error()) +- } +-} +- +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for IntoInnerError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.error().fmt(f) +@@ -649,7 +617,6 @@ impl fmt::Display for IntoInnerError { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct LineWriter { + inner: BufWriter, + } +@@ -669,7 +636,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> LineWriter { + // Lines typically aren't that long, don't use a giant buffer + LineWriter::with_capacity(1024, inner) +@@ -690,7 +656,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> LineWriter { + LineWriter { inner: BufWriter::with_capacity(cap, inner) } + } +@@ -711,7 +676,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.get_ref() } + + /// Gets a mutable reference to the underlying writer. +@@ -734,7 +698,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.get_mut() } + + /// Unwraps this `LineWriter`, returning the underlying writer. +@@ -756,7 +719,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> Result>> { + self.inner.into_inner().map_err(|IntoInnerError(buf, e)| { + IntoInnerError(LineWriter { inner: buf }, e) +@@ -764,7 +726,6 @@ impl LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for LineWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + match memchr::memrchr(b'\n', buf) { +@@ -783,7 +744,6 @@ impl Write for LineWriter { + fn flush(&mut self) -> io::Result<()> { self.inner.flush() } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for LineWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("LineWriter") +diff --git a/cursor.rs b/cursor.rs +index 1b50233..6a7b44f 100644 +--- a/cursor.rs ++++ b/cursor.rs +@@ -8,10 +8,11 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + ++use core::prelude::v1::*; + use io::prelude::*; + +-use core::convert::TryInto; +-use cmp; ++#[cfg(feature = "collections")] use core::convert::TryInto; ++use core::cmp; + use io::{self, SeekFrom, Error, ErrorKind}; + + /// A `Cursor` wraps another type and provides it with a +@@ -79,7 +80,6 @@ use io::{self, SeekFrom, Error, ErrorKind}; + /// assert_eq!(&buff.get_ref()[5..15], &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]); + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Clone, Debug)] + pub struct Cursor { + inner: T, +@@ -98,7 +98,6 @@ impl Cursor { + /// # fn force_inference(_: &Cursor>) {} + /// # force_inference(&buff); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: T) -> Cursor { + Cursor { pos: 0, inner: inner } + } +@@ -116,7 +115,6 @@ impl Cursor { + /// + /// let vec = buff.into_inner(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> T { self.inner } + + /// Gets a reference to the underlying value in this cursor. +@@ -132,7 +130,6 @@ impl Cursor { + /// + /// let reference = buff.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &T { &self.inner } + + /// Gets a mutable reference to the underlying value in this cursor. +@@ -151,7 +148,6 @@ impl Cursor { + /// + /// let reference = buff.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut T { &mut self.inner } + + /// Returns the current position of this cursor. +@@ -173,7 +169,6 @@ impl Cursor { + /// buff.seek(SeekFrom::Current(-1)).unwrap(); + /// assert_eq!(buff.position(), 1); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn position(&self) -> u64 { self.pos } + + /// Sets the position of this cursor. +@@ -193,11 +188,9 @@ impl Cursor { + /// buff.set_position(4); + /// assert_eq!(buff.position(), 4); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn set_position(&mut self, pos: u64) { self.pos = pos; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl io::Seek for Cursor where T: AsRef<[u8]> { + fn seek(&mut self, style: SeekFrom) -> io::Result { + let pos = match style { +@@ -216,25 +209,27 @@ impl io::Seek for Cursor where T: AsRef<[u8]> { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Cursor where T: AsRef<[u8]> { + fn read(&mut self, buf: &mut [u8]) -> io::Result { +- let n = Read::read(&mut self.fill_buf()?, buf)?; ++ let n = Read::read(&mut self.get_buf()?, buf)?; + self.pos += n as u64; + Ok(n) + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl BufRead for Cursor where T: AsRef<[u8]> { +- fn fill_buf(&mut self) -> io::Result<&[u8]> { ++impl Cursor where T: AsRef<[u8]> { ++ fn get_buf(&mut self) -> io::Result<&[u8]> { + let amt = cmp::min(self.pos, self.inner.as_ref().len() as u64); + Ok(&self.inner.as_ref()[(amt as usize)..]) + } ++} ++ ++#[cfg(feature = "collections")] ++impl BufRead for Cursor where T: AsRef<[u8]> { ++ fn fill_buf(&mut self) -> io::Result<&[u8]> { self.get_buf() } + fn consume(&mut self, amt: usize) { self.pos += amt as u64; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for Cursor<&'a mut [u8]> { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -246,7 +241,7 @@ impl<'a> Write for Cursor<&'a mut [u8]> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature = "collections")] + impl Write for Cursor> { + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos: usize = self.position().try_into().map_err(|_| { +@@ -276,8 +271,8 @@ impl Write for Cursor> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "cursor_box_slice", since = "1.5.0")] +-impl Write for Cursor> { ++#[cfg(feature = "alloc")] ++impl Write for Cursor<::alloc::boxed::Box<[u8]>> { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos = cmp::min(self.pos, self.inner.len() as u64); +diff --git a/error.rs b/error.rs +index 795c89c..9a11eee 100644 +--- a/error.rs ++++ b/error.rs +@@ -8,11 +8,16 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use error; +-use fmt; +-use result; +-use sys; +-use convert::From; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++#[cfg(not(feature="alloc"))] use ::FakeBox as Box; ++use core::convert::Into; ++use core::fmt; ++use core::marker::{Send, Sync}; ++use core::option::Option::{self, Some, None}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(not(feature="collections"))] use ::ErrorString as String; ++use core::convert::From; + + /// A specialized [`Result`](../result/enum.Result.html) type for I/O + /// operations. +@@ -44,7 +49,6 @@ use convert::From; + /// Ok(buffer) + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub type Result = result::Result; + + /// The error type for I/O operations of the `Read`, `Write`, `Seek`, and +@@ -56,7 +60,6 @@ pub type Result = result::Result; + /// + /// [`ErrorKind`]: enum.ErrorKind.html + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Error { + repr: Repr, + } +@@ -64,13 +67,16 @@ pub struct Error { + enum Repr { + Os(i32), + Simple(ErrorKind), ++ #[cfg(feature="alloc")] + Custom(Box), ++ #[cfg(not(feature="alloc"))] ++ Custom(Custom), + } + + #[derive(Debug)] + struct Custom { + kind: ErrorKind, +- error: Box, ++ error: String, + } + + /// A list specifying general categories of I/O error. +@@ -82,47 +88,34 @@ struct Custom { + /// + /// [`io::Error`]: struct.Error.html + #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)] +-#[stable(feature = "rust1", since = "1.0.0")] + #[allow(deprecated)] + pub enum ErrorKind { + /// An entity was not found, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + NotFound, + /// The operation lacked the necessary privileges to complete. +- #[stable(feature = "rust1", since = "1.0.0")] + PermissionDenied, + /// The connection was refused by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionRefused, + /// The connection was reset by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionReset, + /// The connection was aborted (terminated) by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionAborted, + /// The network operation failed because it was not connected yet. +- #[stable(feature = "rust1", since = "1.0.0")] + NotConnected, + /// A socket address could not be bound because the address is already in + /// use elsewhere. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrInUse, + /// A nonexistent interface was requested or the requested address was not + /// local. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrNotAvailable, + /// The operation failed because a pipe was closed. +- #[stable(feature = "rust1", since = "1.0.0")] + BrokenPipe, + /// An entity already exists, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + AlreadyExists, + /// The operation needs to block to complete, but the blocking operation was + /// requested to not occur. +- #[stable(feature = "rust1", since = "1.0.0")] + WouldBlock, + /// A parameter was incorrect. +- #[stable(feature = "rust1", since = "1.0.0")] + InvalidInput, + /// Data not valid for the operation were encountered. + /// +@@ -134,10 +127,8 @@ pub enum ErrorKind { + /// `InvalidData` if the file's contents are not valid UTF-8. + /// + /// [`InvalidInput`]: #variant.InvalidInput +- #[stable(feature = "io_invalid_data", since = "1.2.0")] + InvalidData, + /// The I/O operation's timeout expired, causing it to be canceled. +- #[stable(feature = "rust1", since = "1.0.0")] + TimedOut, + /// An error returned when an operation could not be completed because a + /// call to [`write()`] returned [`Ok(0)`]. +@@ -148,15 +139,12 @@ pub enum ErrorKind { + /// + /// [`write()`]: ../../std/io/trait.Write.html#tymethod.write + /// [`Ok(0)`]: ../../std/io/type.Result.html +- #[stable(feature = "rust1", since = "1.0.0")] + WriteZero, + /// This operation was interrupted. + /// + /// Interrupted operations can typically be retried. +- #[stable(feature = "rust1", since = "1.0.0")] + Interrupted, + /// Any I/O error not part of this list. +- #[stable(feature = "rust1", since = "1.0.0")] + Other, + + /// An error returned when an operation could not be completed because an +@@ -165,15 +153,10 @@ pub enum ErrorKind { + /// This typically means that an operation could only succeed if it read a + /// particular number of bytes but only a smaller number of bytes could be + /// read. +- #[stable(feature = "read_exact", since = "1.6.0")] + UnexpectedEof, + + /// A marker variant that tells the compiler that users of this enum cannot + /// match it exhaustively. +- #[unstable(feature = "io_error_internals", +- reason = "better expressed through extensible enums that this \ +- enum cannot be exhaustively matched against", +- issue = "0")] + #[doc(hidden)] + __Nonexhaustive, + } +@@ -206,7 +189,6 @@ impl ErrorKind { + + /// Intended for use for errors not exposed to the user, where allocating onto + /// the heap (for normal construction via Error::new) is too costly. +-#[stable(feature = "io_error_from_errorkind", since = "1.14.0")] + impl From for Error { + fn from(kind: ErrorKind) -> Error { + Error { +@@ -234,14 +216,13 @@ impl Error { + /// // errors can also be created from other errors + /// let custom_error2 = Error::new(ErrorKind::Interrupted, custom_error); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(kind: ErrorKind, error: E) -> Error +- where E: Into> ++ where E: Into + { + Self::_new(kind, error.into()) + } + +- fn _new(kind: ErrorKind, error: Box) -> Error { ++ fn _new(kind: ErrorKind, error: String) -> Error { + Error { + repr: Repr::Custom(Box::new(Custom { + kind: kind, +@@ -250,24 +231,6 @@ impl Error { + } + } + +- /// Returns an error representing the last OS error which occurred. +- /// +- /// This function reads the value of `errno` for the target platform (e.g. +- /// `GetLastError` on Windows) and will return a corresponding instance of +- /// `Error` for the error code. +- /// +- /// # Examples +- /// +- /// ``` +- /// use std::io::Error; +- /// +- /// println!("last OS error: {:?}", Error::last_os_error()); +- /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] +- pub fn last_os_error() -> Error { +- Error::from_raw_os_error(sys::os::errno() as i32) +- } +- + /// Creates a new instance of an `Error` from a particular OS error code. + /// + /// # Examples +@@ -293,7 +256,6 @@ impl Error { + /// assert_eq!(error.kind(), io::ErrorKind::AddrInUse); + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn from_raw_os_error(code: i32) -> Error { + Error { repr: Repr::Os(code) } + } +@@ -324,7 +286,6 @@ impl Error { + /// print_os_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn raw_os_error(&self) -> Option { + match self.repr { + Repr::Os(i) => Some(i), +@@ -358,12 +319,11 @@ impl Error { + /// print_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_ref(&self) -> Option<&(error::Error+Send+Sync+'static)> { ++ pub fn get_ref(&self) -> Option<&String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref c) => Some(&*c.error), ++ Repr::Custom(ref c) => Some(&c.error), + } + } + +@@ -429,12 +389,11 @@ impl Error { + /// print_error(&change_error(Error::new(ErrorKind::Other, MyError::new()))); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_mut(&mut self) -> Option<&mut (error::Error+Send+Sync+'static)> { ++ pub fn get_mut(&mut self) -> Option<&mut String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref mut c) => Some(&mut *c.error), ++ Repr::Custom(ref mut c) => Some(&mut c.error), + } + } + +@@ -463,8 +422,7 @@ impl Error { + /// print_error(Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn into_inner(self) -> Option> { ++ pub fn into_inner(self) -> Option { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +@@ -490,10 +448,9 @@ impl Error { + /// print_error(Error::new(ErrorKind::AddrInUse, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn kind(&self) -> ErrorKind { + match self.repr { +- Repr::Os(code) => sys::decode_error_kind(code), ++ Repr::Os(_code) => ErrorKind::Other, + Repr::Custom(ref c) => c.kind, + Repr::Simple(kind) => kind, + } +@@ -504,21 +461,18 @@ impl fmt::Debug for Repr { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match *self { + Repr::Os(ref code) => +- fmt.debug_struct("Os").field("code", code) +- .field("message", &sys::os::error_string(*code)).finish(), ++ fmt.debug_struct("Os").field("code", code).finish(), + Repr::Custom(ref c) => fmt.debug_tuple("Custom").field(c).finish(), + Repr::Simple(kind) => fmt.debug_tuple("Kind").field(&kind).finish(), + } + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for Error { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match self.repr { + Repr::Os(code) => { +- let detail = sys::os::error_string(code); +- write!(fmt, "{} (os error {})", detail, code) ++ write!(fmt, "os error {}", code) + } + Repr::Custom(ref c) => c.error.fmt(fmt), + Repr::Simple(kind) => write!(fmt, "{}", kind.as_str()), +@@ -526,24 +480,6 @@ impl fmt::Display for Error { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for Error { +- fn description(&self) -> &str { +- match self.repr { +- Repr::Os(..) | Repr::Simple(..) => self.kind().as_str(), +- Repr::Custom(ref c) => c.error.description(), +- } +- } +- +- fn cause(&self) -> Option<&error::Error> { +- match self.repr { +- Repr::Os(..) => None, +- Repr::Simple(..) => None, +- Repr::Custom(ref c) => c.error.cause(), +- } +- } +-} +- + fn _assert_error_is_sync_send() { + fn _is_sync_send() {} + _is_sync_send::(); +diff --git a/impls.rs b/impls.rs +index f691289..c4374d3 100644 +--- a/impls.rs ++++ b/impls.rs +@@ -8,26 +8,31 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use cmp; +-use io::{self, SeekFrom, Read, Write, Seek, BufRead, Error, ErrorKind}; +-use fmt; +-use mem; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++use core::cmp; ++use io::{self, SeekFrom, Read, Write, Seek, Error, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; ++use core::fmt; ++use core::mem; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(feature="collections")] use collections::vec::Vec; + + // ============================================================================= + // Forwarding implementations + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, R: Read + ?Sized> Read for &'a mut R { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -38,7 +43,6 @@ impl<'a, R: Read + ?Sized> Read for &'a mut R { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, W: Write + ?Sized> Write for &'a mut W { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -56,12 +60,11 @@ impl<'a, W: Write + ?Sized> Write for &'a mut W { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, S: Seek + ?Sized> Seek for &'a mut S { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -80,18 +83,20 @@ impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Read for Box { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -102,7 +107,7 @@ impl Read for Box { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Write for Box { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -120,12 +125,12 @@ impl Write for Box { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Seek for Box { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Box { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -151,7 +156,6 @@ impl BufRead for Box { + /// + /// Note that reading updates the slice to point to the yet unread part. + /// The slice will be empty when EOF is reached. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Read for &'a [u8] { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { +@@ -193,7 +197,7 @@ impl<'a> Read for &'a [u8] { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a> BufRead for &'a [u8] { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(*self) } +@@ -207,7 +211,6 @@ impl<'a> BufRead for &'a [u8] { + /// + /// Note that writing updates the slice to point to the yet unwritten part. + /// The slice will be empty when it has been completely overwritten. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for &'a mut [u8] { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -233,7 +236,7 @@ impl<'a> Write for &'a mut [u8] { + + /// Write is implemented for `Vec` by appending to the vector. + /// The vector will grow as needed. +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Write for Vec { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { +diff --git a/memchr.rs b/memchr.rs +index 3824a5f..312cf47 100644 +--- a/memchr.rs ++++ b/memchr.rs +@@ -11,10 +11,12 @@ + // Original implementation taken from rust-memchr + // Copyright 2015 Andrew Gallant, bluss and Nicolas Koch + ++pub use self::fallback::{memchr,memrchr}; ++ + #[allow(dead_code)] + pub mod fallback { +- use cmp; +- use mem; ++ use core::cmp; ++ use core::mem; + + const LO_U64: u64 = 0x0101010101010101; + const HI_U64: u64 = 0x8080808080808080; +diff --git a/mod.rs b/mod.rs +index b3b8921..27f989a 100644 +--- a/mod.rs ++++ b/mod.rs +@@ -253,44 +253,34 @@ + //! [`try!`]: ../macro.try.html + //! [`read()`]: trait.Read.html#tymethod.read + +-#![stable(feature = "rust1", since = "1.0.0")] +- +-use cmp; ++use core::cmp; + use std_unicode::str as core_str; +-use error as std_error; +-use fmt; +-use result; +-use str; +-use memchr; +- +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::{BufReader, BufWriter, LineWriter}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::IntoInnerError; +-#[stable(feature = "rust1", since = "1.0.0")] ++use core::fmt; ++use core::iter::{Iterator}; ++use core::marker::Sized; ++#[cfg(feature="collections")] use core::ops::{Drop, FnOnce}; ++use core::option::Option::{self, Some, None}; ++use core::result::Result::{Ok, Err}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++use core::str; ++#[cfg(feature="collections")] use collections::vec::Vec; ++mod memchr; ++ ++#[cfg(feature="collections")] pub use self::buffered::{BufReader, BufWriter, LineWriter}; ++#[cfg(feature="collections")] pub use self::buffered::IntoInnerError; + pub use self::cursor::Cursor; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::error::{Result, Error, ErrorKind}; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::util::{copy, sink, Sink, empty, Empty, repeat, Repeat}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{stdin, stdout, stderr, _print, Stdin, Stdout, Stderr}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{StdoutLock, StderrLock, StdinLock}; +-#[unstable(feature = "libstd_io_internals", issue = "0")] +-#[doc(no_inline, hidden)] +-pub use self::stdio::{set_panic, set_print}; + + pub mod prelude; +-mod buffered; ++#[cfg(feature="collections")] mod buffered; + mod cursor; + mod error; + mod impls; +-mod lazy; + mod util; +-mod stdio; + +-const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; ++const DEFAULT_BUF_SIZE: usize = 8 * 1024; + + // A few methods below (read_to_string, read_line) will append data into a + // `String` buffer, but we need to be pretty careful when doing this. The +@@ -310,6 +300,7 @@ const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; + // 2. We're passing a raw buffer to the function `f`, and it is expected that + // the function only *appends* bytes to the buffer. We'll get undefined + // behavior if existing bytes are overwritten to have non-UTF-8 data. ++#[cfg(feature="collections")] + fn append_to_string(buf: &mut String, f: F) -> Result + where F: FnOnce(&mut Vec) -> Result + { +@@ -341,6 +332,7 @@ fn append_to_string(buf: &mut String, f: F) -> Result + // of data to return. Simply tacking on an extra DEFAULT_BUF_SIZE space every + // time is 4,500 times (!) slower than this if the reader has a very small + // amount of data to return. ++#[cfg(feature="collections")] + fn read_to_end(r: &mut R, buf: &mut Vec) -> Result { + let start_len = buf.len(); + let mut len = start_len; +@@ -423,7 +415,6 @@ fn read_to_end(r: &mut R, buf: &mut Vec) -> Result + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Read { + /// Pull some bytes from this source into the specified buffer, returning + /// how many bytes were read. +@@ -473,7 +464,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read(&mut self, buf: &mut [u8]) -> Result; + + /// Read all bytes until EOF in this source, placing them into `buf`. +@@ -515,7 +505,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_end(&mut self, buf: &mut Vec) -> Result { + read_to_end(self, buf) + } +@@ -553,7 +543,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_string(&mut self, buf: &mut String) -> Result { + // Note that we do *not* call `.read_to_end()` here. We are passing + // `&mut Vec` (the raw contents of `buf`) into the `read_to_end` +@@ -614,7 +604,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "read_exact", since = "1.6.0")] + fn read_exact(&mut self, mut buf: &mut [u8]) -> Result<()> { + while !buf.is_empty() { + match self.read(buf) { +@@ -666,7 +655,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + + /// Transforms this `Read` instance to an `Iterator` over its bytes. +@@ -696,7 +684,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn bytes(self) -> Bytes where Self: Sized { + Bytes { inner: self } + } +@@ -733,10 +720,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[unstable(feature = "io", reason = "the semantics of a partial read/write \ +- of where errors happen is currently \ +- unclear and may change", +- issue = "27802")] + fn chars(self) -> Chars where Self: Sized { + Chars { inner: self } + } +@@ -771,7 +754,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn chain(self, next: R) -> Chain where Self: Sized { + Chain { first: self, second: next, done_first: false } + } +@@ -805,7 +787,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn take(self, limit: u64) -> Take where Self: Sized { + Take { inner: self, limit: limit } + } +@@ -845,7 +826,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Write { + /// Write a buffer into this object, returning how many bytes were written. + /// +@@ -885,7 +865,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write(&mut self, buf: &[u8]) -> Result; + + /// Flush this output stream, ensuring that all intermediately buffered +@@ -911,7 +890,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn flush(&mut self) -> Result<()>; + + /// Attempts to write an entire buffer into this write. +@@ -938,7 +916,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_all(&mut self, mut buf: &[u8]) -> Result<()> { + while !buf.is_empty() { + match self.write(buf) { +@@ -990,7 +967,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_fmt(&mut self, fmt: fmt::Arguments) -> Result<()> { + // Create a shim which translates a Write to a fmt::Write and saves + // off I/O errors. instead of discarding them +@@ -1046,7 +1022,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + } + +@@ -1076,7 +1051,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Seek { + /// Seek to an offset, in bytes, in a stream. + /// +@@ -1092,7 +1066,6 @@ pub trait Seek { + /// Seeking to a negative offset is considered an error. + /// + /// [`SeekFrom::Start`]: enum.SeekFrom.html#variant.Start +- #[stable(feature = "rust1", since = "1.0.0")] + fn seek(&mut self, pos: SeekFrom) -> Result; + } + +@@ -1102,29 +1075,26 @@ pub trait Seek { + /// + /// [`Seek`]: trait.Seek.html + #[derive(Copy, PartialEq, Eq, Clone, Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub enum SeekFrom { + /// Set the offset to the provided number of bytes. +- #[stable(feature = "rust1", since = "1.0.0")] +- Start(#[stable(feature = "rust1", since = "1.0.0")] u64), ++ Start(u64), + + /// Set the offset to the size of this object plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- End(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ End(i64), + + /// Set the offset to the current position plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- Current(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ Current(i64), + } + ++#[cfg(feature="collections")] + fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + -> Result { + let mut read = 0; +@@ -1204,7 +1174,7 @@ fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + /// # } + /// ``` + /// +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub trait BufRead: Read { + /// Fills the internal buffer of this object, returning the buffer contents. + /// +@@ -1249,7 +1219,6 @@ pub trait BufRead: Read { + /// // ensure the bytes we worked with aren't returned again later + /// stdin.consume(length); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn fill_buf(&mut self) -> Result<&[u8]>; + + /// Tells this buffer that `amt` bytes have been consumed from the buffer, +@@ -1271,7 +1240,6 @@ pub trait BufRead: Read { + /// that method's example includes an example of `consume()`. + /// + /// [`fill_buf()`]: #tymethod.fill_buf +- #[stable(feature = "rust1", since = "1.0.0")] + fn consume(&mut self, amt: usize); + + /// Read all bytes into `buf` until the delimiter `byte` or EOF is reached. +@@ -1313,7 +1281,6 @@ pub trait BufRead: Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_until(&mut self, byte: u8, buf: &mut Vec) -> Result { + read_until(self, byte, buf) + } +@@ -1360,7 +1327,6 @@ pub trait BufRead: Read { + /// buffer.clear(); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_line(&mut self, buf: &mut String) -> Result { + // Note that we are not calling the `.read_until` method here, but + // rather our hardcoded implementation. For more details as to why, see +@@ -1397,7 +1363,6 @@ pub trait BufRead: Read { + /// println!("{:?}", content.unwrap()); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn split(self, byte: u8) -> Split where Self: Sized { + Split { buf: self, delim: byte } + } +@@ -1425,7 +1390,6 @@ pub trait BufRead: Read { + /// println!("{}", line.unwrap()); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn lines(self) -> Lines where Self: Sized { + Lines { buf: self } + } +@@ -1437,14 +1401,12 @@ pub trait BufRead: Read { + /// Please see the documentation of [`chain()`] for more details. + /// + /// [`chain()`]: trait.Read.html#method.chain +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Chain { + first: T, + second: U, + done_first: bool, + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Chain { + fn read(&mut self, buf: &mut [u8]) -> Result { + if !self.done_first { +@@ -1457,7 +1419,7 @@ impl Read for Chain { + } + } + +-#[stable(feature = "chain_bufread", since = "1.9.0")] ++#[cfg(feature="collections")] + impl BufRead for Chain { + fn fill_buf(&mut self) -> Result<&[u8]> { + if !self.done_first { +@@ -1484,7 +1446,6 @@ impl BufRead for Chain { + /// Please see the documentation of [`take()`] for more details. + /// + /// [`take()`]: trait.Read.html#method.take +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Take { + inner: T, + limit: u64, +@@ -1518,7 +1479,6 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn limit(&self) -> u64 { self.limit } + + /// Consumes the `Take`, returning the wrapped reader. +@@ -1543,13 +1503,11 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[unstable(feature = "io_take_into_inner", issue = "23755")] + pub fn into_inner(self) -> T { + self.inner + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Take { + fn read(&mut self, buf: &mut [u8]) -> Result { + // Don't call into inner reader at all at EOF because it may still block +@@ -1564,7 +1522,7 @@ impl Read for Take { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Take { + fn fill_buf(&mut self) -> Result<&[u8]> { + // Don't call into inner reader at all at EOF because it may still block +@@ -1603,12 +1561,10 @@ fn read_one_byte(reader: &mut Read) -> Option> { + /// Please see the documentation of [`bytes()`] for more details. + /// + /// [`bytes()`]: trait.Read.html#method.bytes +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Bytes { + inner: R, + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Iterator for Bytes { + type Item = Result; + +@@ -1623,8 +1579,6 @@ impl Iterator for Bytes { + /// Please see the documentation of `chars()` for more details. + /// + /// [chars]: trait.Read.html#method.chars +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + pub struct Chars { + inner: R, + } +@@ -1632,8 +1586,6 @@ pub struct Chars { + /// An enumeration of possible errors that can be generated from the `Chars` + /// adapter. + #[derive(Debug)] +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + pub enum CharsError { + /// Variant representing that the underlying stream was read successfully + /// but it did not contain valid utf8 data. +@@ -1643,8 +1595,6 @@ pub enum CharsError { + Other(Error), + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl Iterator for Chars { + type Item = result::Result; + +@@ -1676,25 +1626,6 @@ impl Iterator for Chars { + } + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] +-impl std_error::Error for CharsError { +- fn description(&self) -> &str { +- match *self { +- CharsError::NotUtf8 => "invalid utf8 encoding", +- CharsError::Other(ref e) => std_error::Error::description(e), +- } +- } +- fn cause(&self) -> Option<&std_error::Error> { +- match *self { +- CharsError::NotUtf8 => None, +- CharsError::Other(ref e) => e.cause(), +- } +- } +-} +- +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl fmt::Display for CharsError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + match *self { +@@ -1713,13 +1644,13 @@ impl fmt::Display for CharsError { + /// `BufRead`. Please see the documentation of `split()` for more details. + /// + /// [split]: trait.BufRead.html#method.split +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub struct Split { + buf: B, + delim: u8, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Split { + type Item = Result>; + +@@ -1744,12 +1675,12 @@ impl Iterator for Split { + /// `BufRead`. Please see the documentation of `lines()` for more details. + /// + /// [lines]: trait.BufRead.html#method.lines +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub struct Lines { + buf: B, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Lines { + type Item = Result; + +diff --git a/prelude.rs b/prelude.rs +index 8772d0f..49d66c9 100644 +--- a/prelude.rs ++++ b/prelude.rs +@@ -18,7 +18,8 @@ + //! use std::io::prelude::*; + //! ``` + +-#![stable(feature = "rust1", since = "1.0.0")] ++pub use super::{Read, Write, Seek}; ++#[cfg(feature="collections")] pub use super::BufRead; + +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use super::{Read, Write, BufRead, Seek}; ++#[cfg(feature="collections")] pub use alloc::boxed::Box; ++#[cfg(feature="collections")] pub use collections::vec::Vec; +diff --git a/util.rs b/util.rs +index 2c68802..93bcfc3 100644 +--- a/util.rs ++++ b/util.rs +@@ -10,7 +10,8 @@ + + #![allow(missing_copy_implementations)] + +-use io::{self, Read, Write, ErrorKind, BufRead}; ++use io::{self, Read, Write, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; + + /// Copies the entire contents of a reader into a writer. + /// +@@ -42,7 +43,6 @@ use io::{self, Read, Write, ErrorKind, BufRead}; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn copy(reader: &mut R, writer: &mut W) -> io::Result + where R: Read, W: Write + { +@@ -66,7 +66,6 @@ pub fn copy(reader: &mut R, writer: &mut W) -> io::Result< + /// the documentation of `empty()` for more details. + /// + /// [empty]: fn.empty.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Empty { _priv: () } + + /// Constructs a new handle to an empty reader. +@@ -84,14 +83,12 @@ pub struct Empty { _priv: () } + /// io::empty().read_to_string(&mut buffer).unwrap(); + /// assert!(buffer.is_empty()); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn empty() -> Empty { Empty { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Empty { + fn read(&mut self, _buf: &mut [u8]) -> io::Result { Ok(0) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Empty { + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(&[]) } + fn consume(&mut self, _n: usize) {} +@@ -103,7 +100,6 @@ impl BufRead for Empty { + /// see the documentation of `repeat()` for more details. + /// + /// [repeat]: fn.repeat.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Repeat { byte: u8 } + + /// Creates an instance of a reader that infinitely repeats one byte. +@@ -120,10 +116,8 @@ pub struct Repeat { byte: u8 } + /// io::repeat(0b101).read_exact(&mut buffer).unwrap(); + /// assert_eq!(buffer, [0b101, 0b101, 0b101]); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn repeat(byte: u8) -> Repeat { Repeat { byte: byte } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Repeat { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + for slot in &mut *buf { +@@ -139,7 +133,6 @@ impl Read for Repeat { + /// see the documentation of `sink()` for more details. + /// + /// [sink]: fn.sink.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Sink { _priv: () } + + /// Creates an instance of a writer which will successfully consume all data. +@@ -156,10 +149,8 @@ pub struct Sink { _priv: () } + /// let num_bytes = io::sink().write(&buffer).unwrap(); + /// assert_eq!(num_bytes, 5); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn sink() -> Sink { Sink { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for Sink { + fn write(&mut self, buf: &[u8]) -> io::Result { Ok(buf.len()) } + fn flush(&mut self) -> io::Result<()> { Ok(()) } diff --git a/patches/88badb98c74f764f6e4baea3f6c9d3fd16013023.patch b/patches/88badb98c74f764f6e4baea3f6c9d3fd16013023.patch new file mode 100644 index 0000000..a31fe5b --- /dev/null +++ b/patches/88badb98c74f764f6e4baea3f6c9d3fd16013023.patch @@ -0,0 +1,1510 @@ +diff --git a/buffered.rs b/buffered.rs +index f98a3a8..1601229 100644 +--- a/buffered.rs ++++ b/buffered.rs +@@ -10,13 +10,13 @@ + + //! Buffering wrappers for I/O traits + ++use core::prelude::v1::*; + use io::prelude::*; + +-use cmp; +-use error; +-use fmt; ++use core::cmp; ++use core::fmt; + use io::{self, DEFAULT_BUF_SIZE, Error, ErrorKind, SeekFrom}; +-use memchr; ++use io::memchr; + + /// The `BufReader` struct adds buffering to any reader. + /// +@@ -46,7 +46,6 @@ use memchr; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufReader { + inner: R, + buf: Box<[u8]>, +@@ -69,7 +68,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: R) -> BufReader { + BufReader::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -90,7 +88,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: R) -> BufReader { + BufReader { + inner: inner, +@@ -118,7 +115,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &R { &self.inner } + + /// Gets a mutable reference to the underlying reader. +@@ -139,7 +135,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut R { &mut self.inner } + + /// Unwraps this `BufReader`, returning the underlying reader. +@@ -160,11 +155,9 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> R { self.inner } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for BufReader { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + // If we don't have any buffered data and we're doing a massive read +@@ -182,7 +175,6 @@ impl Read for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl BufRead for BufReader { + fn fill_buf(&mut self) -> io::Result<&[u8]> { + // If we've reached the end of our internal buffer then we need to fetch +@@ -202,7 +194,6 @@ impl BufRead for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufReader where R: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufReader") +@@ -212,7 +203,6 @@ impl fmt::Debug for BufReader where R: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufReader { + /// Seek to an offset, in bytes, in the underlying reader. + /// +@@ -305,7 +295,6 @@ impl Seek for BufReader { + /// [`Write`]: ../../std/io/trait.Write.html + /// [`write`]: ../../std/net/struct.TcpStream.html#method.write + /// [`TcpStream`]: ../../std/net/struct.TcpStream.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufWriter { + inner: Option, + buf: Vec, +@@ -340,7 +329,6 @@ pub struct BufWriter { + /// }; + /// ``` + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct IntoInnerError(W, Error); + + impl BufWriter { +@@ -354,7 +342,6 @@ impl BufWriter { + /// + /// let mut buffer = BufWriter::new(TcpStream::connect("127.0.0.1:34254").unwrap()); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> BufWriter { + BufWriter::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -372,7 +359,6 @@ impl BufWriter { + /// let stream = TcpStream::connect("127.0.0.1:34254").unwrap(); + /// let mut buffer = BufWriter::with_capacity(100, stream); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> BufWriter { + BufWriter { + inner: Some(inner), +@@ -421,7 +407,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.as_ref().unwrap() } + + /// Gets a mutable reference to the underlying writer. +@@ -439,7 +424,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.as_mut().unwrap() } + + /// Unwraps this `BufWriter`, returning the underlying writer. +@@ -457,7 +441,6 @@ impl BufWriter { + /// // unwrap the TcpStream and flush the buffer + /// let stream = buffer.into_inner().unwrap(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(mut self) -> Result>> { + match self.flush_buf() { + Err(e) => Err(IntoInnerError(self, e)), +@@ -466,7 +449,6 @@ impl BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for BufWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.buf.len() + buf.len() > self.buf.capacity() { +@@ -486,7 +468,6 @@ impl Write for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufWriter") +@@ -496,7 +477,6 @@ impl fmt::Debug for BufWriter where W: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufWriter { + /// Seek to the offset, in bytes, in the underlying writer. + /// +@@ -506,7 +486,6 @@ impl Seek for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Drop for BufWriter { + fn drop(&mut self) { + if self.inner.is_some() && !self.panicked { +@@ -545,7 +524,6 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn error(&self) -> &Error { &self.1 } + + /// Returns the buffered writer instance which generated the error. +@@ -578,23 +556,13 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> W { self.0 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl From> for Error { + fn from(iie: IntoInnerError) -> Error { iie.1 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for IntoInnerError { +- fn description(&self) -> &str { +- error::Error::description(self.error()) +- } +-} +- +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for IntoInnerError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.error().fmt(f) +@@ -649,7 +617,6 @@ impl fmt::Display for IntoInnerError { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct LineWriter { + inner: BufWriter, + need_flush: bool, +@@ -670,7 +637,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> LineWriter { + // Lines typically aren't that long, don't use a giant buffer + LineWriter::with_capacity(1024, inner) +@@ -691,7 +657,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> LineWriter { + LineWriter { + inner: BufWriter::with_capacity(cap, inner), +@@ -715,7 +680,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.get_ref() } + + /// Gets a mutable reference to the underlying writer. +@@ -738,7 +702,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.get_mut() } + + /// Unwraps this `LineWriter`, returning the underlying writer. +@@ -760,7 +723,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> Result>> { + self.inner.into_inner().map_err(|IntoInnerError(buf, e)| { + IntoInnerError(LineWriter { +@@ -771,7 +733,6 @@ impl LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for LineWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.need_flush { +@@ -816,7 +777,6 @@ impl Write for LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for LineWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("LineWriter") +diff --git a/cursor.rs b/cursor.rs +index 53347eb..637f4e0 100644 +--- a/cursor.rs ++++ b/cursor.rs +@@ -8,10 +8,11 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + ++use core::prelude::v1::*; + use io::prelude::*; + +-use core::convert::TryInto; +-use cmp; ++#[cfg(feature = "collections")] use core::convert::TryInto; ++use core::cmp; + use io::{self, SeekFrom, Error, ErrorKind}; + + /// A `Cursor` wraps another type and provides it with a +@@ -79,7 +80,6 @@ use io::{self, SeekFrom, Error, ErrorKind}; + /// assert_eq!(&buff.get_ref()[5..15], &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]); + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Clone, Debug)] + pub struct Cursor { + inner: T, +@@ -102,7 +102,6 @@ impl Cursor { + /// # fn force_inference(_: &Cursor>) {} + /// # force_inference(&buff); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: T) -> Cursor { + Cursor { pos: 0, inner: inner } + } +@@ -120,7 +119,6 @@ impl Cursor { + /// + /// let vec = buff.into_inner(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> T { self.inner } + + /// Gets a reference to the underlying value in this cursor. +@@ -136,7 +134,6 @@ impl Cursor { + /// + /// let reference = buff.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &T { &self.inner } + + /// Gets a mutable reference to the underlying value in this cursor. +@@ -155,7 +152,6 @@ impl Cursor { + /// + /// let reference = buff.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut T { &mut self.inner } + + /// Returns the current position of this cursor. +@@ -177,7 +173,6 @@ impl Cursor { + /// buff.seek(SeekFrom::Current(-1)).unwrap(); + /// assert_eq!(buff.position(), 1); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn position(&self) -> u64 { self.pos } + + /// Sets the position of this cursor. +@@ -197,11 +192,9 @@ impl Cursor { + /// buff.set_position(4); + /// assert_eq!(buff.position(), 4); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn set_position(&mut self, pos: u64) { self.pos = pos; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl io::Seek for Cursor where T: AsRef<[u8]> { + fn seek(&mut self, style: SeekFrom) -> io::Result { + let (base_pos, offset) = match style { +@@ -222,25 +215,27 @@ impl io::Seek for Cursor where T: AsRef<[u8]> { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Cursor where T: AsRef<[u8]> { + fn read(&mut self, buf: &mut [u8]) -> io::Result { +- let n = Read::read(&mut self.fill_buf()?, buf)?; ++ let n = Read::read(&mut self.get_buf()?, buf)?; + self.pos += n as u64; + Ok(n) + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl BufRead for Cursor where T: AsRef<[u8]> { +- fn fill_buf(&mut self) -> io::Result<&[u8]> { ++impl Cursor where T: AsRef<[u8]> { ++ fn get_buf(&mut self) -> io::Result<&[u8]> { + let amt = cmp::min(self.pos, self.inner.as_ref().len() as u64); + Ok(&self.inner.as_ref()[(amt as usize)..]) + } ++} ++ ++#[cfg(feature = "collections")] ++impl BufRead for Cursor where T: AsRef<[u8]> { ++ fn fill_buf(&mut self) -> io::Result<&[u8]> { self.get_buf() } + fn consume(&mut self, amt: usize) { self.pos += amt as u64; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for Cursor<&'a mut [u8]> { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -252,7 +247,7 @@ impl<'a> Write for Cursor<&'a mut [u8]> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature = "collections")] + impl Write for Cursor> { + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos: usize = self.position().try_into().map_err(|_| { +@@ -282,8 +277,8 @@ impl Write for Cursor> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "cursor_box_slice", since = "1.5.0")] +-impl Write for Cursor> { ++#[cfg(feature = "alloc")] ++impl Write for Cursor<::alloc::boxed::Box<[u8]>> { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos = cmp::min(self.pos, self.inner.len() as u64); +diff --git a/error.rs b/error.rs +index fb67eaf..1c9f15e 100644 +--- a/error.rs ++++ b/error.rs +@@ -8,11 +8,16 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use error; +-use fmt; +-use result; +-use sys; +-use convert::From; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++#[cfg(not(feature="alloc"))] use ::FakeBox as Box; ++use core::convert::Into; ++use core::fmt; ++use core::marker::{Send, Sync}; ++use core::option::Option::{self, Some, None}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(not(feature="collections"))] use ::ErrorString as String; ++use core::convert::From; + + /// A specialized [`Result`](../result/enum.Result.html) type for I/O + /// operations. +@@ -44,7 +49,6 @@ use convert::From; + /// Ok(buffer) + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub type Result = result::Result; + + /// The error type for I/O operations of the `Read`, `Write`, `Seek`, and +@@ -56,7 +60,6 @@ pub type Result = result::Result; + /// + /// [`ErrorKind`]: enum.ErrorKind.html + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Error { + repr: Repr, + } +@@ -64,13 +67,16 @@ pub struct Error { + enum Repr { + Os(i32), + Simple(ErrorKind), ++ #[cfg(feature="alloc")] + Custom(Box), ++ #[cfg(not(feature="alloc"))] ++ Custom(Custom), + } + + #[derive(Debug)] + struct Custom { + kind: ErrorKind, +- error: Box, ++ error: String, + } + + /// A list specifying general categories of I/O error. +@@ -82,47 +88,34 @@ struct Custom { + /// + /// [`io::Error`]: struct.Error.html + #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)] +-#[stable(feature = "rust1", since = "1.0.0")] + #[allow(deprecated)] + pub enum ErrorKind { + /// An entity was not found, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + NotFound, + /// The operation lacked the necessary privileges to complete. +- #[stable(feature = "rust1", since = "1.0.0")] + PermissionDenied, + /// The connection was refused by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionRefused, + /// The connection was reset by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionReset, + /// The connection was aborted (terminated) by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionAborted, + /// The network operation failed because it was not connected yet. +- #[stable(feature = "rust1", since = "1.0.0")] + NotConnected, + /// A socket address could not be bound because the address is already in + /// use elsewhere. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrInUse, + /// A nonexistent interface was requested or the requested address was not + /// local. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrNotAvailable, + /// The operation failed because a pipe was closed. +- #[stable(feature = "rust1", since = "1.0.0")] + BrokenPipe, + /// An entity already exists, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + AlreadyExists, + /// The operation needs to block to complete, but the blocking operation was + /// requested to not occur. +- #[stable(feature = "rust1", since = "1.0.0")] + WouldBlock, + /// A parameter was incorrect. +- #[stable(feature = "rust1", since = "1.0.0")] + InvalidInput, + /// Data not valid for the operation were encountered. + /// +@@ -134,10 +127,8 @@ pub enum ErrorKind { + /// `InvalidData` if the file's contents are not valid UTF-8. + /// + /// [`InvalidInput`]: #variant.InvalidInput +- #[stable(feature = "io_invalid_data", since = "1.2.0")] + InvalidData, + /// The I/O operation's timeout expired, causing it to be canceled. +- #[stable(feature = "rust1", since = "1.0.0")] + TimedOut, + /// An error returned when an operation could not be completed because a + /// call to [`write`] returned [`Ok(0)`]. +@@ -148,15 +139,12 @@ pub enum ErrorKind { + /// + /// [`write`]: ../../std/io/trait.Write.html#tymethod.write + /// [`Ok(0)`]: ../../std/io/type.Result.html +- #[stable(feature = "rust1", since = "1.0.0")] + WriteZero, + /// This operation was interrupted. + /// + /// Interrupted operations can typically be retried. +- #[stable(feature = "rust1", since = "1.0.0")] + Interrupted, + /// Any I/O error not part of this list. +- #[stable(feature = "rust1", since = "1.0.0")] + Other, + + /// An error returned when an operation could not be completed because an +@@ -165,15 +153,10 @@ pub enum ErrorKind { + /// This typically means that an operation could only succeed if it read a + /// particular number of bytes but only a smaller number of bytes could be + /// read. +- #[stable(feature = "read_exact", since = "1.6.0")] + UnexpectedEof, + + /// A marker variant that tells the compiler that users of this enum cannot + /// match it exhaustively. +- #[unstable(feature = "io_error_internals", +- reason = "better expressed through extensible enums that this \ +- enum cannot be exhaustively matched against", +- issue = "0")] + #[doc(hidden)] + __Nonexhaustive, + } +@@ -206,7 +189,6 @@ impl ErrorKind { + + /// Intended for use for errors not exposed to the user, where allocating onto + /// the heap (for normal construction via Error::new) is too costly. +-#[stable(feature = "io_error_from_errorkind", since = "1.14.0")] + impl From for Error { + fn from(kind: ErrorKind) -> Error { + Error { +@@ -234,14 +216,13 @@ impl Error { + /// // errors can also be created from other errors + /// let custom_error2 = Error::new(ErrorKind::Interrupted, custom_error); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(kind: ErrorKind, error: E) -> Error +- where E: Into> ++ where E: Into + { + Self::_new(kind, error.into()) + } + +- fn _new(kind: ErrorKind, error: Box) -> Error { ++ fn _new(kind: ErrorKind, error: String) -> Error { + Error { + repr: Repr::Custom(Box::new(Custom { + kind: kind, +@@ -250,24 +231,6 @@ impl Error { + } + } + +- /// Returns an error representing the last OS error which occurred. +- /// +- /// This function reads the value of `errno` for the target platform (e.g. +- /// `GetLastError` on Windows) and will return a corresponding instance of +- /// `Error` for the error code. +- /// +- /// # Examples +- /// +- /// ``` +- /// use std::io::Error; +- /// +- /// println!("last OS error: {:?}", Error::last_os_error()); +- /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] +- pub fn last_os_error() -> Error { +- Error::from_raw_os_error(sys::os::errno() as i32) +- } +- + /// Creates a new instance of an `Error` from a particular OS error code. + /// + /// # Examples +@@ -293,7 +256,6 @@ impl Error { + /// assert_eq!(error.kind(), io::ErrorKind::AddrInUse); + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn from_raw_os_error(code: i32) -> Error { + Error { repr: Repr::Os(code) } + } +@@ -324,7 +286,6 @@ impl Error { + /// print_os_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn raw_os_error(&self) -> Option { + match self.repr { + Repr::Os(i) => Some(i), +@@ -358,12 +319,11 @@ impl Error { + /// print_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_ref(&self) -> Option<&(error::Error+Send+Sync+'static)> { ++ pub fn get_ref(&self) -> Option<&String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref c) => Some(&*c.error), ++ Repr::Custom(ref c) => Some(&c.error), + } + } + +@@ -429,12 +389,11 @@ impl Error { + /// print_error(&change_error(Error::new(ErrorKind::Other, MyError::new()))); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_mut(&mut self) -> Option<&mut (error::Error+Send+Sync+'static)> { ++ pub fn get_mut(&mut self) -> Option<&mut String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref mut c) => Some(&mut *c.error), ++ Repr::Custom(ref mut c) => Some(&mut c.error), + } + } + +@@ -463,8 +422,7 @@ impl Error { + /// print_error(Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn into_inner(self) -> Option> { ++ pub fn into_inner(self) -> Option { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +@@ -490,10 +448,9 @@ impl Error { + /// print_error(Error::new(ErrorKind::AddrInUse, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn kind(&self) -> ErrorKind { + match self.repr { +- Repr::Os(code) => sys::decode_error_kind(code), ++ Repr::Os(_code) => ErrorKind::Other, + Repr::Custom(ref c) => c.kind, + Repr::Simple(kind) => kind, + } +@@ -504,21 +461,18 @@ impl fmt::Debug for Repr { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match *self { + Repr::Os(ref code) => +- fmt.debug_struct("Os").field("code", code) +- .field("message", &sys::os::error_string(*code)).finish(), ++ fmt.debug_struct("Os").field("code", code).finish(), + Repr::Custom(ref c) => fmt.debug_tuple("Custom").field(c).finish(), + Repr::Simple(kind) => fmt.debug_tuple("Kind").field(&kind).finish(), + } + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for Error { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match self.repr { + Repr::Os(code) => { +- let detail = sys::os::error_string(code); +- write!(fmt, "{} (os error {})", detail, code) ++ write!(fmt, "os error {}", code) + } + Repr::Custom(ref c) => c.error.fmt(fmt), + Repr::Simple(kind) => write!(fmt, "{}", kind.as_str()), +@@ -526,24 +480,6 @@ impl fmt::Display for Error { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for Error { +- fn description(&self) -> &str { +- match self.repr { +- Repr::Os(..) | Repr::Simple(..) => self.kind().as_str(), +- Repr::Custom(ref c) => c.error.description(), +- } +- } +- +- fn cause(&self) -> Option<&error::Error> { +- match self.repr { +- Repr::Os(..) => None, +- Repr::Simple(..) => None, +- Repr::Custom(ref c) => c.error.cause(), +- } +- } +-} +- + fn _assert_error_is_sync_send() { + fn _is_sync_send() {} + _is_sync_send::(); +diff --git a/impls.rs b/impls.rs +index f691289..c4374d3 100644 +--- a/impls.rs ++++ b/impls.rs +@@ -8,26 +8,31 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use cmp; +-use io::{self, SeekFrom, Read, Write, Seek, BufRead, Error, ErrorKind}; +-use fmt; +-use mem; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++use core::cmp; ++use io::{self, SeekFrom, Read, Write, Seek, Error, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; ++use core::fmt; ++use core::mem; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(feature="collections")] use collections::vec::Vec; + + // ============================================================================= + // Forwarding implementations + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, R: Read + ?Sized> Read for &'a mut R { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -38,7 +43,6 @@ impl<'a, R: Read + ?Sized> Read for &'a mut R { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, W: Write + ?Sized> Write for &'a mut W { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -56,12 +60,11 @@ impl<'a, W: Write + ?Sized> Write for &'a mut W { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, S: Seek + ?Sized> Seek for &'a mut S { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -80,18 +83,20 @@ impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Read for Box { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -102,7 +107,7 @@ impl Read for Box { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Write for Box { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -120,12 +125,12 @@ impl Write for Box { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Seek for Box { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Box { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -151,7 +156,6 @@ impl BufRead for Box { + /// + /// Note that reading updates the slice to point to the yet unread part. + /// The slice will be empty when EOF is reached. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Read for &'a [u8] { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { +@@ -193,7 +197,7 @@ impl<'a> Read for &'a [u8] { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a> BufRead for &'a [u8] { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(*self) } +@@ -207,7 +211,6 @@ impl<'a> BufRead for &'a [u8] { + /// + /// Note that writing updates the slice to point to the yet unwritten part. + /// The slice will be empty when it has been completely overwritten. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for &'a mut [u8] { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -233,7 +236,7 @@ impl<'a> Write for &'a mut [u8] { + + /// Write is implemented for `Vec` by appending to the vector. + /// The vector will grow as needed. +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Write for Vec { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { +diff --git a/memchr.rs b/memchr.rs +index 3824a5f..312cf47 100644 +--- a/memchr.rs ++++ b/memchr.rs +@@ -11,10 +11,12 @@ + // Original implementation taken from rust-memchr + // Copyright 2015 Andrew Gallant, bluss and Nicolas Koch + ++pub use self::fallback::{memchr,memrchr}; ++ + #[allow(dead_code)] + pub mod fallback { +- use cmp; +- use mem; ++ use core::cmp; ++ use core::mem; + + const LO_U64: u64 = 0x0101010101010101; + const HI_U64: u64 = 0x8080808080808080; +diff --git a/mod.rs b/mod.rs +index 5b628d5..29ea975 100644 +--- a/mod.rs ++++ b/mod.rs +@@ -253,44 +253,34 @@ + //! [`?` operator]: ../../book/syntax-index.html + //! [`read`]: trait.Read.html#tymethod.read + +-#![stable(feature = "rust1", since = "1.0.0")] +- +-use cmp; ++use core::cmp; + use core::str as core_str; +-use error as std_error; +-use fmt; +-use result; +-use str; +-use memchr; +- +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::{BufReader, BufWriter, LineWriter}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::IntoInnerError; +-#[stable(feature = "rust1", since = "1.0.0")] ++use core::fmt; ++use core::iter::{Iterator}; ++use core::marker::Sized; ++#[cfg(feature="collections")] use core::ops::{Drop, FnOnce}; ++use core::option::Option::{self, Some, None}; ++use core::result::Result::{Ok, Err}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++use core::str; ++#[cfg(feature="collections")] use collections::vec::Vec; ++mod memchr; ++ ++#[cfg(feature="collections")] pub use self::buffered::{BufReader, BufWriter, LineWriter}; ++#[cfg(feature="collections")] pub use self::buffered::IntoInnerError; + pub use self::cursor::Cursor; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::error::{Result, Error, ErrorKind}; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::util::{copy, sink, Sink, empty, Empty, repeat, Repeat}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{stdin, stdout, stderr, _print, Stdin, Stdout, Stderr}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{StdoutLock, StderrLock, StdinLock}; +-#[unstable(feature = "libstd_io_internals", issue = "0")] +-#[doc(no_inline, hidden)] +-pub use self::stdio::{set_panic, set_print}; + + pub mod prelude; +-mod buffered; ++#[cfg(feature="collections")] mod buffered; + mod cursor; + mod error; + mod impls; +-mod lazy; + mod util; +-mod stdio; + +-const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; ++const DEFAULT_BUF_SIZE: usize = 8 * 1024; + + // A few methods below (read_to_string, read_line) will append data into a + // `String` buffer, but we need to be pretty careful when doing this. The +@@ -310,6 +300,7 @@ const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; + // 2. We're passing a raw buffer to the function `f`, and it is expected that + // the function only *appends* bytes to the buffer. We'll get undefined + // behavior if existing bytes are overwritten to have non-UTF-8 data. ++#[cfg(feature="collections")] + fn append_to_string(buf: &mut String, f: F) -> Result + where F: FnOnce(&mut Vec) -> Result + { +@@ -341,6 +332,7 @@ fn append_to_string(buf: &mut String, f: F) -> Result + // of data to return. Simply tacking on an extra DEFAULT_BUF_SIZE space every + // time is 4,500 times (!) slower than this if the reader has a very small + // amount of data to return. ++#[cfg(feature="collections")] + fn read_to_end(r: &mut R, buf: &mut Vec) -> Result { + let start_len = buf.len(); + let mut len = start_len; +@@ -423,7 +415,6 @@ fn read_to_end(r: &mut R, buf: &mut Vec) -> Result + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Read { + /// Pull some bytes from this source into the specified buffer, returning + /// how many bytes were read. +@@ -473,7 +464,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read(&mut self, buf: &mut [u8]) -> Result; + + /// Read all bytes until EOF in this source, placing them into `buf`. +@@ -515,7 +505,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_end(&mut self, buf: &mut Vec) -> Result { + read_to_end(self, buf) + } +@@ -553,7 +543,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_string(&mut self, buf: &mut String) -> Result { + // Note that we do *not* call `.read_to_end()` here. We are passing + // `&mut Vec` (the raw contents of `buf`) into the `read_to_end` +@@ -614,7 +604,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "read_exact", since = "1.6.0")] + fn read_exact(&mut self, mut buf: &mut [u8]) -> Result<()> { + while !buf.is_empty() { + match self.read(buf) { +@@ -666,7 +655,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + + /// Transforms this `Read` instance to an `Iterator` over its bytes. +@@ -696,7 +684,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn bytes(self) -> Bytes where Self: Sized { + Bytes { inner: self } + } +@@ -733,10 +720,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[unstable(feature = "io", reason = "the semantics of a partial read/write \ +- of where errors happen is currently \ +- unclear and may change", +- issue = "27802")] + fn chars(self) -> Chars where Self: Sized { + Chars { inner: self } + } +@@ -771,7 +754,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn chain(self, next: R) -> Chain where Self: Sized { + Chain { first: self, second: next, done_first: false } + } +@@ -805,7 +787,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn take(self, limit: u64) -> Take where Self: Sized { + Take { inner: self, limit: limit } + } +@@ -845,7 +826,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Write { + /// Write a buffer into this object, returning how many bytes were written. + /// +@@ -885,7 +865,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write(&mut self, buf: &[u8]) -> Result; + + /// Flush this output stream, ensuring that all intermediately buffered +@@ -911,7 +890,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn flush(&mut self) -> Result<()>; + + /// Attempts to write an entire buffer into this write. +@@ -938,7 +916,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_all(&mut self, mut buf: &[u8]) -> Result<()> { + while !buf.is_empty() { + match self.write(buf) { +@@ -990,7 +967,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_fmt(&mut self, fmt: fmt::Arguments) -> Result<()> { + // Create a shim which translates a Write to a fmt::Write and saves + // off I/O errors. instead of discarding them +@@ -1046,7 +1022,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + } + +@@ -1076,7 +1051,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Seek { + /// Seek to an offset, in bytes, in a stream. + /// +@@ -1092,7 +1066,6 @@ pub trait Seek { + /// Seeking to a negative offset is considered an error. + /// + /// [`SeekFrom::Start`]: enum.SeekFrom.html#variant.Start +- #[stable(feature = "rust1", since = "1.0.0")] + fn seek(&mut self, pos: SeekFrom) -> Result; + } + +@@ -1102,29 +1075,26 @@ pub trait Seek { + /// + /// [`Seek`]: trait.Seek.html + #[derive(Copy, PartialEq, Eq, Clone, Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub enum SeekFrom { + /// Set the offset to the provided number of bytes. +- #[stable(feature = "rust1", since = "1.0.0")] +- Start(#[stable(feature = "rust1", since = "1.0.0")] u64), ++ Start(u64), + + /// Set the offset to the size of this object plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- End(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ End(i64), + + /// Set the offset to the current position plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- Current(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ Current(i64), + } + ++#[cfg(feature="collections")] + fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + -> Result { + let mut read = 0; +@@ -1204,7 +1174,7 @@ fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + /// # } + /// ``` + /// +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub trait BufRead: Read { + /// Fills the internal buffer of this object, returning the buffer contents. + /// +@@ -1249,7 +1219,6 @@ pub trait BufRead: Read { + /// // ensure the bytes we worked with aren't returned again later + /// stdin.consume(length); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn fill_buf(&mut self) -> Result<&[u8]>; + + /// Tells this buffer that `amt` bytes have been consumed from the buffer, +@@ -1271,7 +1240,6 @@ pub trait BufRead: Read { + /// that method's example includes an example of `consume()`. + /// + /// [`fill_buf`]: #tymethod.fill_buf +- #[stable(feature = "rust1", since = "1.0.0")] + fn consume(&mut self, amt: usize); + + /// Read all bytes into `buf` until the delimiter `byte` or EOF is reached. +@@ -1327,7 +1295,6 @@ pub trait BufRead: Read { + /// assert_eq!(num_bytes, 0); + /// assert_eq!(buf, b""); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_until(&mut self, byte: u8, buf: &mut Vec) -> Result { + read_until(self, byte, buf) + } +@@ -1382,7 +1349,6 @@ pub trait BufRead: Read { + /// assert_eq!(num_bytes, 0); + /// assert_eq!(buf, ""); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_line(&mut self, buf: &mut String) -> Result { + // Note that we are not calling the `.read_until` method here, but + // rather our hardcoded implementation. For more details as to why, see +@@ -1423,7 +1389,6 @@ pub trait BufRead: Read { + /// assert_eq!(split_iter.next(), Some(b"dolor".to_vec())); + /// assert_eq!(split_iter.next(), None); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn split(self, byte: u8) -> Split where Self: Sized { + Split { buf: self, delim: byte } + } +@@ -1462,7 +1427,6 @@ pub trait BufRead: Read { + /// Each line of the iterator has the same error semantics as [`BufRead::read_line`]. + /// + /// [`BufRead::read_line`]: trait.BufRead.html#method.read_line +- #[stable(feature = "rust1", since = "1.0.0")] + fn lines(self) -> Lines where Self: Sized { + Lines { buf: self } + } +@@ -1474,14 +1438,12 @@ pub trait BufRead: Read { + /// Please see the documentation of [`chain`] for more details. + /// + /// [`chain`]: trait.Read.html#method.chain +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Chain { + first: T, + second: U, + done_first: bool, + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Chain { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.debug_struct("Chain") +@@ -1491,7 +1453,6 @@ impl fmt::Debug for Chain { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Chain { + fn read(&mut self, buf: &mut [u8]) -> Result { + if !self.done_first { +@@ -1504,7 +1465,7 @@ impl Read for Chain { + } + } + +-#[stable(feature = "chain_bufread", since = "1.9.0")] ++#[cfg(feature="collections")] + impl BufRead for Chain { + fn fill_buf(&mut self) -> Result<&[u8]> { + if !self.done_first { +@@ -1531,7 +1492,6 @@ impl BufRead for Chain { + /// Please see the documentation of [`take`] for more details. + /// + /// [`take`]: trait.Read.html#method.take +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Debug)] + pub struct Take { + inner: T, +@@ -1566,7 +1526,6 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn limit(&self) -> u64 { self.limit } + + /// Consumes the `Take`, returning the wrapped reader. +@@ -1589,13 +1548,11 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "io_take_into_inner", since = "1.15.0")] + pub fn into_inner(self) -> T { + self.inner + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Take { + fn read(&mut self, buf: &mut [u8]) -> Result { + // Don't call into inner reader at all at EOF because it may still block +@@ -1610,7 +1567,7 @@ impl Read for Take { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Take { + fn fill_buf(&mut self) -> Result<&[u8]> { + // Don't call into inner reader at all at EOF because it may still block +@@ -1649,13 +1606,11 @@ fn read_one_byte(reader: &mut Read) -> Option> { + /// Please see the documentation of [`bytes`] for more details. + /// + /// [`bytes`]: trait.Read.html#method.bytes +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Debug)] + pub struct Bytes { + inner: R, + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Iterator for Bytes { + type Item = Result; + +@@ -1670,8 +1625,6 @@ impl Iterator for Bytes { + /// Please see the documentation of `chars()` for more details. + /// + /// [chars]: trait.Read.html#method.chars +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + #[derive(Debug)] + pub struct Chars { + inner: R, +@@ -1680,8 +1633,6 @@ pub struct Chars { + /// An enumeration of possible errors that can be generated from the `Chars` + /// adapter. + #[derive(Debug)] +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + pub enum CharsError { + /// Variant representing that the underlying stream was read successfully + /// but it did not contain valid utf8 data. +@@ -1691,8 +1642,6 @@ pub enum CharsError { + Other(Error), + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl Iterator for Chars { + type Item = result::Result; + +@@ -1724,25 +1673,6 @@ impl Iterator for Chars { + } + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] +-impl std_error::Error for CharsError { +- fn description(&self) -> &str { +- match *self { +- CharsError::NotUtf8 => "invalid utf8 encoding", +- CharsError::Other(ref e) => std_error::Error::description(e), +- } +- } +- fn cause(&self) -> Option<&std_error::Error> { +- match *self { +- CharsError::NotUtf8 => None, +- CharsError::Other(ref e) => e.cause(), +- } +- } +-} +- +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl fmt::Display for CharsError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + match *self { +@@ -1761,14 +1691,14 @@ impl fmt::Display for CharsError { + /// `BufRead`. Please see the documentation of `split()` for more details. + /// + /// [split]: trait.BufRead.html#method.split +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + #[derive(Debug)] + pub struct Split { + buf: B, + delim: u8, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Split { + type Item = Result>; + +@@ -1793,13 +1723,13 @@ impl Iterator for Split { + /// `BufRead`. Please see the documentation of `lines()` for more details. + /// + /// [lines]: trait.BufRead.html#method.lines +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + #[derive(Debug)] + pub struct Lines { + buf: B, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Lines { + type Item = Result; + +diff --git a/prelude.rs b/prelude.rs +index 8772d0f..49d66c9 100644 +--- a/prelude.rs ++++ b/prelude.rs +@@ -18,7 +18,8 @@ + //! use std::io::prelude::*; + //! ``` + +-#![stable(feature = "rust1", since = "1.0.0")] ++pub use super::{Read, Write, Seek}; ++#[cfg(feature="collections")] pub use super::BufRead; + +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use super::{Read, Write, BufRead, Seek}; ++#[cfg(feature="collections")] pub use alloc::boxed::Box; ++#[cfg(feature="collections")] pub use collections::vec::Vec; +diff --git a/util.rs b/util.rs +index 078f1ad..fd13c98 100644 +--- a/util.rs ++++ b/util.rs +@@ -10,8 +10,9 @@ + + #![allow(missing_copy_implementations)] + +-use fmt; +-use io::{self, Read, Write, ErrorKind, BufRead}; ++use core::fmt; ++use io::{self, Read, Write, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; + + /// Copies the entire contents of a reader into a writer. + /// +@@ -43,7 +44,6 @@ use io::{self, Read, Write, ErrorKind, BufRead}; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn copy(reader: &mut R, writer: &mut W) -> io::Result + where R: Read, W: Write + { +@@ -67,7 +67,6 @@ pub fn copy(reader: &mut R, writer: &mut W) -> io::Result< + /// the documentation of `empty()` for more details. + /// + /// [empty]: fn.empty.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Empty { _priv: () } + + /// Constructs a new handle to an empty reader. +@@ -85,20 +84,18 @@ pub struct Empty { _priv: () } + /// io::empty().read_to_string(&mut buffer).unwrap(); + /// assert!(buffer.is_empty()); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn empty() -> Empty { Empty { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Empty { + fn read(&mut self, _buf: &mut [u8]) -> io::Result { Ok(0) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++ ++#[cfg(feature="collections")] + impl BufRead for Empty { + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(&[]) } + fn consume(&mut self, _n: usize) {} + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Empty { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Empty { .. }") +@@ -111,7 +108,6 @@ impl fmt::Debug for Empty { + /// see the documentation of `repeat()` for more details. + /// + /// [repeat]: fn.repeat.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Repeat { byte: u8 } + + /// Creates an instance of a reader that infinitely repeats one byte. +@@ -128,10 +124,8 @@ pub struct Repeat { byte: u8 } + /// io::repeat(0b101).read_exact(&mut buffer).unwrap(); + /// assert_eq!(buffer, [0b101, 0b101, 0b101]); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn repeat(byte: u8) -> Repeat { Repeat { byte: byte } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Repeat { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + for slot in &mut *buf { +@@ -141,7 +135,6 @@ impl Read for Repeat { + } + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Repeat { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Repeat { .. }") +@@ -154,7 +147,6 @@ impl fmt::Debug for Repeat { + /// see the documentation of `sink()` for more details. + /// + /// [sink]: fn.sink.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Sink { _priv: () } + + /// Creates an instance of a writer which will successfully consume all data. +@@ -171,16 +163,13 @@ pub struct Sink { _priv: () } + /// let num_bytes = io::sink().write(&buffer).unwrap(); + /// assert_eq!(num_bytes, 5); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn sink() -> Sink { Sink { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for Sink { + fn write(&mut self, buf: &[u8]) -> io::Result { Ok(buf.len()) } + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Sink { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Sink { .. }") diff --git a/patches/8fba638b08eb85cda1bd2a4e855f7f76727dfc52.patch b/patches/8fba638b08eb85cda1bd2a4e855f7f76727dfc52.patch new file mode 100644 index 0000000..7219b62 --- /dev/null +++ b/patches/8fba638b08eb85cda1bd2a4e855f7f76727dfc52.patch @@ -0,0 +1,1510 @@ +diff --git a/buffered.rs b/buffered.rs +index f98a3a8..1601229 100644 +--- a/buffered.rs ++++ b/buffered.rs +@@ -10,13 +10,13 @@ + + //! Buffering wrappers for I/O traits + ++use core::prelude::v1::*; + use io::prelude::*; + +-use cmp; +-use error; +-use fmt; ++use core::cmp; ++use core::fmt; + use io::{self, DEFAULT_BUF_SIZE, Error, ErrorKind, SeekFrom}; +-use memchr; ++use io::memchr; + + /// The `BufReader` struct adds buffering to any reader. + /// +@@ -46,7 +46,6 @@ use memchr; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufReader { + inner: R, + buf: Box<[u8]>, +@@ -69,7 +68,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: R) -> BufReader { + BufReader::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -90,7 +88,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: R) -> BufReader { + BufReader { + inner: inner, +@@ -118,7 +115,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &R { &self.inner } + + /// Gets a mutable reference to the underlying reader. +@@ -139,7 +135,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut R { &mut self.inner } + + /// Unwraps this `BufReader`, returning the underlying reader. +@@ -160,11 +155,9 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> R { self.inner } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for BufReader { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + // If we don't have any buffered data and we're doing a massive read +@@ -182,7 +175,6 @@ impl Read for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl BufRead for BufReader { + fn fill_buf(&mut self) -> io::Result<&[u8]> { + // If we've reached the end of our internal buffer then we need to fetch +@@ -202,7 +194,6 @@ impl BufRead for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufReader where R: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufReader") +@@ -212,7 +203,6 @@ impl fmt::Debug for BufReader where R: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufReader { + /// Seek to an offset, in bytes, in the underlying reader. + /// +@@ -305,7 +295,6 @@ impl Seek for BufReader { + /// [`Write`]: ../../std/io/trait.Write.html + /// [`write`]: ../../std/net/struct.TcpStream.html#method.write + /// [`TcpStream`]: ../../std/net/struct.TcpStream.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufWriter { + inner: Option, + buf: Vec, +@@ -340,7 +329,6 @@ pub struct BufWriter { + /// }; + /// ``` + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct IntoInnerError(W, Error); + + impl BufWriter { +@@ -354,7 +342,6 @@ impl BufWriter { + /// + /// let mut buffer = BufWriter::new(TcpStream::connect("127.0.0.1:34254").unwrap()); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> BufWriter { + BufWriter::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -372,7 +359,6 @@ impl BufWriter { + /// let stream = TcpStream::connect("127.0.0.1:34254").unwrap(); + /// let mut buffer = BufWriter::with_capacity(100, stream); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> BufWriter { + BufWriter { + inner: Some(inner), +@@ -421,7 +407,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.as_ref().unwrap() } + + /// Gets a mutable reference to the underlying writer. +@@ -439,7 +424,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.as_mut().unwrap() } + + /// Unwraps this `BufWriter`, returning the underlying writer. +@@ -457,7 +441,6 @@ impl BufWriter { + /// // unwrap the TcpStream and flush the buffer + /// let stream = buffer.into_inner().unwrap(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(mut self) -> Result>> { + match self.flush_buf() { + Err(e) => Err(IntoInnerError(self, e)), +@@ -466,7 +449,6 @@ impl BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for BufWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.buf.len() + buf.len() > self.buf.capacity() { +@@ -486,7 +468,6 @@ impl Write for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufWriter") +@@ -496,7 +477,6 @@ impl fmt::Debug for BufWriter where W: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufWriter { + /// Seek to the offset, in bytes, in the underlying writer. + /// +@@ -506,7 +486,6 @@ impl Seek for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Drop for BufWriter { + fn drop(&mut self) { + if self.inner.is_some() && !self.panicked { +@@ -545,7 +524,6 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn error(&self) -> &Error { &self.1 } + + /// Returns the buffered writer instance which generated the error. +@@ -578,23 +556,13 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> W { self.0 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl From> for Error { + fn from(iie: IntoInnerError) -> Error { iie.1 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for IntoInnerError { +- fn description(&self) -> &str { +- error::Error::description(self.error()) +- } +-} +- +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for IntoInnerError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.error().fmt(f) +@@ -649,7 +617,6 @@ impl fmt::Display for IntoInnerError { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct LineWriter { + inner: BufWriter, + need_flush: bool, +@@ -670,7 +637,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> LineWriter { + // Lines typically aren't that long, don't use a giant buffer + LineWriter::with_capacity(1024, inner) +@@ -691,7 +657,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> LineWriter { + LineWriter { + inner: BufWriter::with_capacity(cap, inner), +@@ -715,7 +680,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.get_ref() } + + /// Gets a mutable reference to the underlying writer. +@@ -738,7 +702,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.get_mut() } + + /// Unwraps this `LineWriter`, returning the underlying writer. +@@ -760,7 +723,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> Result>> { + self.inner.into_inner().map_err(|IntoInnerError(buf, e)| { + IntoInnerError(LineWriter { +@@ -771,7 +733,6 @@ impl LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for LineWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.need_flush { +@@ -816,7 +777,6 @@ impl Write for LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for LineWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("LineWriter") +diff --git a/cursor.rs b/cursor.rs +index 60767ea..199cad1 100644 +--- a/cursor.rs ++++ b/cursor.rs +@@ -8,10 +8,11 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + ++use core::prelude::v1::*; + use io::prelude::*; + +-use core::convert::TryInto; +-use cmp; ++#[cfg(feature = "collections")] use core::convert::TryInto; ++use core::cmp; + use io::{self, SeekFrom, Error, ErrorKind}; + + /// A `Cursor` wraps another type and provides it with a +@@ -79,7 +80,6 @@ use io::{self, SeekFrom, Error, ErrorKind}; + /// assert_eq!(&buff.get_ref()[5..15], &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]); + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Clone, Debug)] + pub struct Cursor { + inner: T, +@@ -98,7 +98,6 @@ impl Cursor { + /// # fn force_inference(_: &Cursor>) {} + /// # force_inference(&buff); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: T) -> Cursor { + Cursor { pos: 0, inner: inner } + } +@@ -116,7 +115,6 @@ impl Cursor { + /// + /// let vec = buff.into_inner(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> T { self.inner } + + /// Gets a reference to the underlying value in this cursor. +@@ -132,7 +130,6 @@ impl Cursor { + /// + /// let reference = buff.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &T { &self.inner } + + /// Gets a mutable reference to the underlying value in this cursor. +@@ -151,7 +148,6 @@ impl Cursor { + /// + /// let reference = buff.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut T { &mut self.inner } + + /// Returns the current position of this cursor. +@@ -173,7 +169,6 @@ impl Cursor { + /// buff.seek(SeekFrom::Current(-1)).unwrap(); + /// assert_eq!(buff.position(), 1); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn position(&self) -> u64 { self.pos } + + /// Sets the position of this cursor. +@@ -193,11 +188,9 @@ impl Cursor { + /// buff.set_position(4); + /// assert_eq!(buff.position(), 4); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn set_position(&mut self, pos: u64) { self.pos = pos; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl io::Seek for Cursor where T: AsRef<[u8]> { + fn seek(&mut self, style: SeekFrom) -> io::Result { + let (base_pos, offset) = match style { +@@ -218,25 +211,27 @@ impl io::Seek for Cursor where T: AsRef<[u8]> { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Cursor where T: AsRef<[u8]> { + fn read(&mut self, buf: &mut [u8]) -> io::Result { +- let n = Read::read(&mut self.fill_buf()?, buf)?; ++ let n = Read::read(&mut self.get_buf()?, buf)?; + self.pos += n as u64; + Ok(n) + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl BufRead for Cursor where T: AsRef<[u8]> { +- fn fill_buf(&mut self) -> io::Result<&[u8]> { ++impl Cursor where T: AsRef<[u8]> { ++ fn get_buf(&mut self) -> io::Result<&[u8]> { + let amt = cmp::min(self.pos, self.inner.as_ref().len() as u64); + Ok(&self.inner.as_ref()[(amt as usize)..]) + } ++} ++ ++#[cfg(feature = "collections")] ++impl BufRead for Cursor where T: AsRef<[u8]> { ++ fn fill_buf(&mut self) -> io::Result<&[u8]> { self.get_buf() } + fn consume(&mut self, amt: usize) { self.pos += amt as u64; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for Cursor<&'a mut [u8]> { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -248,7 +243,7 @@ impl<'a> Write for Cursor<&'a mut [u8]> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature = "collections")] + impl Write for Cursor> { + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos: usize = self.position().try_into().map_err(|_| { +@@ -278,8 +273,8 @@ impl Write for Cursor> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "cursor_box_slice", since = "1.5.0")] +-impl Write for Cursor> { ++#[cfg(feature = "alloc")] ++impl Write for Cursor<::alloc::boxed::Box<[u8]>> { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos = cmp::min(self.pos, self.inner.len() as u64); +diff --git a/error.rs b/error.rs +index fb67eaf..1c9f15e 100644 +--- a/error.rs ++++ b/error.rs +@@ -8,11 +8,16 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use error; +-use fmt; +-use result; +-use sys; +-use convert::From; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++#[cfg(not(feature="alloc"))] use ::FakeBox as Box; ++use core::convert::Into; ++use core::fmt; ++use core::marker::{Send, Sync}; ++use core::option::Option::{self, Some, None}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(not(feature="collections"))] use ::ErrorString as String; ++use core::convert::From; + + /// A specialized [`Result`](../result/enum.Result.html) type for I/O + /// operations. +@@ -44,7 +49,6 @@ use convert::From; + /// Ok(buffer) + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub type Result = result::Result; + + /// The error type for I/O operations of the `Read`, `Write`, `Seek`, and +@@ -56,7 +60,6 @@ pub type Result = result::Result; + /// + /// [`ErrorKind`]: enum.ErrorKind.html + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Error { + repr: Repr, + } +@@ -64,13 +67,16 @@ pub struct Error { + enum Repr { + Os(i32), + Simple(ErrorKind), ++ #[cfg(feature="alloc")] + Custom(Box), ++ #[cfg(not(feature="alloc"))] ++ Custom(Custom), + } + + #[derive(Debug)] + struct Custom { + kind: ErrorKind, +- error: Box, ++ error: String, + } + + /// A list specifying general categories of I/O error. +@@ -82,47 +88,34 @@ struct Custom { + /// + /// [`io::Error`]: struct.Error.html + #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)] +-#[stable(feature = "rust1", since = "1.0.0")] + #[allow(deprecated)] + pub enum ErrorKind { + /// An entity was not found, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + NotFound, + /// The operation lacked the necessary privileges to complete. +- #[stable(feature = "rust1", since = "1.0.0")] + PermissionDenied, + /// The connection was refused by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionRefused, + /// The connection was reset by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionReset, + /// The connection was aborted (terminated) by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionAborted, + /// The network operation failed because it was not connected yet. +- #[stable(feature = "rust1", since = "1.0.0")] + NotConnected, + /// A socket address could not be bound because the address is already in + /// use elsewhere. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrInUse, + /// A nonexistent interface was requested or the requested address was not + /// local. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrNotAvailable, + /// The operation failed because a pipe was closed. +- #[stable(feature = "rust1", since = "1.0.0")] + BrokenPipe, + /// An entity already exists, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + AlreadyExists, + /// The operation needs to block to complete, but the blocking operation was + /// requested to not occur. +- #[stable(feature = "rust1", since = "1.0.0")] + WouldBlock, + /// A parameter was incorrect. +- #[stable(feature = "rust1", since = "1.0.0")] + InvalidInput, + /// Data not valid for the operation were encountered. + /// +@@ -134,10 +127,8 @@ pub enum ErrorKind { + /// `InvalidData` if the file's contents are not valid UTF-8. + /// + /// [`InvalidInput`]: #variant.InvalidInput +- #[stable(feature = "io_invalid_data", since = "1.2.0")] + InvalidData, + /// The I/O operation's timeout expired, causing it to be canceled. +- #[stable(feature = "rust1", since = "1.0.0")] + TimedOut, + /// An error returned when an operation could not be completed because a + /// call to [`write`] returned [`Ok(0)`]. +@@ -148,15 +139,12 @@ pub enum ErrorKind { + /// + /// [`write`]: ../../std/io/trait.Write.html#tymethod.write + /// [`Ok(0)`]: ../../std/io/type.Result.html +- #[stable(feature = "rust1", since = "1.0.0")] + WriteZero, + /// This operation was interrupted. + /// + /// Interrupted operations can typically be retried. +- #[stable(feature = "rust1", since = "1.0.0")] + Interrupted, + /// Any I/O error not part of this list. +- #[stable(feature = "rust1", since = "1.0.0")] + Other, + + /// An error returned when an operation could not be completed because an +@@ -165,15 +153,10 @@ pub enum ErrorKind { + /// This typically means that an operation could only succeed if it read a + /// particular number of bytes but only a smaller number of bytes could be + /// read. +- #[stable(feature = "read_exact", since = "1.6.0")] + UnexpectedEof, + + /// A marker variant that tells the compiler that users of this enum cannot + /// match it exhaustively. +- #[unstable(feature = "io_error_internals", +- reason = "better expressed through extensible enums that this \ +- enum cannot be exhaustively matched against", +- issue = "0")] + #[doc(hidden)] + __Nonexhaustive, + } +@@ -206,7 +189,6 @@ impl ErrorKind { + + /// Intended for use for errors not exposed to the user, where allocating onto + /// the heap (for normal construction via Error::new) is too costly. +-#[stable(feature = "io_error_from_errorkind", since = "1.14.0")] + impl From for Error { + fn from(kind: ErrorKind) -> Error { + Error { +@@ -234,14 +216,13 @@ impl Error { + /// // errors can also be created from other errors + /// let custom_error2 = Error::new(ErrorKind::Interrupted, custom_error); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(kind: ErrorKind, error: E) -> Error +- where E: Into> ++ where E: Into + { + Self::_new(kind, error.into()) + } + +- fn _new(kind: ErrorKind, error: Box) -> Error { ++ fn _new(kind: ErrorKind, error: String) -> Error { + Error { + repr: Repr::Custom(Box::new(Custom { + kind: kind, +@@ -250,24 +231,6 @@ impl Error { + } + } + +- /// Returns an error representing the last OS error which occurred. +- /// +- /// This function reads the value of `errno` for the target platform (e.g. +- /// `GetLastError` on Windows) and will return a corresponding instance of +- /// `Error` for the error code. +- /// +- /// # Examples +- /// +- /// ``` +- /// use std::io::Error; +- /// +- /// println!("last OS error: {:?}", Error::last_os_error()); +- /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] +- pub fn last_os_error() -> Error { +- Error::from_raw_os_error(sys::os::errno() as i32) +- } +- + /// Creates a new instance of an `Error` from a particular OS error code. + /// + /// # Examples +@@ -293,7 +256,6 @@ impl Error { + /// assert_eq!(error.kind(), io::ErrorKind::AddrInUse); + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn from_raw_os_error(code: i32) -> Error { + Error { repr: Repr::Os(code) } + } +@@ -324,7 +286,6 @@ impl Error { + /// print_os_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn raw_os_error(&self) -> Option { + match self.repr { + Repr::Os(i) => Some(i), +@@ -358,12 +319,11 @@ impl Error { + /// print_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_ref(&self) -> Option<&(error::Error+Send+Sync+'static)> { ++ pub fn get_ref(&self) -> Option<&String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref c) => Some(&*c.error), ++ Repr::Custom(ref c) => Some(&c.error), + } + } + +@@ -429,12 +389,11 @@ impl Error { + /// print_error(&change_error(Error::new(ErrorKind::Other, MyError::new()))); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_mut(&mut self) -> Option<&mut (error::Error+Send+Sync+'static)> { ++ pub fn get_mut(&mut self) -> Option<&mut String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref mut c) => Some(&mut *c.error), ++ Repr::Custom(ref mut c) => Some(&mut c.error), + } + } + +@@ -463,8 +422,7 @@ impl Error { + /// print_error(Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn into_inner(self) -> Option> { ++ pub fn into_inner(self) -> Option { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +@@ -490,10 +448,9 @@ impl Error { + /// print_error(Error::new(ErrorKind::AddrInUse, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn kind(&self) -> ErrorKind { + match self.repr { +- Repr::Os(code) => sys::decode_error_kind(code), ++ Repr::Os(_code) => ErrorKind::Other, + Repr::Custom(ref c) => c.kind, + Repr::Simple(kind) => kind, + } +@@ -504,21 +461,18 @@ impl fmt::Debug for Repr { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match *self { + Repr::Os(ref code) => +- fmt.debug_struct("Os").field("code", code) +- .field("message", &sys::os::error_string(*code)).finish(), ++ fmt.debug_struct("Os").field("code", code).finish(), + Repr::Custom(ref c) => fmt.debug_tuple("Custom").field(c).finish(), + Repr::Simple(kind) => fmt.debug_tuple("Kind").field(&kind).finish(), + } + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for Error { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match self.repr { + Repr::Os(code) => { +- let detail = sys::os::error_string(code); +- write!(fmt, "{} (os error {})", detail, code) ++ write!(fmt, "os error {}", code) + } + Repr::Custom(ref c) => c.error.fmt(fmt), + Repr::Simple(kind) => write!(fmt, "{}", kind.as_str()), +@@ -526,24 +480,6 @@ impl fmt::Display for Error { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for Error { +- fn description(&self) -> &str { +- match self.repr { +- Repr::Os(..) | Repr::Simple(..) => self.kind().as_str(), +- Repr::Custom(ref c) => c.error.description(), +- } +- } +- +- fn cause(&self) -> Option<&error::Error> { +- match self.repr { +- Repr::Os(..) => None, +- Repr::Simple(..) => None, +- Repr::Custom(ref c) => c.error.cause(), +- } +- } +-} +- + fn _assert_error_is_sync_send() { + fn _is_sync_send() {} + _is_sync_send::(); +diff --git a/impls.rs b/impls.rs +index f691289..c4374d3 100644 +--- a/impls.rs ++++ b/impls.rs +@@ -8,26 +8,31 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use cmp; +-use io::{self, SeekFrom, Read, Write, Seek, BufRead, Error, ErrorKind}; +-use fmt; +-use mem; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++use core::cmp; ++use io::{self, SeekFrom, Read, Write, Seek, Error, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; ++use core::fmt; ++use core::mem; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(feature="collections")] use collections::vec::Vec; + + // ============================================================================= + // Forwarding implementations + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, R: Read + ?Sized> Read for &'a mut R { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -38,7 +43,6 @@ impl<'a, R: Read + ?Sized> Read for &'a mut R { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, W: Write + ?Sized> Write for &'a mut W { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -56,12 +60,11 @@ impl<'a, W: Write + ?Sized> Write for &'a mut W { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, S: Seek + ?Sized> Seek for &'a mut S { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -80,18 +83,20 @@ impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Read for Box { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -102,7 +107,7 @@ impl Read for Box { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Write for Box { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -120,12 +125,12 @@ impl Write for Box { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Seek for Box { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Box { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -151,7 +156,6 @@ impl BufRead for Box { + /// + /// Note that reading updates the slice to point to the yet unread part. + /// The slice will be empty when EOF is reached. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Read for &'a [u8] { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { +@@ -193,7 +197,7 @@ impl<'a> Read for &'a [u8] { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a> BufRead for &'a [u8] { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(*self) } +@@ -207,7 +211,6 @@ impl<'a> BufRead for &'a [u8] { + /// + /// Note that writing updates the slice to point to the yet unwritten part. + /// The slice will be empty when it has been completely overwritten. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for &'a mut [u8] { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -233,7 +236,7 @@ impl<'a> Write for &'a mut [u8] { + + /// Write is implemented for `Vec` by appending to the vector. + /// The vector will grow as needed. +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Write for Vec { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { +diff --git a/memchr.rs b/memchr.rs +index 3824a5f..312cf47 100644 +--- a/memchr.rs ++++ b/memchr.rs +@@ -11,10 +11,12 @@ + // Original implementation taken from rust-memchr + // Copyright 2015 Andrew Gallant, bluss and Nicolas Koch + ++pub use self::fallback::{memchr,memrchr}; ++ + #[allow(dead_code)] + pub mod fallback { +- use cmp; +- use mem; ++ use core::cmp; ++ use core::mem; + + const LO_U64: u64 = 0x0101010101010101; + const HI_U64: u64 = 0x8080808080808080; +diff --git a/mod.rs b/mod.rs +index 5b628d5..29ea975 100644 +--- a/mod.rs ++++ b/mod.rs +@@ -253,44 +253,34 @@ + //! [`?` operator]: ../../book/syntax-index.html + //! [`read`]: trait.Read.html#tymethod.read + +-#![stable(feature = "rust1", since = "1.0.0")] +- +-use cmp; ++use core::cmp; + use core::str as core_str; +-use error as std_error; +-use fmt; +-use result; +-use str; +-use memchr; +- +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::{BufReader, BufWriter, LineWriter}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::IntoInnerError; +-#[stable(feature = "rust1", since = "1.0.0")] ++use core::fmt; ++use core::iter::{Iterator}; ++use core::marker::Sized; ++#[cfg(feature="collections")] use core::ops::{Drop, FnOnce}; ++use core::option::Option::{self, Some, None}; ++use core::result::Result::{Ok, Err}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++use core::str; ++#[cfg(feature="collections")] use collections::vec::Vec; ++mod memchr; ++ ++#[cfg(feature="collections")] pub use self::buffered::{BufReader, BufWriter, LineWriter}; ++#[cfg(feature="collections")] pub use self::buffered::IntoInnerError; + pub use self::cursor::Cursor; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::error::{Result, Error, ErrorKind}; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::util::{copy, sink, Sink, empty, Empty, repeat, Repeat}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{stdin, stdout, stderr, _print, Stdin, Stdout, Stderr}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{StdoutLock, StderrLock, StdinLock}; +-#[unstable(feature = "libstd_io_internals", issue = "0")] +-#[doc(no_inline, hidden)] +-pub use self::stdio::{set_panic, set_print}; + + pub mod prelude; +-mod buffered; ++#[cfg(feature="collections")] mod buffered; + mod cursor; + mod error; + mod impls; +-mod lazy; + mod util; +-mod stdio; + +-const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; ++const DEFAULT_BUF_SIZE: usize = 8 * 1024; + + // A few methods below (read_to_string, read_line) will append data into a + // `String` buffer, but we need to be pretty careful when doing this. The +@@ -310,6 +300,7 @@ const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; + // 2. We're passing a raw buffer to the function `f`, and it is expected that + // the function only *appends* bytes to the buffer. We'll get undefined + // behavior if existing bytes are overwritten to have non-UTF-8 data. ++#[cfg(feature="collections")] + fn append_to_string(buf: &mut String, f: F) -> Result + where F: FnOnce(&mut Vec) -> Result + { +@@ -341,6 +332,7 @@ fn append_to_string(buf: &mut String, f: F) -> Result + // of data to return. Simply tacking on an extra DEFAULT_BUF_SIZE space every + // time is 4,500 times (!) slower than this if the reader has a very small + // amount of data to return. ++#[cfg(feature="collections")] + fn read_to_end(r: &mut R, buf: &mut Vec) -> Result { + let start_len = buf.len(); + let mut len = start_len; +@@ -423,7 +415,6 @@ fn read_to_end(r: &mut R, buf: &mut Vec) -> Result + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Read { + /// Pull some bytes from this source into the specified buffer, returning + /// how many bytes were read. +@@ -473,7 +464,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read(&mut self, buf: &mut [u8]) -> Result; + + /// Read all bytes until EOF in this source, placing them into `buf`. +@@ -515,7 +505,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_end(&mut self, buf: &mut Vec) -> Result { + read_to_end(self, buf) + } +@@ -553,7 +543,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_string(&mut self, buf: &mut String) -> Result { + // Note that we do *not* call `.read_to_end()` here. We are passing + // `&mut Vec` (the raw contents of `buf`) into the `read_to_end` +@@ -614,7 +604,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "read_exact", since = "1.6.0")] + fn read_exact(&mut self, mut buf: &mut [u8]) -> Result<()> { + while !buf.is_empty() { + match self.read(buf) { +@@ -666,7 +655,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + + /// Transforms this `Read` instance to an `Iterator` over its bytes. +@@ -696,7 +684,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn bytes(self) -> Bytes where Self: Sized { + Bytes { inner: self } + } +@@ -733,10 +720,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[unstable(feature = "io", reason = "the semantics of a partial read/write \ +- of where errors happen is currently \ +- unclear and may change", +- issue = "27802")] + fn chars(self) -> Chars where Self: Sized { + Chars { inner: self } + } +@@ -771,7 +754,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn chain(self, next: R) -> Chain where Self: Sized { + Chain { first: self, second: next, done_first: false } + } +@@ -805,7 +787,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn take(self, limit: u64) -> Take where Self: Sized { + Take { inner: self, limit: limit } + } +@@ -845,7 +826,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Write { + /// Write a buffer into this object, returning how many bytes were written. + /// +@@ -885,7 +865,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write(&mut self, buf: &[u8]) -> Result; + + /// Flush this output stream, ensuring that all intermediately buffered +@@ -911,7 +890,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn flush(&mut self) -> Result<()>; + + /// Attempts to write an entire buffer into this write. +@@ -938,7 +916,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_all(&mut self, mut buf: &[u8]) -> Result<()> { + while !buf.is_empty() { + match self.write(buf) { +@@ -990,7 +967,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_fmt(&mut self, fmt: fmt::Arguments) -> Result<()> { + // Create a shim which translates a Write to a fmt::Write and saves + // off I/O errors. instead of discarding them +@@ -1046,7 +1022,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + } + +@@ -1076,7 +1051,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Seek { + /// Seek to an offset, in bytes, in a stream. + /// +@@ -1092,7 +1066,6 @@ pub trait Seek { + /// Seeking to a negative offset is considered an error. + /// + /// [`SeekFrom::Start`]: enum.SeekFrom.html#variant.Start +- #[stable(feature = "rust1", since = "1.0.0")] + fn seek(&mut self, pos: SeekFrom) -> Result; + } + +@@ -1102,29 +1075,26 @@ pub trait Seek { + /// + /// [`Seek`]: trait.Seek.html + #[derive(Copy, PartialEq, Eq, Clone, Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub enum SeekFrom { + /// Set the offset to the provided number of bytes. +- #[stable(feature = "rust1", since = "1.0.0")] +- Start(#[stable(feature = "rust1", since = "1.0.0")] u64), ++ Start(u64), + + /// Set the offset to the size of this object plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- End(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ End(i64), + + /// Set the offset to the current position plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- Current(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ Current(i64), + } + ++#[cfg(feature="collections")] + fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + -> Result { + let mut read = 0; +@@ -1204,7 +1174,7 @@ fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + /// # } + /// ``` + /// +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub trait BufRead: Read { + /// Fills the internal buffer of this object, returning the buffer contents. + /// +@@ -1249,7 +1219,6 @@ pub trait BufRead: Read { + /// // ensure the bytes we worked with aren't returned again later + /// stdin.consume(length); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn fill_buf(&mut self) -> Result<&[u8]>; + + /// Tells this buffer that `amt` bytes have been consumed from the buffer, +@@ -1271,7 +1240,6 @@ pub trait BufRead: Read { + /// that method's example includes an example of `consume()`. + /// + /// [`fill_buf`]: #tymethod.fill_buf +- #[stable(feature = "rust1", since = "1.0.0")] + fn consume(&mut self, amt: usize); + + /// Read all bytes into `buf` until the delimiter `byte` or EOF is reached. +@@ -1327,7 +1295,6 @@ pub trait BufRead: Read { + /// assert_eq!(num_bytes, 0); + /// assert_eq!(buf, b""); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_until(&mut self, byte: u8, buf: &mut Vec) -> Result { + read_until(self, byte, buf) + } +@@ -1382,7 +1349,6 @@ pub trait BufRead: Read { + /// assert_eq!(num_bytes, 0); + /// assert_eq!(buf, ""); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_line(&mut self, buf: &mut String) -> Result { + // Note that we are not calling the `.read_until` method here, but + // rather our hardcoded implementation. For more details as to why, see +@@ -1423,7 +1389,6 @@ pub trait BufRead: Read { + /// assert_eq!(split_iter.next(), Some(b"dolor".to_vec())); + /// assert_eq!(split_iter.next(), None); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn split(self, byte: u8) -> Split where Self: Sized { + Split { buf: self, delim: byte } + } +@@ -1462,7 +1427,6 @@ pub trait BufRead: Read { + /// Each line of the iterator has the same error semantics as [`BufRead::read_line`]. + /// + /// [`BufRead::read_line`]: trait.BufRead.html#method.read_line +- #[stable(feature = "rust1", since = "1.0.0")] + fn lines(self) -> Lines where Self: Sized { + Lines { buf: self } + } +@@ -1474,14 +1438,12 @@ pub trait BufRead: Read { + /// Please see the documentation of [`chain`] for more details. + /// + /// [`chain`]: trait.Read.html#method.chain +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Chain { + first: T, + second: U, + done_first: bool, + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Chain { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.debug_struct("Chain") +@@ -1491,7 +1453,6 @@ impl fmt::Debug for Chain { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Chain { + fn read(&mut self, buf: &mut [u8]) -> Result { + if !self.done_first { +@@ -1504,7 +1465,7 @@ impl Read for Chain { + } + } + +-#[stable(feature = "chain_bufread", since = "1.9.0")] ++#[cfg(feature="collections")] + impl BufRead for Chain { + fn fill_buf(&mut self) -> Result<&[u8]> { + if !self.done_first { +@@ -1531,7 +1492,6 @@ impl BufRead for Chain { + /// Please see the documentation of [`take`] for more details. + /// + /// [`take`]: trait.Read.html#method.take +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Debug)] + pub struct Take { + inner: T, +@@ -1566,7 +1526,6 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn limit(&self) -> u64 { self.limit } + + /// Consumes the `Take`, returning the wrapped reader. +@@ -1589,13 +1548,11 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "io_take_into_inner", since = "1.15.0")] + pub fn into_inner(self) -> T { + self.inner + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Take { + fn read(&mut self, buf: &mut [u8]) -> Result { + // Don't call into inner reader at all at EOF because it may still block +@@ -1610,7 +1567,7 @@ impl Read for Take { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Take { + fn fill_buf(&mut self) -> Result<&[u8]> { + // Don't call into inner reader at all at EOF because it may still block +@@ -1649,13 +1606,11 @@ fn read_one_byte(reader: &mut Read) -> Option> { + /// Please see the documentation of [`bytes`] for more details. + /// + /// [`bytes`]: trait.Read.html#method.bytes +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Debug)] + pub struct Bytes { + inner: R, + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Iterator for Bytes { + type Item = Result; + +@@ -1670,8 +1625,6 @@ impl Iterator for Bytes { + /// Please see the documentation of `chars()` for more details. + /// + /// [chars]: trait.Read.html#method.chars +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + #[derive(Debug)] + pub struct Chars { + inner: R, +@@ -1680,8 +1633,6 @@ pub struct Chars { + /// An enumeration of possible errors that can be generated from the `Chars` + /// adapter. + #[derive(Debug)] +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + pub enum CharsError { + /// Variant representing that the underlying stream was read successfully + /// but it did not contain valid utf8 data. +@@ -1691,8 +1642,6 @@ pub enum CharsError { + Other(Error), + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl Iterator for Chars { + type Item = result::Result; + +@@ -1724,25 +1673,6 @@ impl Iterator for Chars { + } + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] +-impl std_error::Error for CharsError { +- fn description(&self) -> &str { +- match *self { +- CharsError::NotUtf8 => "invalid utf8 encoding", +- CharsError::Other(ref e) => std_error::Error::description(e), +- } +- } +- fn cause(&self) -> Option<&std_error::Error> { +- match *self { +- CharsError::NotUtf8 => None, +- CharsError::Other(ref e) => e.cause(), +- } +- } +-} +- +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl fmt::Display for CharsError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + match *self { +@@ -1761,14 +1691,14 @@ impl fmt::Display for CharsError { + /// `BufRead`. Please see the documentation of `split()` for more details. + /// + /// [split]: trait.BufRead.html#method.split +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + #[derive(Debug)] + pub struct Split { + buf: B, + delim: u8, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Split { + type Item = Result>; + +@@ -1793,13 +1723,13 @@ impl Iterator for Split { + /// `BufRead`. Please see the documentation of `lines()` for more details. + /// + /// [lines]: trait.BufRead.html#method.lines +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + #[derive(Debug)] + pub struct Lines { + buf: B, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Lines { + type Item = Result; + +diff --git a/prelude.rs b/prelude.rs +index 8772d0f..49d66c9 100644 +--- a/prelude.rs ++++ b/prelude.rs +@@ -18,7 +18,8 @@ + //! use std::io::prelude::*; + //! ``` + +-#![stable(feature = "rust1", since = "1.0.0")] ++pub use super::{Read, Write, Seek}; ++#[cfg(feature="collections")] pub use super::BufRead; + +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use super::{Read, Write, BufRead, Seek}; ++#[cfg(feature="collections")] pub use alloc::boxed::Box; ++#[cfg(feature="collections")] pub use collections::vec::Vec; +diff --git a/util.rs b/util.rs +index 078f1ad..fd13c98 100644 +--- a/util.rs ++++ b/util.rs +@@ -10,8 +10,9 @@ + + #![allow(missing_copy_implementations)] + +-use fmt; +-use io::{self, Read, Write, ErrorKind, BufRead}; ++use core::fmt; ++use io::{self, Read, Write, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; + + /// Copies the entire contents of a reader into a writer. + /// +@@ -43,7 +44,6 @@ use io::{self, Read, Write, ErrorKind, BufRead}; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn copy(reader: &mut R, writer: &mut W) -> io::Result + where R: Read, W: Write + { +@@ -67,7 +67,6 @@ pub fn copy(reader: &mut R, writer: &mut W) -> io::Result< + /// the documentation of `empty()` for more details. + /// + /// [empty]: fn.empty.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Empty { _priv: () } + + /// Constructs a new handle to an empty reader. +@@ -85,20 +84,18 @@ pub struct Empty { _priv: () } + /// io::empty().read_to_string(&mut buffer).unwrap(); + /// assert!(buffer.is_empty()); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn empty() -> Empty { Empty { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Empty { + fn read(&mut self, _buf: &mut [u8]) -> io::Result { Ok(0) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++ ++#[cfg(feature="collections")] + impl BufRead for Empty { + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(&[]) } + fn consume(&mut self, _n: usize) {} + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Empty { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Empty { .. }") +@@ -111,7 +108,6 @@ impl fmt::Debug for Empty { + /// see the documentation of `repeat()` for more details. + /// + /// [repeat]: fn.repeat.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Repeat { byte: u8 } + + /// Creates an instance of a reader that infinitely repeats one byte. +@@ -128,10 +124,8 @@ pub struct Repeat { byte: u8 } + /// io::repeat(0b101).read_exact(&mut buffer).unwrap(); + /// assert_eq!(buffer, [0b101, 0b101, 0b101]); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn repeat(byte: u8) -> Repeat { Repeat { byte: byte } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Repeat { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + for slot in &mut *buf { +@@ -141,7 +135,6 @@ impl Read for Repeat { + } + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Repeat { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Repeat { .. }") +@@ -154,7 +147,6 @@ impl fmt::Debug for Repeat { + /// see the documentation of `sink()` for more details. + /// + /// [sink]: fn.sink.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Sink { _priv: () } + + /// Creates an instance of a writer which will successfully consume all data. +@@ -171,16 +163,13 @@ pub struct Sink { _priv: () } + /// let num_bytes = io::sink().write(&buffer).unwrap(); + /// assert_eq!(num_bytes, 5); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn sink() -> Sink { Sink { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for Sink { + fn write(&mut self, buf: &[u8]) -> io::Result { Ok(buf.len()) } + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Sink { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Sink { .. }") diff --git a/patches/9128f6100c9bfe2c2c22d85ccec92f01166f5d25.patch b/patches/9128f6100c9bfe2c2c22d85ccec92f01166f5d25.patch new file mode 100644 index 0000000..71512d4 --- /dev/null +++ b/patches/9128f6100c9bfe2c2c22d85ccec92f01166f5d25.patch @@ -0,0 +1,1510 @@ +diff --git a/buffered.rs b/buffered.rs +index f98a3a8..1601229 100644 +--- a/buffered.rs ++++ b/buffered.rs +@@ -10,13 +10,13 @@ + + //! Buffering wrappers for I/O traits + ++use core::prelude::v1::*; + use io::prelude::*; + +-use cmp; +-use error; +-use fmt; ++use core::cmp; ++use core::fmt; + use io::{self, DEFAULT_BUF_SIZE, Error, ErrorKind, SeekFrom}; +-use memchr; ++use io::memchr; + + /// The `BufReader` struct adds buffering to any reader. + /// +@@ -46,7 +46,6 @@ use memchr; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufReader { + inner: R, + buf: Box<[u8]>, +@@ -69,7 +68,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: R) -> BufReader { + BufReader::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -90,7 +88,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: R) -> BufReader { + BufReader { + inner: inner, +@@ -118,7 +115,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &R { &self.inner } + + /// Gets a mutable reference to the underlying reader. +@@ -139,7 +135,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut R { &mut self.inner } + + /// Unwraps this `BufReader`, returning the underlying reader. +@@ -160,11 +155,9 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> R { self.inner } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for BufReader { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + // If we don't have any buffered data and we're doing a massive read +@@ -182,7 +175,6 @@ impl Read for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl BufRead for BufReader { + fn fill_buf(&mut self) -> io::Result<&[u8]> { + // If we've reached the end of our internal buffer then we need to fetch +@@ -202,7 +194,6 @@ impl BufRead for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufReader where R: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufReader") +@@ -212,7 +203,6 @@ impl fmt::Debug for BufReader where R: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufReader { + /// Seek to an offset, in bytes, in the underlying reader. + /// +@@ -305,7 +295,6 @@ impl Seek for BufReader { + /// [`Write`]: ../../std/io/trait.Write.html + /// [`write`]: ../../std/net/struct.TcpStream.html#method.write + /// [`TcpStream`]: ../../std/net/struct.TcpStream.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufWriter { + inner: Option, + buf: Vec, +@@ -340,7 +329,6 @@ pub struct BufWriter { + /// }; + /// ``` + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct IntoInnerError(W, Error); + + impl BufWriter { +@@ -354,7 +342,6 @@ impl BufWriter { + /// + /// let mut buffer = BufWriter::new(TcpStream::connect("127.0.0.1:34254").unwrap()); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> BufWriter { + BufWriter::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -372,7 +359,6 @@ impl BufWriter { + /// let stream = TcpStream::connect("127.0.0.1:34254").unwrap(); + /// let mut buffer = BufWriter::with_capacity(100, stream); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> BufWriter { + BufWriter { + inner: Some(inner), +@@ -421,7 +407,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.as_ref().unwrap() } + + /// Gets a mutable reference to the underlying writer. +@@ -439,7 +424,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.as_mut().unwrap() } + + /// Unwraps this `BufWriter`, returning the underlying writer. +@@ -457,7 +441,6 @@ impl BufWriter { + /// // unwrap the TcpStream and flush the buffer + /// let stream = buffer.into_inner().unwrap(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(mut self) -> Result>> { + match self.flush_buf() { + Err(e) => Err(IntoInnerError(self, e)), +@@ -466,7 +449,6 @@ impl BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for BufWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.buf.len() + buf.len() > self.buf.capacity() { +@@ -486,7 +468,6 @@ impl Write for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufWriter") +@@ -496,7 +477,6 @@ impl fmt::Debug for BufWriter where W: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufWriter { + /// Seek to the offset, in bytes, in the underlying writer. + /// +@@ -506,7 +486,6 @@ impl Seek for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Drop for BufWriter { + fn drop(&mut self) { + if self.inner.is_some() && !self.panicked { +@@ -545,7 +524,6 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn error(&self) -> &Error { &self.1 } + + /// Returns the buffered writer instance which generated the error. +@@ -578,23 +556,13 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> W { self.0 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl From> for Error { + fn from(iie: IntoInnerError) -> Error { iie.1 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for IntoInnerError { +- fn description(&self) -> &str { +- error::Error::description(self.error()) +- } +-} +- +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for IntoInnerError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.error().fmt(f) +@@ -649,7 +617,6 @@ impl fmt::Display for IntoInnerError { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct LineWriter { + inner: BufWriter, + need_flush: bool, +@@ -670,7 +637,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> LineWriter { + // Lines typically aren't that long, don't use a giant buffer + LineWriter::with_capacity(1024, inner) +@@ -691,7 +657,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> LineWriter { + LineWriter { + inner: BufWriter::with_capacity(cap, inner), +@@ -715,7 +680,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.get_ref() } + + /// Gets a mutable reference to the underlying writer. +@@ -738,7 +702,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.get_mut() } + + /// Unwraps this `LineWriter`, returning the underlying writer. +@@ -760,7 +723,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> Result>> { + self.inner.into_inner().map_err(|IntoInnerError(buf, e)| { + IntoInnerError(LineWriter { +@@ -771,7 +733,6 @@ impl LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for LineWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.need_flush { +@@ -816,7 +777,6 @@ impl Write for LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for LineWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("LineWriter") +diff --git a/cursor.rs b/cursor.rs +index 0cff866..a674899 100644 +--- a/cursor.rs ++++ b/cursor.rs +@@ -8,10 +8,11 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + ++use core::prelude::v1::*; + use io::prelude::*; + +-use core::convert::TryInto; +-use cmp; ++#[cfg(feature = "collections")] use core::convert::TryInto; ++use core::cmp; + use io::{self, SeekFrom, Error, ErrorKind}; + + /// A `Cursor` wraps another type and provides it with a +@@ -79,7 +80,6 @@ use io::{self, SeekFrom, Error, ErrorKind}; + /// assert_eq!(&buff.get_ref()[5..15], &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]); + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Clone, Debug)] + pub struct Cursor { + inner: T, +@@ -98,7 +98,6 @@ impl Cursor { + /// # fn force_inference(_: &Cursor>) {} + /// # force_inference(&buff); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: T) -> Cursor { + Cursor { pos: 0, inner: inner } + } +@@ -116,7 +115,6 @@ impl Cursor { + /// + /// let vec = buff.into_inner(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> T { self.inner } + + /// Gets a reference to the underlying value in this cursor. +@@ -132,7 +130,6 @@ impl Cursor { + /// + /// let reference = buff.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &T { &self.inner } + + /// Gets a mutable reference to the underlying value in this cursor. +@@ -151,7 +148,6 @@ impl Cursor { + /// + /// let reference = buff.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut T { &mut self.inner } + + /// Returns the current position of this cursor. +@@ -173,7 +169,6 @@ impl Cursor { + /// buff.seek(SeekFrom::Current(-1)).unwrap(); + /// assert_eq!(buff.position(), 1); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn position(&self) -> u64 { self.pos } + + /// Sets the position of this cursor. +@@ -193,11 +188,9 @@ impl Cursor { + /// buff.set_position(4); + /// assert_eq!(buff.position(), 4); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn set_position(&mut self, pos: u64) { self.pos = pos; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl io::Seek for Cursor where T: AsRef<[u8]> { + fn seek(&mut self, style: SeekFrom) -> io::Result { + let pos = match style { +@@ -216,25 +209,27 @@ impl io::Seek for Cursor where T: AsRef<[u8]> { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Cursor where T: AsRef<[u8]> { + fn read(&mut self, buf: &mut [u8]) -> io::Result { +- let n = Read::read(&mut self.fill_buf()?, buf)?; ++ let n = Read::read(&mut self.get_buf()?, buf)?; + self.pos += n as u64; + Ok(n) + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl BufRead for Cursor where T: AsRef<[u8]> { +- fn fill_buf(&mut self) -> io::Result<&[u8]> { ++impl Cursor where T: AsRef<[u8]> { ++ fn get_buf(&mut self) -> io::Result<&[u8]> { + let amt = cmp::min(self.pos, self.inner.as_ref().len() as u64); + Ok(&self.inner.as_ref()[(amt as usize)..]) + } ++} ++ ++#[cfg(feature = "collections")] ++impl BufRead for Cursor where T: AsRef<[u8]> { ++ fn fill_buf(&mut self) -> io::Result<&[u8]> { self.get_buf() } + fn consume(&mut self, amt: usize) { self.pos += amt as u64; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for Cursor<&'a mut [u8]> { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -246,7 +241,7 @@ impl<'a> Write for Cursor<&'a mut [u8]> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature = "collections")] + impl Write for Cursor> { + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos: usize = self.position().try_into().map_err(|_| { +@@ -276,8 +271,8 @@ impl Write for Cursor> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "cursor_box_slice", since = "1.5.0")] +-impl Write for Cursor> { ++#[cfg(feature = "alloc")] ++impl Write for Cursor<::alloc::boxed::Box<[u8]>> { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos = cmp::min(self.pos, self.inner.len() as u64); +diff --git a/error.rs b/error.rs +index 6d4da2e..14cfe1a 100644 +--- a/error.rs ++++ b/error.rs +@@ -8,11 +8,16 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use error; +-use fmt; +-use result; +-use sys; +-use convert::From; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++#[cfg(not(feature="alloc"))] use ::FakeBox as Box; ++use core::convert::Into; ++use core::fmt; ++use core::marker::{Send, Sync}; ++use core::option::Option::{self, Some, None}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(not(feature="collections"))] use ::ErrorString as String; ++use core::convert::From; + + /// A specialized [`Result`](../result/enum.Result.html) type for I/O + /// operations. +@@ -44,7 +49,6 @@ use convert::From; + /// Ok(buffer) + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub type Result = result::Result; + + /// The error type for I/O operations of the `Read`, `Write`, `Seek`, and +@@ -56,7 +60,6 @@ pub type Result = result::Result; + /// + /// [`ErrorKind`]: enum.ErrorKind.html + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Error { + repr: Repr, + } +@@ -64,13 +67,16 @@ pub struct Error { + enum Repr { + Os(i32), + Simple(ErrorKind), ++ #[cfg(feature="alloc")] + Custom(Box), ++ #[cfg(not(feature="alloc"))] ++ Custom(Custom), + } + + #[derive(Debug)] + struct Custom { + kind: ErrorKind, +- error: Box, ++ error: String, + } + + /// A list specifying general categories of I/O error. +@@ -82,47 +88,34 @@ struct Custom { + /// + /// [`io::Error`]: struct.Error.html + #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)] +-#[stable(feature = "rust1", since = "1.0.0")] + #[allow(deprecated)] + pub enum ErrorKind { + /// An entity was not found, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + NotFound, + /// The operation lacked the necessary privileges to complete. +- #[stable(feature = "rust1", since = "1.0.0")] + PermissionDenied, + /// The connection was refused by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionRefused, + /// The connection was reset by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionReset, + /// The connection was aborted (terminated) by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionAborted, + /// The network operation failed because it was not connected yet. +- #[stable(feature = "rust1", since = "1.0.0")] + NotConnected, + /// A socket address could not be bound because the address is already in + /// use elsewhere. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrInUse, + /// A nonexistent interface was requested or the requested address was not + /// local. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrNotAvailable, + /// The operation failed because a pipe was closed. +- #[stable(feature = "rust1", since = "1.0.0")] + BrokenPipe, + /// An entity already exists, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + AlreadyExists, + /// The operation needs to block to complete, but the blocking operation was + /// requested to not occur. +- #[stable(feature = "rust1", since = "1.0.0")] + WouldBlock, + /// A parameter was incorrect. +- #[stable(feature = "rust1", since = "1.0.0")] + InvalidInput, + /// Data not valid for the operation were encountered. + /// +@@ -134,10 +127,8 @@ pub enum ErrorKind { + /// `InvalidData` if the file's contents are not valid UTF-8. + /// + /// [`InvalidInput`]: #variant.InvalidInput +- #[stable(feature = "io_invalid_data", since = "1.2.0")] + InvalidData, + /// The I/O operation's timeout expired, causing it to be canceled. +- #[stable(feature = "rust1", since = "1.0.0")] + TimedOut, + /// An error returned when an operation could not be completed because a + /// call to [`write()`] returned [`Ok(0)`]. +@@ -148,15 +139,12 @@ pub enum ErrorKind { + /// + /// [`write()`]: ../../std/io/trait.Write.html#tymethod.write + /// [`Ok(0)`]: ../../std/io/type.Result.html +- #[stable(feature = "rust1", since = "1.0.0")] + WriteZero, + /// This operation was interrupted. + /// + /// Interrupted operations can typically be retried. +- #[stable(feature = "rust1", since = "1.0.0")] + Interrupted, + /// Any I/O error not part of this list. +- #[stable(feature = "rust1", since = "1.0.0")] + Other, + + /// An error returned when an operation could not be completed because an +@@ -165,15 +153,10 @@ pub enum ErrorKind { + /// This typically means that an operation could only succeed if it read a + /// particular number of bytes but only a smaller number of bytes could be + /// read. +- #[stable(feature = "read_exact", since = "1.6.0")] + UnexpectedEof, + + /// A marker variant that tells the compiler that users of this enum cannot + /// match it exhaustively. +- #[unstable(feature = "io_error_internals", +- reason = "better expressed through extensible enums that this \ +- enum cannot be exhaustively matched against", +- issue = "0")] + #[doc(hidden)] + __Nonexhaustive, + } +@@ -206,7 +189,6 @@ impl ErrorKind { + + /// Intended for use for errors not exposed to the user, where allocating onto + /// the heap (for normal construction via Error::new) is too costly. +-#[stable(feature = "io_error_from_errorkind", since = "1.14.0")] + impl From for Error { + fn from(kind: ErrorKind) -> Error { + Error { +@@ -234,14 +216,13 @@ impl Error { + /// // errors can also be created from other errors + /// let custom_error2 = Error::new(ErrorKind::Interrupted, custom_error); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(kind: ErrorKind, error: E) -> Error +- where E: Into> ++ where E: Into + { + Self::_new(kind, error.into()) + } + +- fn _new(kind: ErrorKind, error: Box) -> Error { ++ fn _new(kind: ErrorKind, error: String) -> Error { + Error { + repr: Repr::Custom(Box::new(Custom { + kind: kind, +@@ -250,24 +231,6 @@ impl Error { + } + } + +- /// Returns an error representing the last OS error which occurred. +- /// +- /// This function reads the value of `errno` for the target platform (e.g. +- /// `GetLastError` on Windows) and will return a corresponding instance of +- /// `Error` for the error code. +- /// +- /// # Examples +- /// +- /// ``` +- /// use std::io::Error; +- /// +- /// println!("last OS error: {:?}", Error::last_os_error()); +- /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] +- pub fn last_os_error() -> Error { +- Error::from_raw_os_error(sys::os::errno() as i32) +- } +- + /// Creates a new instance of an `Error` from a particular OS error code. + /// + /// # Examples +@@ -293,7 +256,6 @@ impl Error { + /// assert_eq!(error.kind(), io::ErrorKind::AddrInUse); + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn from_raw_os_error(code: i32) -> Error { + Error { repr: Repr::Os(code) } + } +@@ -324,7 +286,6 @@ impl Error { + /// print_os_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn raw_os_error(&self) -> Option { + match self.repr { + Repr::Os(i) => Some(i), +@@ -358,12 +319,11 @@ impl Error { + /// print_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_ref(&self) -> Option<&(error::Error+Send+Sync+'static)> { ++ pub fn get_ref(&self) -> Option<&String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref c) => Some(&*c.error), ++ Repr::Custom(ref c) => Some(&c.error), + } + } + +@@ -429,12 +389,11 @@ impl Error { + /// print_error(&change_error(Error::new(ErrorKind::Other, MyError::new()))); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_mut(&mut self) -> Option<&mut (error::Error+Send+Sync+'static)> { ++ pub fn get_mut(&mut self) -> Option<&mut String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref mut c) => Some(&mut *c.error), ++ Repr::Custom(ref mut c) => Some(&mut c.error), + } + } + +@@ -463,8 +422,7 @@ impl Error { + /// print_error(Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn into_inner(self) -> Option> { ++ pub fn into_inner(self) -> Option { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +@@ -490,10 +448,9 @@ impl Error { + /// print_error(Error::new(ErrorKind::AddrInUse, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn kind(&self) -> ErrorKind { + match self.repr { +- Repr::Os(code) => sys::decode_error_kind(code), ++ Repr::Os(_code) => ErrorKind::Other, + Repr::Custom(ref c) => c.kind, + Repr::Simple(kind) => kind, + } +@@ -504,21 +461,18 @@ impl fmt::Debug for Repr { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match *self { + Repr::Os(ref code) => +- fmt.debug_struct("Os").field("code", code) +- .field("message", &sys::os::error_string(*code)).finish(), ++ fmt.debug_struct("Os").field("code", code).finish(), + Repr::Custom(ref c) => fmt.debug_tuple("Custom").field(c).finish(), + Repr::Simple(kind) => fmt.debug_tuple("Kind").field(&kind).finish(), + } + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for Error { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match self.repr { + Repr::Os(code) => { +- let detail = sys::os::error_string(code); +- write!(fmt, "{} (os error {})", detail, code) ++ write!(fmt, "os error {}", code) + } + Repr::Custom(ref c) => c.error.fmt(fmt), + Repr::Simple(kind) => write!(fmt, "{}", kind.as_str()), +@@ -526,24 +480,6 @@ impl fmt::Display for Error { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for Error { +- fn description(&self) -> &str { +- match self.repr { +- Repr::Os(..) | Repr::Simple(..) => self.kind().as_str(), +- Repr::Custom(ref c) => c.error.description(), +- } +- } +- +- fn cause(&self) -> Option<&error::Error> { +- match self.repr { +- Repr::Os(..) => None, +- Repr::Simple(..) => None, +- Repr::Custom(ref c) => c.error.cause(), +- } +- } +-} +- + fn _assert_error_is_sync_send() { + fn _is_sync_send() {} + _is_sync_send::(); +diff --git a/impls.rs b/impls.rs +index f691289..c4374d3 100644 +--- a/impls.rs ++++ b/impls.rs +@@ -8,26 +8,31 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use cmp; +-use io::{self, SeekFrom, Read, Write, Seek, BufRead, Error, ErrorKind}; +-use fmt; +-use mem; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++use core::cmp; ++use io::{self, SeekFrom, Read, Write, Seek, Error, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; ++use core::fmt; ++use core::mem; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(feature="collections")] use collections::vec::Vec; + + // ============================================================================= + // Forwarding implementations + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, R: Read + ?Sized> Read for &'a mut R { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -38,7 +43,6 @@ impl<'a, R: Read + ?Sized> Read for &'a mut R { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, W: Write + ?Sized> Write for &'a mut W { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -56,12 +60,11 @@ impl<'a, W: Write + ?Sized> Write for &'a mut W { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, S: Seek + ?Sized> Seek for &'a mut S { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -80,18 +83,20 @@ impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Read for Box { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -102,7 +107,7 @@ impl Read for Box { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Write for Box { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -120,12 +125,12 @@ impl Write for Box { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Seek for Box { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Box { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -151,7 +156,6 @@ impl BufRead for Box { + /// + /// Note that reading updates the slice to point to the yet unread part. + /// The slice will be empty when EOF is reached. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Read for &'a [u8] { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { +@@ -193,7 +197,7 @@ impl<'a> Read for &'a [u8] { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a> BufRead for &'a [u8] { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(*self) } +@@ -207,7 +211,6 @@ impl<'a> BufRead for &'a [u8] { + /// + /// Note that writing updates the slice to point to the yet unwritten part. + /// The slice will be empty when it has been completely overwritten. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for &'a mut [u8] { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -233,7 +236,7 @@ impl<'a> Write for &'a mut [u8] { + + /// Write is implemented for `Vec` by appending to the vector. + /// The vector will grow as needed. +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Write for Vec { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { +diff --git a/memchr.rs b/memchr.rs +index 3824a5f..312cf47 100644 +--- a/memchr.rs ++++ b/memchr.rs +@@ -11,10 +11,12 @@ + // Original implementation taken from rust-memchr + // Copyright 2015 Andrew Gallant, bluss and Nicolas Koch + ++pub use self::fallback::{memchr,memrchr}; ++ + #[allow(dead_code)] + pub mod fallback { +- use cmp; +- use mem; ++ use core::cmp; ++ use core::mem; + + const LO_U64: u64 = 0x0101010101010101; + const HI_U64: u64 = 0x8080808080808080; +diff --git a/mod.rs b/mod.rs +index 8cb7b2b..1879347 100644 +--- a/mod.rs ++++ b/mod.rs +@@ -253,44 +253,34 @@ + //! [`?` operator]: ../../book/syntax-index.html + //! [`read()`]: trait.Read.html#tymethod.read + +-#![stable(feature = "rust1", since = "1.0.0")] +- +-use cmp; ++use core::cmp; + use std_unicode::str as core_str; +-use error as std_error; +-use fmt; +-use result; +-use str; +-use memchr; +- +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::{BufReader, BufWriter, LineWriter}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::IntoInnerError; +-#[stable(feature = "rust1", since = "1.0.0")] ++use core::fmt; ++use core::iter::{Iterator}; ++use core::marker::Sized; ++#[cfg(feature="collections")] use core::ops::{Drop, FnOnce}; ++use core::option::Option::{self, Some, None}; ++use core::result::Result::{Ok, Err}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++use core::str; ++#[cfg(feature="collections")] use collections::vec::Vec; ++mod memchr; ++ ++#[cfg(feature="collections")] pub use self::buffered::{BufReader, BufWriter, LineWriter}; ++#[cfg(feature="collections")] pub use self::buffered::IntoInnerError; + pub use self::cursor::Cursor; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::error::{Result, Error, ErrorKind}; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::util::{copy, sink, Sink, empty, Empty, repeat, Repeat}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{stdin, stdout, stderr, _print, Stdin, Stdout, Stderr}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{StdoutLock, StderrLock, StdinLock}; +-#[unstable(feature = "libstd_io_internals", issue = "0")] +-#[doc(no_inline, hidden)] +-pub use self::stdio::{set_panic, set_print}; + + pub mod prelude; +-mod buffered; ++#[cfg(feature="collections")] mod buffered; + mod cursor; + mod error; + mod impls; +-mod lazy; + mod util; +-mod stdio; + +-const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; ++const DEFAULT_BUF_SIZE: usize = 8 * 1024; + + // A few methods below (read_to_string, read_line) will append data into a + // `String` buffer, but we need to be pretty careful when doing this. The +@@ -310,6 +300,7 @@ const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; + // 2. We're passing a raw buffer to the function `f`, and it is expected that + // the function only *appends* bytes to the buffer. We'll get undefined + // behavior if existing bytes are overwritten to have non-UTF-8 data. ++#[cfg(feature="collections")] + fn append_to_string(buf: &mut String, f: F) -> Result + where F: FnOnce(&mut Vec) -> Result + { +@@ -341,6 +332,7 @@ fn append_to_string(buf: &mut String, f: F) -> Result + // of data to return. Simply tacking on an extra DEFAULT_BUF_SIZE space every + // time is 4,500 times (!) slower than this if the reader has a very small + // amount of data to return. ++#[cfg(feature="collections")] + fn read_to_end(r: &mut R, buf: &mut Vec) -> Result { + let start_len = buf.len(); + let mut len = start_len; +@@ -423,7 +415,6 @@ fn read_to_end(r: &mut R, buf: &mut Vec) -> Result + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Read { + /// Pull some bytes from this source into the specified buffer, returning + /// how many bytes were read. +@@ -473,7 +464,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read(&mut self, buf: &mut [u8]) -> Result; + + /// Read all bytes until EOF in this source, placing them into `buf`. +@@ -515,7 +505,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_end(&mut self, buf: &mut Vec) -> Result { + read_to_end(self, buf) + } +@@ -553,7 +543,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_string(&mut self, buf: &mut String) -> Result { + // Note that we do *not* call `.read_to_end()` here. We are passing + // `&mut Vec` (the raw contents of `buf`) into the `read_to_end` +@@ -614,7 +604,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "read_exact", since = "1.6.0")] + fn read_exact(&mut self, mut buf: &mut [u8]) -> Result<()> { + while !buf.is_empty() { + match self.read(buf) { +@@ -666,7 +655,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + + /// Transforms this `Read` instance to an `Iterator` over its bytes. +@@ -696,7 +684,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn bytes(self) -> Bytes where Self: Sized { + Bytes { inner: self } + } +@@ -733,10 +720,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[unstable(feature = "io", reason = "the semantics of a partial read/write \ +- of where errors happen is currently \ +- unclear and may change", +- issue = "27802")] + fn chars(self) -> Chars where Self: Sized { + Chars { inner: self } + } +@@ -771,7 +754,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn chain(self, next: R) -> Chain where Self: Sized { + Chain { first: self, second: next, done_first: false } + } +@@ -805,7 +787,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn take(self, limit: u64) -> Take where Self: Sized { + Take { inner: self, limit: limit } + } +@@ -845,7 +826,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Write { + /// Write a buffer into this object, returning how many bytes were written. + /// +@@ -885,7 +865,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write(&mut self, buf: &[u8]) -> Result; + + /// Flush this output stream, ensuring that all intermediately buffered +@@ -911,7 +890,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn flush(&mut self) -> Result<()>; + + /// Attempts to write an entire buffer into this write. +@@ -938,7 +916,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_all(&mut self, mut buf: &[u8]) -> Result<()> { + while !buf.is_empty() { + match self.write(buf) { +@@ -990,7 +967,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_fmt(&mut self, fmt: fmt::Arguments) -> Result<()> { + // Create a shim which translates a Write to a fmt::Write and saves + // off I/O errors. instead of discarding them +@@ -1046,7 +1022,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + } + +@@ -1076,7 +1051,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Seek { + /// Seek to an offset, in bytes, in a stream. + /// +@@ -1092,7 +1066,6 @@ pub trait Seek { + /// Seeking to a negative offset is considered an error. + /// + /// [`SeekFrom::Start`]: enum.SeekFrom.html#variant.Start +- #[stable(feature = "rust1", since = "1.0.0")] + fn seek(&mut self, pos: SeekFrom) -> Result; + } + +@@ -1102,29 +1075,26 @@ pub trait Seek { + /// + /// [`Seek`]: trait.Seek.html + #[derive(Copy, PartialEq, Eq, Clone, Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub enum SeekFrom { + /// Set the offset to the provided number of bytes. +- #[stable(feature = "rust1", since = "1.0.0")] +- Start(#[stable(feature = "rust1", since = "1.0.0")] u64), ++ Start(u64), + + /// Set the offset to the size of this object plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- End(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ End(i64), + + /// Set the offset to the current position plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- Current(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ Current(i64), + } + ++#[cfg(feature="collections")] + fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + -> Result { + let mut read = 0; +@@ -1204,7 +1174,7 @@ fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + /// # } + /// ``` + /// +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub trait BufRead: Read { + /// Fills the internal buffer of this object, returning the buffer contents. + /// +@@ -1249,7 +1219,6 @@ pub trait BufRead: Read { + /// // ensure the bytes we worked with aren't returned again later + /// stdin.consume(length); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn fill_buf(&mut self) -> Result<&[u8]>; + + /// Tells this buffer that `amt` bytes have been consumed from the buffer, +@@ -1271,7 +1240,6 @@ pub trait BufRead: Read { + /// that method's example includes an example of `consume()`. + /// + /// [`fill_buf()`]: #tymethod.fill_buf +- #[stable(feature = "rust1", since = "1.0.0")] + fn consume(&mut self, amt: usize); + + /// Read all bytes into `buf` until the delimiter `byte` or EOF is reached. +@@ -1313,7 +1281,6 @@ pub trait BufRead: Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_until(&mut self, byte: u8, buf: &mut Vec) -> Result { + read_until(self, byte, buf) + } +@@ -1360,7 +1327,6 @@ pub trait BufRead: Read { + /// buffer.clear(); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_line(&mut self, buf: &mut String) -> Result { + // Note that we are not calling the `.read_until` method here, but + // rather our hardcoded implementation. For more details as to why, see +@@ -1397,7 +1363,6 @@ pub trait BufRead: Read { + /// println!("{:?}", content.unwrap()); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn split(self, byte: u8) -> Split where Self: Sized { + Split { buf: self, delim: byte } + } +@@ -1431,7 +1396,6 @@ pub trait BufRead: Read { + /// Each line of the iterator has the same error semantics as [`BufRead::read_line()`]. + /// + /// [`BufRead::read_line()`]: trait.BufRead.html#method.read_line +- #[stable(feature = "rust1", since = "1.0.0")] + fn lines(self) -> Lines where Self: Sized { + Lines { buf: self } + } +@@ -1443,14 +1407,12 @@ pub trait BufRead: Read { + /// Please see the documentation of [`chain()`] for more details. + /// + /// [`chain()`]: trait.Read.html#method.chain +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Chain { + first: T, + second: U, + done_first: bool, + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Chain { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.debug_struct("Chain") +@@ -1460,7 +1422,6 @@ impl fmt::Debug for Chain { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Chain { + fn read(&mut self, buf: &mut [u8]) -> Result { + if !self.done_first { +@@ -1473,7 +1434,7 @@ impl Read for Chain { + } + } + +-#[stable(feature = "chain_bufread", since = "1.9.0")] ++#[cfg(feature="collections")] + impl BufRead for Chain { + fn fill_buf(&mut self) -> Result<&[u8]> { + if !self.done_first { +@@ -1500,7 +1461,6 @@ impl BufRead for Chain { + /// Please see the documentation of [`take()`] for more details. + /// + /// [`take()`]: trait.Read.html#method.take +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Debug)] + pub struct Take { + inner: T, +@@ -1535,7 +1495,6 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn limit(&self) -> u64 { self.limit } + + /// Consumes the `Take`, returning the wrapped reader. +@@ -1558,13 +1517,11 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "io_take_into_inner", since = "1.15.0")] + pub fn into_inner(self) -> T { + self.inner + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Take { + fn read(&mut self, buf: &mut [u8]) -> Result { + // Don't call into inner reader at all at EOF because it may still block +@@ -1579,7 +1536,7 @@ impl Read for Take { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Take { + fn fill_buf(&mut self) -> Result<&[u8]> { + // Don't call into inner reader at all at EOF because it may still block +@@ -1618,13 +1575,11 @@ fn read_one_byte(reader: &mut Read) -> Option> { + /// Please see the documentation of [`bytes()`] for more details. + /// + /// [`bytes()`]: trait.Read.html#method.bytes +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Debug)] + pub struct Bytes { + inner: R, + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Iterator for Bytes { + type Item = Result; + +@@ -1639,8 +1594,6 @@ impl Iterator for Bytes { + /// Please see the documentation of `chars()` for more details. + /// + /// [chars]: trait.Read.html#method.chars +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + #[derive(Debug)] + pub struct Chars { + inner: R, +@@ -1649,8 +1602,6 @@ pub struct Chars { + /// An enumeration of possible errors that can be generated from the `Chars` + /// adapter. + #[derive(Debug)] +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + pub enum CharsError { + /// Variant representing that the underlying stream was read successfully + /// but it did not contain valid utf8 data. +@@ -1660,8 +1611,6 @@ pub enum CharsError { + Other(Error), + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl Iterator for Chars { + type Item = result::Result; + +@@ -1693,25 +1642,6 @@ impl Iterator for Chars { + } + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] +-impl std_error::Error for CharsError { +- fn description(&self) -> &str { +- match *self { +- CharsError::NotUtf8 => "invalid utf8 encoding", +- CharsError::Other(ref e) => std_error::Error::description(e), +- } +- } +- fn cause(&self) -> Option<&std_error::Error> { +- match *self { +- CharsError::NotUtf8 => None, +- CharsError::Other(ref e) => e.cause(), +- } +- } +-} +- +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl fmt::Display for CharsError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + match *self { +@@ -1730,14 +1660,14 @@ impl fmt::Display for CharsError { + /// `BufRead`. Please see the documentation of `split()` for more details. + /// + /// [split]: trait.BufRead.html#method.split +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + #[derive(Debug)] + pub struct Split { + buf: B, + delim: u8, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Split { + type Item = Result>; + +@@ -1762,13 +1692,13 @@ impl Iterator for Split { + /// `BufRead`. Please see the documentation of `lines()` for more details. + /// + /// [lines]: trait.BufRead.html#method.lines +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + #[derive(Debug)] + pub struct Lines { + buf: B, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Lines { + type Item = Result; + +diff --git a/prelude.rs b/prelude.rs +index 8772d0f..49d66c9 100644 +--- a/prelude.rs ++++ b/prelude.rs +@@ -18,7 +18,8 @@ + //! use std::io::prelude::*; + //! ``` + +-#![stable(feature = "rust1", since = "1.0.0")] ++pub use super::{Read, Write, Seek}; ++#[cfg(feature="collections")] pub use super::BufRead; + +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use super::{Read, Write, BufRead, Seek}; ++#[cfg(feature="collections")] pub use alloc::boxed::Box; ++#[cfg(feature="collections")] pub use collections::vec::Vec; +diff --git a/util.rs b/util.rs +index 4163187..dd64d72 100644 +--- a/util.rs ++++ b/util.rs +@@ -10,8 +10,9 @@ + + #![allow(missing_copy_implementations)] + +-use fmt; +-use io::{self, Read, Write, ErrorKind, BufRead}; ++use core::fmt; ++use io::{self, Read, Write, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; + + /// Copies the entire contents of a reader into a writer. + /// +@@ -43,7 +44,6 @@ use io::{self, Read, Write, ErrorKind, BufRead}; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn copy(reader: &mut R, writer: &mut W) -> io::Result + where R: Read, W: Write + { +@@ -67,7 +67,6 @@ pub fn copy(reader: &mut R, writer: &mut W) -> io::Result< + /// the documentation of `empty()` for more details. + /// + /// [empty]: fn.empty.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Empty { _priv: () } + + /// Constructs a new handle to an empty reader. +@@ -85,20 +84,18 @@ pub struct Empty { _priv: () } + /// io::empty().read_to_string(&mut buffer).unwrap(); + /// assert!(buffer.is_empty()); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn empty() -> Empty { Empty { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Empty { + fn read(&mut self, _buf: &mut [u8]) -> io::Result { Ok(0) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++ ++#[cfg(feature="collections")] + impl BufRead for Empty { + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(&[]) } + fn consume(&mut self, _n: usize) {} + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Empty { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Empty { .. }") +@@ -111,7 +108,6 @@ impl fmt::Debug for Empty { + /// see the documentation of `repeat()` for more details. + /// + /// [repeat]: fn.repeat.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Repeat { byte: u8 } + + /// Creates an instance of a reader that infinitely repeats one byte. +@@ -128,10 +124,8 @@ pub struct Repeat { byte: u8 } + /// io::repeat(0b101).read_exact(&mut buffer).unwrap(); + /// assert_eq!(buffer, [0b101, 0b101, 0b101]); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn repeat(byte: u8) -> Repeat { Repeat { byte: byte } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Repeat { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + for slot in &mut *buf { +@@ -141,7 +135,6 @@ impl Read for Repeat { + } + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Repeat { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Repeat { .. }") +@@ -154,7 +147,6 @@ impl fmt::Debug for Repeat { + /// see the documentation of `sink()` for more details. + /// + /// [sink]: fn.sink.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Sink { _priv: () } + + /// Creates an instance of a writer which will successfully consume all data. +@@ -171,16 +163,13 @@ pub struct Sink { _priv: () } + /// let num_bytes = io::sink().write(&buffer).unwrap(); + /// assert_eq!(num_bytes, 5); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn sink() -> Sink { Sink { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for Sink { + fn write(&mut self, buf: &[u8]) -> io::Result { Ok(buf.len()) } + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Sink { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Sink { .. }") diff --git a/patches/9a5cef4de51c1c90fb2d05b0c7e6feb9cf0224d6.patch b/patches/9a5cef4de51c1c90fb2d05b0c7e6feb9cf0224d6.patch new file mode 100644 index 0000000..ae457fe --- /dev/null +++ b/patches/9a5cef4de51c1c90fb2d05b0c7e6feb9cf0224d6.patch @@ -0,0 +1,1476 @@ +diff --git a/buffered.rs b/buffered.rs +index cd7a50d..efa81b6 100644 +--- a/buffered.rs ++++ b/buffered.rs +@@ -10,13 +10,13 @@ + + //! Buffering wrappers for I/O traits + ++use core::prelude::v1::*; + use io::prelude::*; + +-use cmp; +-use error; +-use fmt; ++use core::cmp; ++use core::fmt; + use io::{self, DEFAULT_BUF_SIZE, Error, ErrorKind, SeekFrom}; +-use memchr; ++use io::memchr; + + /// The `BufReader` struct adds buffering to any reader. + /// +@@ -46,7 +46,6 @@ use memchr; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufReader { + inner: R, + buf: Box<[u8]>, +@@ -69,7 +68,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: R) -> BufReader { + BufReader::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -90,7 +88,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: R) -> BufReader { + BufReader { + inner: inner, +@@ -118,7 +115,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &R { &self.inner } + + /// Gets a mutable reference to the underlying reader. +@@ -139,7 +135,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut R { &mut self.inner } + + /// Unwraps this `BufReader`, returning the underlying reader. +@@ -160,11 +155,9 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> R { self.inner } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for BufReader { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + // If we don't have any buffered data and we're doing a massive read +@@ -182,7 +175,6 @@ impl Read for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl BufRead for BufReader { + fn fill_buf(&mut self) -> io::Result<&[u8]> { + // If we've reached the end of our internal buffer then we need to fetch +@@ -202,7 +194,6 @@ impl BufRead for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufReader where R: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufReader") +@@ -212,7 +203,6 @@ impl fmt::Debug for BufReader where R: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufReader { + /// Seek to an offset, in bytes, in the underlying reader. + /// +@@ -305,7 +295,6 @@ impl Seek for BufReader { + /// [`Write`]: ../../std/io/trait.Write.html + /// [`write`]: ../../std/net/struct.TcpStream.html#method.write + /// [`TcpStream`]: ../../std/net/struct.TcpStream.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufWriter { + inner: Option, + buf: Vec, +@@ -340,7 +329,6 @@ pub struct BufWriter { + /// }; + /// ``` + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct IntoInnerError(W, Error); + + impl BufWriter { +@@ -354,7 +342,6 @@ impl BufWriter { + /// + /// let mut buffer = BufWriter::new(TcpStream::connect("127.0.0.1:34254").unwrap()); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> BufWriter { + BufWriter::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -372,7 +359,6 @@ impl BufWriter { + /// let stream = TcpStream::connect("127.0.0.1:34254").unwrap(); + /// let mut buffer = BufWriter::with_capacity(100, stream); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> BufWriter { + BufWriter { + inner: Some(inner), +@@ -421,7 +407,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.as_ref().unwrap() } + + /// Gets a mutable reference to the underlying writer. +@@ -439,7 +424,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.as_mut().unwrap() } + + /// Unwraps this `BufWriter`, returning the underlying writer. +@@ -457,7 +441,6 @@ impl BufWriter { + /// // unwrap the TcpStream and flush the buffer + /// let stream = buffer.into_inner().unwrap(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(mut self) -> Result>> { + match self.flush_buf() { + Err(e) => Err(IntoInnerError(self, e)), +@@ -466,7 +449,6 @@ impl BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for BufWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.buf.len() + buf.len() > self.buf.capacity() { +@@ -486,7 +468,6 @@ impl Write for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufWriter") +@@ -496,7 +477,6 @@ impl fmt::Debug for BufWriter where W: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufWriter { + /// Seek to the offset, in bytes, in the underlying writer. + /// +@@ -506,7 +486,6 @@ impl Seek for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Drop for BufWriter { + fn drop(&mut self) { + if self.inner.is_some() && !self.panicked { +@@ -545,7 +524,6 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn error(&self) -> &Error { &self.1 } + + /// Returns the buffered writer instance which generated the error. +@@ -578,23 +556,13 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> W { self.0 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl From> for Error { + fn from(iie: IntoInnerError) -> Error { iie.1 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for IntoInnerError { +- fn description(&self) -> &str { +- error::Error::description(self.error()) +- } +-} +- +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for IntoInnerError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.error().fmt(f) +@@ -649,7 +617,6 @@ impl fmt::Display for IntoInnerError { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct LineWriter { + inner: BufWriter, + } +@@ -669,7 +636,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> LineWriter { + // Lines typically aren't that long, don't use a giant buffer + LineWriter::with_capacity(1024, inner) +@@ -690,7 +656,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> LineWriter { + LineWriter { inner: BufWriter::with_capacity(cap, inner) } + } +@@ -711,7 +676,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.get_ref() } + + /// Gets a mutable reference to the underlying writer. +@@ -734,7 +698,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.get_mut() } + + /// Unwraps this `LineWriter`, returning the underlying writer. +@@ -756,7 +719,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> Result>> { + self.inner.into_inner().map_err(|IntoInnerError(buf, e)| { + IntoInnerError(LineWriter { inner: buf }, e) +@@ -764,7 +726,6 @@ impl LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for LineWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + match memchr::memrchr(b'\n', buf) { +@@ -783,7 +744,6 @@ impl Write for LineWriter { + fn flush(&mut self) -> io::Result<()> { self.inner.flush() } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for LineWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("LineWriter") +diff --git a/cursor.rs b/cursor.rs +index 1b50233..6a7b44f 100644 +--- a/cursor.rs ++++ b/cursor.rs +@@ -8,10 +8,11 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + ++use core::prelude::v1::*; + use io::prelude::*; + +-use core::convert::TryInto; +-use cmp; ++#[cfg(feature = "collections")] use core::convert::TryInto; ++use core::cmp; + use io::{self, SeekFrom, Error, ErrorKind}; + + /// A `Cursor` wraps another type and provides it with a +@@ -79,7 +80,6 @@ use io::{self, SeekFrom, Error, ErrorKind}; + /// assert_eq!(&buff.get_ref()[5..15], &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]); + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Clone, Debug)] + pub struct Cursor { + inner: T, +@@ -98,7 +98,6 @@ impl Cursor { + /// # fn force_inference(_: &Cursor>) {} + /// # force_inference(&buff); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: T) -> Cursor { + Cursor { pos: 0, inner: inner } + } +@@ -116,7 +115,6 @@ impl Cursor { + /// + /// let vec = buff.into_inner(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> T { self.inner } + + /// Gets a reference to the underlying value in this cursor. +@@ -132,7 +130,6 @@ impl Cursor { + /// + /// let reference = buff.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &T { &self.inner } + + /// Gets a mutable reference to the underlying value in this cursor. +@@ -151,7 +148,6 @@ impl Cursor { + /// + /// let reference = buff.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut T { &mut self.inner } + + /// Returns the current position of this cursor. +@@ -173,7 +169,6 @@ impl Cursor { + /// buff.seek(SeekFrom::Current(-1)).unwrap(); + /// assert_eq!(buff.position(), 1); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn position(&self) -> u64 { self.pos } + + /// Sets the position of this cursor. +@@ -193,11 +188,9 @@ impl Cursor { + /// buff.set_position(4); + /// assert_eq!(buff.position(), 4); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn set_position(&mut self, pos: u64) { self.pos = pos; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl io::Seek for Cursor where T: AsRef<[u8]> { + fn seek(&mut self, style: SeekFrom) -> io::Result { + let pos = match style { +@@ -216,25 +209,27 @@ impl io::Seek for Cursor where T: AsRef<[u8]> { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Cursor where T: AsRef<[u8]> { + fn read(&mut self, buf: &mut [u8]) -> io::Result { +- let n = Read::read(&mut self.fill_buf()?, buf)?; ++ let n = Read::read(&mut self.get_buf()?, buf)?; + self.pos += n as u64; + Ok(n) + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl BufRead for Cursor where T: AsRef<[u8]> { +- fn fill_buf(&mut self) -> io::Result<&[u8]> { ++impl Cursor where T: AsRef<[u8]> { ++ fn get_buf(&mut self) -> io::Result<&[u8]> { + let amt = cmp::min(self.pos, self.inner.as_ref().len() as u64); + Ok(&self.inner.as_ref()[(amt as usize)..]) + } ++} ++ ++#[cfg(feature = "collections")] ++impl BufRead for Cursor where T: AsRef<[u8]> { ++ fn fill_buf(&mut self) -> io::Result<&[u8]> { self.get_buf() } + fn consume(&mut self, amt: usize) { self.pos += amt as u64; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for Cursor<&'a mut [u8]> { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -246,7 +241,7 @@ impl<'a> Write for Cursor<&'a mut [u8]> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature = "collections")] + impl Write for Cursor> { + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos: usize = self.position().try_into().map_err(|_| { +@@ -276,8 +271,8 @@ impl Write for Cursor> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "cursor_box_slice", since = "1.5.0")] +-impl Write for Cursor> { ++#[cfg(feature = "alloc")] ++impl Write for Cursor<::alloc::boxed::Box<[u8]>> { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos = cmp::min(self.pos, self.inner.len() as u64); +diff --git a/error.rs b/error.rs +index 795c89c..9a11eee 100644 +--- a/error.rs ++++ b/error.rs +@@ -8,11 +8,16 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use error; +-use fmt; +-use result; +-use sys; +-use convert::From; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++#[cfg(not(feature="alloc"))] use ::FakeBox as Box; ++use core::convert::Into; ++use core::fmt; ++use core::marker::{Send, Sync}; ++use core::option::Option::{self, Some, None}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(not(feature="collections"))] use ::ErrorString as String; ++use core::convert::From; + + /// A specialized [`Result`](../result/enum.Result.html) type for I/O + /// operations. +@@ -44,7 +49,6 @@ use convert::From; + /// Ok(buffer) + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub type Result = result::Result; + + /// The error type for I/O operations of the `Read`, `Write`, `Seek`, and +@@ -56,7 +60,6 @@ pub type Result = result::Result; + /// + /// [`ErrorKind`]: enum.ErrorKind.html + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Error { + repr: Repr, + } +@@ -64,13 +67,16 @@ pub struct Error { + enum Repr { + Os(i32), + Simple(ErrorKind), ++ #[cfg(feature="alloc")] + Custom(Box), ++ #[cfg(not(feature="alloc"))] ++ Custom(Custom), + } + + #[derive(Debug)] + struct Custom { + kind: ErrorKind, +- error: Box, ++ error: String, + } + + /// A list specifying general categories of I/O error. +@@ -82,47 +88,34 @@ struct Custom { + /// + /// [`io::Error`]: struct.Error.html + #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)] +-#[stable(feature = "rust1", since = "1.0.0")] + #[allow(deprecated)] + pub enum ErrorKind { + /// An entity was not found, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + NotFound, + /// The operation lacked the necessary privileges to complete. +- #[stable(feature = "rust1", since = "1.0.0")] + PermissionDenied, + /// The connection was refused by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionRefused, + /// The connection was reset by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionReset, + /// The connection was aborted (terminated) by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionAborted, + /// The network operation failed because it was not connected yet. +- #[stable(feature = "rust1", since = "1.0.0")] + NotConnected, + /// A socket address could not be bound because the address is already in + /// use elsewhere. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrInUse, + /// A nonexistent interface was requested or the requested address was not + /// local. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrNotAvailable, + /// The operation failed because a pipe was closed. +- #[stable(feature = "rust1", since = "1.0.0")] + BrokenPipe, + /// An entity already exists, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + AlreadyExists, + /// The operation needs to block to complete, but the blocking operation was + /// requested to not occur. +- #[stable(feature = "rust1", since = "1.0.0")] + WouldBlock, + /// A parameter was incorrect. +- #[stable(feature = "rust1", since = "1.0.0")] + InvalidInput, + /// Data not valid for the operation were encountered. + /// +@@ -134,10 +127,8 @@ pub enum ErrorKind { + /// `InvalidData` if the file's contents are not valid UTF-8. + /// + /// [`InvalidInput`]: #variant.InvalidInput +- #[stable(feature = "io_invalid_data", since = "1.2.0")] + InvalidData, + /// The I/O operation's timeout expired, causing it to be canceled. +- #[stable(feature = "rust1", since = "1.0.0")] + TimedOut, + /// An error returned when an operation could not be completed because a + /// call to [`write()`] returned [`Ok(0)`]. +@@ -148,15 +139,12 @@ pub enum ErrorKind { + /// + /// [`write()`]: ../../std/io/trait.Write.html#tymethod.write + /// [`Ok(0)`]: ../../std/io/type.Result.html +- #[stable(feature = "rust1", since = "1.0.0")] + WriteZero, + /// This operation was interrupted. + /// + /// Interrupted operations can typically be retried. +- #[stable(feature = "rust1", since = "1.0.0")] + Interrupted, + /// Any I/O error not part of this list. +- #[stable(feature = "rust1", since = "1.0.0")] + Other, + + /// An error returned when an operation could not be completed because an +@@ -165,15 +153,10 @@ pub enum ErrorKind { + /// This typically means that an operation could only succeed if it read a + /// particular number of bytes but only a smaller number of bytes could be + /// read. +- #[stable(feature = "read_exact", since = "1.6.0")] + UnexpectedEof, + + /// A marker variant that tells the compiler that users of this enum cannot + /// match it exhaustively. +- #[unstable(feature = "io_error_internals", +- reason = "better expressed through extensible enums that this \ +- enum cannot be exhaustively matched against", +- issue = "0")] + #[doc(hidden)] + __Nonexhaustive, + } +@@ -206,7 +189,6 @@ impl ErrorKind { + + /// Intended for use for errors not exposed to the user, where allocating onto + /// the heap (for normal construction via Error::new) is too costly. +-#[stable(feature = "io_error_from_errorkind", since = "1.14.0")] + impl From for Error { + fn from(kind: ErrorKind) -> Error { + Error { +@@ -234,14 +216,13 @@ impl Error { + /// // errors can also be created from other errors + /// let custom_error2 = Error::new(ErrorKind::Interrupted, custom_error); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(kind: ErrorKind, error: E) -> Error +- where E: Into> ++ where E: Into + { + Self::_new(kind, error.into()) + } + +- fn _new(kind: ErrorKind, error: Box) -> Error { ++ fn _new(kind: ErrorKind, error: String) -> Error { + Error { + repr: Repr::Custom(Box::new(Custom { + kind: kind, +@@ -250,24 +231,6 @@ impl Error { + } + } + +- /// Returns an error representing the last OS error which occurred. +- /// +- /// This function reads the value of `errno` for the target platform (e.g. +- /// `GetLastError` on Windows) and will return a corresponding instance of +- /// `Error` for the error code. +- /// +- /// # Examples +- /// +- /// ``` +- /// use std::io::Error; +- /// +- /// println!("last OS error: {:?}", Error::last_os_error()); +- /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] +- pub fn last_os_error() -> Error { +- Error::from_raw_os_error(sys::os::errno() as i32) +- } +- + /// Creates a new instance of an `Error` from a particular OS error code. + /// + /// # Examples +@@ -293,7 +256,6 @@ impl Error { + /// assert_eq!(error.kind(), io::ErrorKind::AddrInUse); + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn from_raw_os_error(code: i32) -> Error { + Error { repr: Repr::Os(code) } + } +@@ -324,7 +286,6 @@ impl Error { + /// print_os_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn raw_os_error(&self) -> Option { + match self.repr { + Repr::Os(i) => Some(i), +@@ -358,12 +319,11 @@ impl Error { + /// print_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_ref(&self) -> Option<&(error::Error+Send+Sync+'static)> { ++ pub fn get_ref(&self) -> Option<&String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref c) => Some(&*c.error), ++ Repr::Custom(ref c) => Some(&c.error), + } + } + +@@ -429,12 +389,11 @@ impl Error { + /// print_error(&change_error(Error::new(ErrorKind::Other, MyError::new()))); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_mut(&mut self) -> Option<&mut (error::Error+Send+Sync+'static)> { ++ pub fn get_mut(&mut self) -> Option<&mut String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref mut c) => Some(&mut *c.error), ++ Repr::Custom(ref mut c) => Some(&mut c.error), + } + } + +@@ -463,8 +422,7 @@ impl Error { + /// print_error(Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn into_inner(self) -> Option> { ++ pub fn into_inner(self) -> Option { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +@@ -490,10 +448,9 @@ impl Error { + /// print_error(Error::new(ErrorKind::AddrInUse, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn kind(&self) -> ErrorKind { + match self.repr { +- Repr::Os(code) => sys::decode_error_kind(code), ++ Repr::Os(_code) => ErrorKind::Other, + Repr::Custom(ref c) => c.kind, + Repr::Simple(kind) => kind, + } +@@ -504,21 +461,18 @@ impl fmt::Debug for Repr { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match *self { + Repr::Os(ref code) => +- fmt.debug_struct("Os").field("code", code) +- .field("message", &sys::os::error_string(*code)).finish(), ++ fmt.debug_struct("Os").field("code", code).finish(), + Repr::Custom(ref c) => fmt.debug_tuple("Custom").field(c).finish(), + Repr::Simple(kind) => fmt.debug_tuple("Kind").field(&kind).finish(), + } + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for Error { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match self.repr { + Repr::Os(code) => { +- let detail = sys::os::error_string(code); +- write!(fmt, "{} (os error {})", detail, code) ++ write!(fmt, "os error {}", code) + } + Repr::Custom(ref c) => c.error.fmt(fmt), + Repr::Simple(kind) => write!(fmt, "{}", kind.as_str()), +@@ -526,24 +480,6 @@ impl fmt::Display for Error { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for Error { +- fn description(&self) -> &str { +- match self.repr { +- Repr::Os(..) | Repr::Simple(..) => self.kind().as_str(), +- Repr::Custom(ref c) => c.error.description(), +- } +- } +- +- fn cause(&self) -> Option<&error::Error> { +- match self.repr { +- Repr::Os(..) => None, +- Repr::Simple(..) => None, +- Repr::Custom(ref c) => c.error.cause(), +- } +- } +-} +- + fn _assert_error_is_sync_send() { + fn _is_sync_send() {} + _is_sync_send::(); +diff --git a/impls.rs b/impls.rs +index f691289..c4374d3 100644 +--- a/impls.rs ++++ b/impls.rs +@@ -8,26 +8,31 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use cmp; +-use io::{self, SeekFrom, Read, Write, Seek, BufRead, Error, ErrorKind}; +-use fmt; +-use mem; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++use core::cmp; ++use io::{self, SeekFrom, Read, Write, Seek, Error, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; ++use core::fmt; ++use core::mem; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(feature="collections")] use collections::vec::Vec; + + // ============================================================================= + // Forwarding implementations + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, R: Read + ?Sized> Read for &'a mut R { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -38,7 +43,6 @@ impl<'a, R: Read + ?Sized> Read for &'a mut R { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, W: Write + ?Sized> Write for &'a mut W { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -56,12 +60,11 @@ impl<'a, W: Write + ?Sized> Write for &'a mut W { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, S: Seek + ?Sized> Seek for &'a mut S { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -80,18 +83,20 @@ impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Read for Box { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -102,7 +107,7 @@ impl Read for Box { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Write for Box { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -120,12 +125,12 @@ impl Write for Box { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Seek for Box { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Box { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -151,7 +156,6 @@ impl BufRead for Box { + /// + /// Note that reading updates the slice to point to the yet unread part. + /// The slice will be empty when EOF is reached. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Read for &'a [u8] { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { +@@ -193,7 +197,7 @@ impl<'a> Read for &'a [u8] { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a> BufRead for &'a [u8] { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(*self) } +@@ -207,7 +211,6 @@ impl<'a> BufRead for &'a [u8] { + /// + /// Note that writing updates the slice to point to the yet unwritten part. + /// The slice will be empty when it has been completely overwritten. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for &'a mut [u8] { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -233,7 +236,7 @@ impl<'a> Write for &'a mut [u8] { + + /// Write is implemented for `Vec` by appending to the vector. + /// The vector will grow as needed. +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Write for Vec { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { +diff --git a/memchr.rs b/memchr.rs +index 3824a5f..312cf47 100644 +--- a/memchr.rs ++++ b/memchr.rs +@@ -11,10 +11,12 @@ + // Original implementation taken from rust-memchr + // Copyright 2015 Andrew Gallant, bluss and Nicolas Koch + ++pub use self::fallback::{memchr,memrchr}; ++ + #[allow(dead_code)] + pub mod fallback { +- use cmp; +- use mem; ++ use core::cmp; ++ use core::mem; + + const LO_U64: u64 = 0x0101010101010101; + const HI_U64: u64 = 0x8080808080808080; +diff --git a/mod.rs b/mod.rs +index b07da0d..72f965c 100644 +--- a/mod.rs ++++ b/mod.rs +@@ -253,44 +253,34 @@ + //! [`try!`]: ../macro.try.html + //! [`read()`]: trait.Read.html#tymethod.read + +-#![stable(feature = "rust1", since = "1.0.0")] +- +-use cmp; ++use core::cmp; + use std_unicode::str as core_str; +-use error as std_error; +-use fmt; +-use result; +-use str; +-use memchr; +- +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::{BufReader, BufWriter, LineWriter}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::IntoInnerError; +-#[stable(feature = "rust1", since = "1.0.0")] ++use core::fmt; ++use core::iter::{Iterator}; ++use core::marker::Sized; ++#[cfg(feature="collections")] use core::ops::{Drop, FnOnce}; ++use core::option::Option::{self, Some, None}; ++use core::result::Result::{Ok, Err}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++use core::str; ++#[cfg(feature="collections")] use collections::vec::Vec; ++mod memchr; ++ ++#[cfg(feature="collections")] pub use self::buffered::{BufReader, BufWriter, LineWriter}; ++#[cfg(feature="collections")] pub use self::buffered::IntoInnerError; + pub use self::cursor::Cursor; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::error::{Result, Error, ErrorKind}; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::util::{copy, sink, Sink, empty, Empty, repeat, Repeat}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{stdin, stdout, stderr, _print, Stdin, Stdout, Stderr}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{StdoutLock, StderrLock, StdinLock}; +-#[unstable(feature = "libstd_io_internals", issue = "0")] +-#[doc(no_inline, hidden)] +-pub use self::stdio::{set_panic, set_print}; + + pub mod prelude; +-mod buffered; ++#[cfg(feature="collections")] mod buffered; + mod cursor; + mod error; + mod impls; +-mod lazy; + mod util; +-mod stdio; + +-const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; ++const DEFAULT_BUF_SIZE: usize = 8 * 1024; + + // A few methods below (read_to_string, read_line) will append data into a + // `String` buffer, but we need to be pretty careful when doing this. The +@@ -310,6 +300,7 @@ const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; + // 2. We're passing a raw buffer to the function `f`, and it is expected that + // the function only *appends* bytes to the buffer. We'll get undefined + // behavior if existing bytes are overwritten to have non-UTF-8 data. ++#[cfg(feature="collections")] + fn append_to_string(buf: &mut String, f: F) -> Result + where F: FnOnce(&mut Vec) -> Result + { +@@ -341,6 +332,7 @@ fn append_to_string(buf: &mut String, f: F) -> Result + // of data to return. Simply tacking on an extra DEFAULT_BUF_SIZE space every + // time is 4,500 times (!) slower than this if the reader has a very small + // amount of data to return. ++#[cfg(feature="collections")] + fn read_to_end(r: &mut R, buf: &mut Vec) -> Result { + let start_len = buf.len(); + let mut len = start_len; +@@ -423,7 +415,6 @@ fn read_to_end(r: &mut R, buf: &mut Vec) -> Result + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Read { + /// Pull some bytes from this source into the specified buffer, returning + /// how many bytes were read. +@@ -473,7 +464,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read(&mut self, buf: &mut [u8]) -> Result; + + /// Read all bytes until EOF in this source, placing them into `buf`. +@@ -515,7 +505,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_end(&mut self, buf: &mut Vec) -> Result { + read_to_end(self, buf) + } +@@ -553,7 +543,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_string(&mut self, buf: &mut String) -> Result { + // Note that we do *not* call `.read_to_end()` here. We are passing + // `&mut Vec` (the raw contents of `buf`) into the `read_to_end` +@@ -614,7 +604,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "read_exact", since = "1.6.0")] + fn read_exact(&mut self, mut buf: &mut [u8]) -> Result<()> { + while !buf.is_empty() { + match self.read(buf) { +@@ -666,7 +655,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + + /// Transforms this `Read` instance to an `Iterator` over its bytes. +@@ -696,7 +684,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn bytes(self) -> Bytes where Self: Sized { + Bytes { inner: self } + } +@@ -733,10 +720,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[unstable(feature = "io", reason = "the semantics of a partial read/write \ +- of where errors happen is currently \ +- unclear and may change", +- issue = "27802")] + fn chars(self) -> Chars where Self: Sized { + Chars { inner: self } + } +@@ -771,7 +754,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn chain(self, next: R) -> Chain where Self: Sized { + Chain { first: self, second: next, done_first: false } + } +@@ -805,7 +787,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn take(self, limit: u64) -> Take where Self: Sized { + Take { inner: self, limit: limit } + } +@@ -845,7 +826,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Write { + /// Write a buffer into this object, returning how many bytes were written. + /// +@@ -885,7 +865,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write(&mut self, buf: &[u8]) -> Result; + + /// Flush this output stream, ensuring that all intermediately buffered +@@ -911,7 +890,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn flush(&mut self) -> Result<()>; + + /// Attempts to write an entire buffer into this write. +@@ -938,7 +916,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_all(&mut self, mut buf: &[u8]) -> Result<()> { + while !buf.is_empty() { + match self.write(buf) { +@@ -990,7 +967,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_fmt(&mut self, fmt: fmt::Arguments) -> Result<()> { + // Create a shim which translates a Write to a fmt::Write and saves + // off I/O errors. instead of discarding them +@@ -1046,7 +1022,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + } + +@@ -1076,7 +1051,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Seek { + /// Seek to an offset, in bytes, in a stream. + /// +@@ -1092,7 +1066,6 @@ pub trait Seek { + /// Seeking to a negative offset is considered an error. + /// + /// [`SeekFrom::Start`]: enum.SeekFrom.html#variant.Start +- #[stable(feature = "rust1", since = "1.0.0")] + fn seek(&mut self, pos: SeekFrom) -> Result; + } + +@@ -1102,29 +1075,26 @@ pub trait Seek { + /// + /// [`Seek`]: trait.Seek.html + #[derive(Copy, PartialEq, Eq, Clone, Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub enum SeekFrom { + /// Set the offset to the provided number of bytes. +- #[stable(feature = "rust1", since = "1.0.0")] +- Start(#[stable(feature = "rust1", since = "1.0.0")] u64), ++ Start(u64), + + /// Set the offset to the size of this object plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- End(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ End(i64), + + /// Set the offset to the current position plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- Current(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ Current(i64), + } + ++#[cfg(feature="collections")] + fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + -> Result { + let mut read = 0; +@@ -1204,7 +1174,7 @@ fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + /// # } + /// ``` + /// +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub trait BufRead: Read { + /// Fills the internal buffer of this object, returning the buffer contents. + /// +@@ -1249,7 +1219,6 @@ pub trait BufRead: Read { + /// // ensure the bytes we worked with aren't returned again later + /// stdin.consume(length); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn fill_buf(&mut self) -> Result<&[u8]>; + + /// Tells this buffer that `amt` bytes have been consumed from the buffer, +@@ -1271,7 +1240,6 @@ pub trait BufRead: Read { + /// that method's example includes an example of `consume()`. + /// + /// [`fill_buf()`]: #tymethod.fill_buf +- #[stable(feature = "rust1", since = "1.0.0")] + fn consume(&mut self, amt: usize); + + /// Read all bytes into `buf` until the delimiter `byte` or EOF is reached. +@@ -1313,7 +1281,6 @@ pub trait BufRead: Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_until(&mut self, byte: u8, buf: &mut Vec) -> Result { + read_until(self, byte, buf) + } +@@ -1360,7 +1327,6 @@ pub trait BufRead: Read { + /// buffer.clear(); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_line(&mut self, buf: &mut String) -> Result { + // Note that we are not calling the `.read_until` method here, but + // rather our hardcoded implementation. For more details as to why, see +@@ -1397,7 +1363,6 @@ pub trait BufRead: Read { + /// println!("{:?}", content.unwrap()); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn split(self, byte: u8) -> Split where Self: Sized { + Split { buf: self, delim: byte } + } +@@ -1425,7 +1390,6 @@ pub trait BufRead: Read { + /// println!("{}", line.unwrap()); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn lines(self) -> Lines where Self: Sized { + Lines { buf: self } + } +@@ -1437,14 +1401,12 @@ pub trait BufRead: Read { + /// Please see the documentation of [`chain()`] for more details. + /// + /// [`chain()`]: trait.Read.html#method.chain +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Chain { + first: T, + second: U, + done_first: bool, + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Chain { + fn read(&mut self, buf: &mut [u8]) -> Result { + if !self.done_first { +@@ -1457,7 +1419,7 @@ impl Read for Chain { + } + } + +-#[stable(feature = "chain_bufread", since = "1.9.0")] ++#[cfg(feature="collections")] + impl BufRead for Chain { + fn fill_buf(&mut self) -> Result<&[u8]> { + if !self.done_first { +@@ -1484,7 +1446,6 @@ impl BufRead for Chain { + /// Please see the documentation of [`take()`] for more details. + /// + /// [`take()`]: trait.Read.html#method.take +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Take { + inner: T, + limit: u64, +@@ -1518,7 +1479,6 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn limit(&self) -> u64 { self.limit } + + /// Consumes the `Take`, returning the wrapped reader. +@@ -1541,13 +1501,11 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "io_take_into_inner", since = "1.15.0")] + pub fn into_inner(self) -> T { + self.inner + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Take { + fn read(&mut self, buf: &mut [u8]) -> Result { + // Don't call into inner reader at all at EOF because it may still block +@@ -1562,7 +1520,7 @@ impl Read for Take { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Take { + fn fill_buf(&mut self) -> Result<&[u8]> { + // Don't call into inner reader at all at EOF because it may still block +@@ -1601,12 +1559,10 @@ fn read_one_byte(reader: &mut Read) -> Option> { + /// Please see the documentation of [`bytes()`] for more details. + /// + /// [`bytes()`]: trait.Read.html#method.bytes +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Bytes { + inner: R, + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Iterator for Bytes { + type Item = Result; + +@@ -1621,8 +1577,6 @@ impl Iterator for Bytes { + /// Please see the documentation of `chars()` for more details. + /// + /// [chars]: trait.Read.html#method.chars +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + pub struct Chars { + inner: R, + } +@@ -1630,8 +1584,6 @@ pub struct Chars { + /// An enumeration of possible errors that can be generated from the `Chars` + /// adapter. + #[derive(Debug)] +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + pub enum CharsError { + /// Variant representing that the underlying stream was read successfully + /// but it did not contain valid utf8 data. +@@ -1641,8 +1593,6 @@ pub enum CharsError { + Other(Error), + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl Iterator for Chars { + type Item = result::Result; + +@@ -1674,25 +1624,6 @@ impl Iterator for Chars { + } + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] +-impl std_error::Error for CharsError { +- fn description(&self) -> &str { +- match *self { +- CharsError::NotUtf8 => "invalid utf8 encoding", +- CharsError::Other(ref e) => std_error::Error::description(e), +- } +- } +- fn cause(&self) -> Option<&std_error::Error> { +- match *self { +- CharsError::NotUtf8 => None, +- CharsError::Other(ref e) => e.cause(), +- } +- } +-} +- +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl fmt::Display for CharsError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + match *self { +@@ -1711,13 +1642,13 @@ impl fmt::Display for CharsError { + /// `BufRead`. Please see the documentation of `split()` for more details. + /// + /// [split]: trait.BufRead.html#method.split +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub struct Split { + buf: B, + delim: u8, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Split { + type Item = Result>; + +@@ -1742,12 +1673,12 @@ impl Iterator for Split { + /// `BufRead`. Please see the documentation of `lines()` for more details. + /// + /// [lines]: trait.BufRead.html#method.lines +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub struct Lines { + buf: B, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Lines { + type Item = Result; + +diff --git a/prelude.rs b/prelude.rs +index 8772d0f..49d66c9 100644 +--- a/prelude.rs ++++ b/prelude.rs +@@ -18,7 +18,8 @@ + //! use std::io::prelude::*; + //! ``` + +-#![stable(feature = "rust1", since = "1.0.0")] ++pub use super::{Read, Write, Seek}; ++#[cfg(feature="collections")] pub use super::BufRead; + +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use super::{Read, Write, BufRead, Seek}; ++#[cfg(feature="collections")] pub use alloc::boxed::Box; ++#[cfg(feature="collections")] pub use collections::vec::Vec; +diff --git a/util.rs b/util.rs +index 2c68802..93bcfc3 100644 +--- a/util.rs ++++ b/util.rs +@@ -10,7 +10,8 @@ + + #![allow(missing_copy_implementations)] + +-use io::{self, Read, Write, ErrorKind, BufRead}; ++use io::{self, Read, Write, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; + + /// Copies the entire contents of a reader into a writer. + /// +@@ -42,7 +43,6 @@ use io::{self, Read, Write, ErrorKind, BufRead}; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn copy(reader: &mut R, writer: &mut W) -> io::Result + where R: Read, W: Write + { +@@ -66,7 +66,6 @@ pub fn copy(reader: &mut R, writer: &mut W) -> io::Result< + /// the documentation of `empty()` for more details. + /// + /// [empty]: fn.empty.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Empty { _priv: () } + + /// Constructs a new handle to an empty reader. +@@ -84,14 +83,12 @@ pub struct Empty { _priv: () } + /// io::empty().read_to_string(&mut buffer).unwrap(); + /// assert!(buffer.is_empty()); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn empty() -> Empty { Empty { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Empty { + fn read(&mut self, _buf: &mut [u8]) -> io::Result { Ok(0) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Empty { + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(&[]) } + fn consume(&mut self, _n: usize) {} +@@ -103,7 +100,6 @@ impl BufRead for Empty { + /// see the documentation of `repeat()` for more details. + /// + /// [repeat]: fn.repeat.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Repeat { byte: u8 } + + /// Creates an instance of a reader that infinitely repeats one byte. +@@ -120,10 +116,8 @@ pub struct Repeat { byte: u8 } + /// io::repeat(0b101).read_exact(&mut buffer).unwrap(); + /// assert_eq!(buffer, [0b101, 0b101, 0b101]); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn repeat(byte: u8) -> Repeat { Repeat { byte: byte } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Repeat { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + for slot in &mut *buf { +@@ -139,7 +133,6 @@ impl Read for Repeat { + /// see the documentation of `sink()` for more details. + /// + /// [sink]: fn.sink.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Sink { _priv: () } + + /// Creates an instance of a writer which will successfully consume all data. +@@ -156,10 +149,8 @@ pub struct Sink { _priv: () } + /// let num_bytes = io::sink().write(&buffer).unwrap(); + /// assert_eq!(num_bytes, 5); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn sink() -> Sink { Sink { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for Sink { + fn write(&mut self, buf: &[u8]) -> io::Result { Ok(buf.len()) } + fn flush(&mut self) -> io::Result<()> { Ok(()) } diff --git a/patches/a2d176e8f4774b84db22540a45eed7b29482f154.patch b/patches/a2d176e8f4774b84db22540a45eed7b29482f154.patch new file mode 100644 index 0000000..f742ddd --- /dev/null +++ b/patches/a2d176e8f4774b84db22540a45eed7b29482f154.patch @@ -0,0 +1,1510 @@ +diff --git a/buffered.rs b/buffered.rs +index f98a3a8..1601229 100644 +--- a/buffered.rs ++++ b/buffered.rs +@@ -10,13 +10,13 @@ + + //! Buffering wrappers for I/O traits + ++use core::prelude::v1::*; + use io::prelude::*; + +-use cmp; +-use error; +-use fmt; ++use core::cmp; ++use core::fmt; + use io::{self, DEFAULT_BUF_SIZE, Error, ErrorKind, SeekFrom}; +-use memchr; ++use io::memchr; + + /// The `BufReader` struct adds buffering to any reader. + /// +@@ -46,7 +46,6 @@ use memchr; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufReader { + inner: R, + buf: Box<[u8]>, +@@ -69,7 +68,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: R) -> BufReader { + BufReader::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -90,7 +88,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: R) -> BufReader { + BufReader { + inner: inner, +@@ -118,7 +115,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &R { &self.inner } + + /// Gets a mutable reference to the underlying reader. +@@ -139,7 +135,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut R { &mut self.inner } + + /// Unwraps this `BufReader`, returning the underlying reader. +@@ -160,11 +155,9 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> R { self.inner } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for BufReader { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + // If we don't have any buffered data and we're doing a massive read +@@ -182,7 +175,6 @@ impl Read for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl BufRead for BufReader { + fn fill_buf(&mut self) -> io::Result<&[u8]> { + // If we've reached the end of our internal buffer then we need to fetch +@@ -202,7 +194,6 @@ impl BufRead for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufReader where R: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufReader") +@@ -212,7 +203,6 @@ impl fmt::Debug for BufReader where R: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufReader { + /// Seek to an offset, in bytes, in the underlying reader. + /// +@@ -305,7 +295,6 @@ impl Seek for BufReader { + /// [`Write`]: ../../std/io/trait.Write.html + /// [`write`]: ../../std/net/struct.TcpStream.html#method.write + /// [`TcpStream`]: ../../std/net/struct.TcpStream.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufWriter { + inner: Option, + buf: Vec, +@@ -340,7 +329,6 @@ pub struct BufWriter { + /// }; + /// ``` + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct IntoInnerError(W, Error); + + impl BufWriter { +@@ -354,7 +342,6 @@ impl BufWriter { + /// + /// let mut buffer = BufWriter::new(TcpStream::connect("127.0.0.1:34254").unwrap()); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> BufWriter { + BufWriter::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -372,7 +359,6 @@ impl BufWriter { + /// let stream = TcpStream::connect("127.0.0.1:34254").unwrap(); + /// let mut buffer = BufWriter::with_capacity(100, stream); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> BufWriter { + BufWriter { + inner: Some(inner), +@@ -421,7 +407,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.as_ref().unwrap() } + + /// Gets a mutable reference to the underlying writer. +@@ -439,7 +424,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.as_mut().unwrap() } + + /// Unwraps this `BufWriter`, returning the underlying writer. +@@ -457,7 +441,6 @@ impl BufWriter { + /// // unwrap the TcpStream and flush the buffer + /// let stream = buffer.into_inner().unwrap(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(mut self) -> Result>> { + match self.flush_buf() { + Err(e) => Err(IntoInnerError(self, e)), +@@ -466,7 +449,6 @@ impl BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for BufWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.buf.len() + buf.len() > self.buf.capacity() { +@@ -486,7 +468,6 @@ impl Write for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufWriter") +@@ -496,7 +477,6 @@ impl fmt::Debug for BufWriter where W: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufWriter { + /// Seek to the offset, in bytes, in the underlying writer. + /// +@@ -506,7 +486,6 @@ impl Seek for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Drop for BufWriter { + fn drop(&mut self) { + if self.inner.is_some() && !self.panicked { +@@ -545,7 +524,6 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn error(&self) -> &Error { &self.1 } + + /// Returns the buffered writer instance which generated the error. +@@ -578,23 +556,13 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> W { self.0 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl From> for Error { + fn from(iie: IntoInnerError) -> Error { iie.1 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for IntoInnerError { +- fn description(&self) -> &str { +- error::Error::description(self.error()) +- } +-} +- +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for IntoInnerError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.error().fmt(f) +@@ -649,7 +617,6 @@ impl fmt::Display for IntoInnerError { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct LineWriter { + inner: BufWriter, + need_flush: bool, +@@ -670,7 +637,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> LineWriter { + // Lines typically aren't that long, don't use a giant buffer + LineWriter::with_capacity(1024, inner) +@@ -691,7 +657,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> LineWriter { + LineWriter { + inner: BufWriter::with_capacity(cap, inner), +@@ -715,7 +680,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.get_ref() } + + /// Gets a mutable reference to the underlying writer. +@@ -738,7 +702,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.get_mut() } + + /// Unwraps this `LineWriter`, returning the underlying writer. +@@ -760,7 +723,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> Result>> { + self.inner.into_inner().map_err(|IntoInnerError(buf, e)| { + IntoInnerError(LineWriter { +@@ -771,7 +733,6 @@ impl LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for LineWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.need_flush { +@@ -816,7 +777,6 @@ impl Write for LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for LineWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("LineWriter") +diff --git a/cursor.rs b/cursor.rs +index 60767ea..199cad1 100644 +--- a/cursor.rs ++++ b/cursor.rs +@@ -8,10 +8,11 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + ++use core::prelude::v1::*; + use io::prelude::*; + +-use core::convert::TryInto; +-use cmp; ++#[cfg(feature = "collections")] use core::convert::TryInto; ++use core::cmp; + use io::{self, SeekFrom, Error, ErrorKind}; + + /// A `Cursor` wraps another type and provides it with a +@@ -79,7 +80,6 @@ use io::{self, SeekFrom, Error, ErrorKind}; + /// assert_eq!(&buff.get_ref()[5..15], &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]); + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Clone, Debug)] + pub struct Cursor { + inner: T, +@@ -98,7 +98,6 @@ impl Cursor { + /// # fn force_inference(_: &Cursor>) {} + /// # force_inference(&buff); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: T) -> Cursor { + Cursor { pos: 0, inner: inner } + } +@@ -116,7 +115,6 @@ impl Cursor { + /// + /// let vec = buff.into_inner(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> T { self.inner } + + /// Gets a reference to the underlying value in this cursor. +@@ -132,7 +130,6 @@ impl Cursor { + /// + /// let reference = buff.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &T { &self.inner } + + /// Gets a mutable reference to the underlying value in this cursor. +@@ -151,7 +148,6 @@ impl Cursor { + /// + /// let reference = buff.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut T { &mut self.inner } + + /// Returns the current position of this cursor. +@@ -173,7 +169,6 @@ impl Cursor { + /// buff.seek(SeekFrom::Current(-1)).unwrap(); + /// assert_eq!(buff.position(), 1); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn position(&self) -> u64 { self.pos } + + /// Sets the position of this cursor. +@@ -193,11 +188,9 @@ impl Cursor { + /// buff.set_position(4); + /// assert_eq!(buff.position(), 4); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn set_position(&mut self, pos: u64) { self.pos = pos; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl io::Seek for Cursor where T: AsRef<[u8]> { + fn seek(&mut self, style: SeekFrom) -> io::Result { + let (base_pos, offset) = match style { +@@ -218,25 +211,27 @@ impl io::Seek for Cursor where T: AsRef<[u8]> { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Cursor where T: AsRef<[u8]> { + fn read(&mut self, buf: &mut [u8]) -> io::Result { +- let n = Read::read(&mut self.fill_buf()?, buf)?; ++ let n = Read::read(&mut self.get_buf()?, buf)?; + self.pos += n as u64; + Ok(n) + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl BufRead for Cursor where T: AsRef<[u8]> { +- fn fill_buf(&mut self) -> io::Result<&[u8]> { ++impl Cursor where T: AsRef<[u8]> { ++ fn get_buf(&mut self) -> io::Result<&[u8]> { + let amt = cmp::min(self.pos, self.inner.as_ref().len() as u64); + Ok(&self.inner.as_ref()[(amt as usize)..]) + } ++} ++ ++#[cfg(feature = "collections")] ++impl BufRead for Cursor where T: AsRef<[u8]> { ++ fn fill_buf(&mut self) -> io::Result<&[u8]> { self.get_buf() } + fn consume(&mut self, amt: usize) { self.pos += amt as u64; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for Cursor<&'a mut [u8]> { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -248,7 +243,7 @@ impl<'a> Write for Cursor<&'a mut [u8]> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature = "collections")] + impl Write for Cursor> { + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos: usize = self.position().try_into().map_err(|_| { +@@ -278,8 +273,8 @@ impl Write for Cursor> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "cursor_box_slice", since = "1.5.0")] +-impl Write for Cursor> { ++#[cfg(feature = "alloc")] ++impl Write for Cursor<::alloc::boxed::Box<[u8]>> { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos = cmp::min(self.pos, self.inner.len() as u64); +diff --git a/error.rs b/error.rs +index 6d4da2e..14cfe1a 100644 +--- a/error.rs ++++ b/error.rs +@@ -8,11 +8,16 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use error; +-use fmt; +-use result; +-use sys; +-use convert::From; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++#[cfg(not(feature="alloc"))] use ::FakeBox as Box; ++use core::convert::Into; ++use core::fmt; ++use core::marker::{Send, Sync}; ++use core::option::Option::{self, Some, None}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(not(feature="collections"))] use ::ErrorString as String; ++use core::convert::From; + + /// A specialized [`Result`](../result/enum.Result.html) type for I/O + /// operations. +@@ -44,7 +49,6 @@ use convert::From; + /// Ok(buffer) + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub type Result = result::Result; + + /// The error type for I/O operations of the `Read`, `Write`, `Seek`, and +@@ -56,7 +60,6 @@ pub type Result = result::Result; + /// + /// [`ErrorKind`]: enum.ErrorKind.html + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Error { + repr: Repr, + } +@@ -64,13 +67,16 @@ pub struct Error { + enum Repr { + Os(i32), + Simple(ErrorKind), ++ #[cfg(feature="alloc")] + Custom(Box), ++ #[cfg(not(feature="alloc"))] ++ Custom(Custom), + } + + #[derive(Debug)] + struct Custom { + kind: ErrorKind, +- error: Box, ++ error: String, + } + + /// A list specifying general categories of I/O error. +@@ -82,47 +88,34 @@ struct Custom { + /// + /// [`io::Error`]: struct.Error.html + #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)] +-#[stable(feature = "rust1", since = "1.0.0")] + #[allow(deprecated)] + pub enum ErrorKind { + /// An entity was not found, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + NotFound, + /// The operation lacked the necessary privileges to complete. +- #[stable(feature = "rust1", since = "1.0.0")] + PermissionDenied, + /// The connection was refused by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionRefused, + /// The connection was reset by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionReset, + /// The connection was aborted (terminated) by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionAborted, + /// The network operation failed because it was not connected yet. +- #[stable(feature = "rust1", since = "1.0.0")] + NotConnected, + /// A socket address could not be bound because the address is already in + /// use elsewhere. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrInUse, + /// A nonexistent interface was requested or the requested address was not + /// local. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrNotAvailable, + /// The operation failed because a pipe was closed. +- #[stable(feature = "rust1", since = "1.0.0")] + BrokenPipe, + /// An entity already exists, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + AlreadyExists, + /// The operation needs to block to complete, but the blocking operation was + /// requested to not occur. +- #[stable(feature = "rust1", since = "1.0.0")] + WouldBlock, + /// A parameter was incorrect. +- #[stable(feature = "rust1", since = "1.0.0")] + InvalidInput, + /// Data not valid for the operation were encountered. + /// +@@ -134,10 +127,8 @@ pub enum ErrorKind { + /// `InvalidData` if the file's contents are not valid UTF-8. + /// + /// [`InvalidInput`]: #variant.InvalidInput +- #[stable(feature = "io_invalid_data", since = "1.2.0")] + InvalidData, + /// The I/O operation's timeout expired, causing it to be canceled. +- #[stable(feature = "rust1", since = "1.0.0")] + TimedOut, + /// An error returned when an operation could not be completed because a + /// call to [`write()`] returned [`Ok(0)`]. +@@ -148,15 +139,12 @@ pub enum ErrorKind { + /// + /// [`write()`]: ../../std/io/trait.Write.html#tymethod.write + /// [`Ok(0)`]: ../../std/io/type.Result.html +- #[stable(feature = "rust1", since = "1.0.0")] + WriteZero, + /// This operation was interrupted. + /// + /// Interrupted operations can typically be retried. +- #[stable(feature = "rust1", since = "1.0.0")] + Interrupted, + /// Any I/O error not part of this list. +- #[stable(feature = "rust1", since = "1.0.0")] + Other, + + /// An error returned when an operation could not be completed because an +@@ -165,15 +153,10 @@ pub enum ErrorKind { + /// This typically means that an operation could only succeed if it read a + /// particular number of bytes but only a smaller number of bytes could be + /// read. +- #[stable(feature = "read_exact", since = "1.6.0")] + UnexpectedEof, + + /// A marker variant that tells the compiler that users of this enum cannot + /// match it exhaustively. +- #[unstable(feature = "io_error_internals", +- reason = "better expressed through extensible enums that this \ +- enum cannot be exhaustively matched against", +- issue = "0")] + #[doc(hidden)] + __Nonexhaustive, + } +@@ -206,7 +189,6 @@ impl ErrorKind { + + /// Intended for use for errors not exposed to the user, where allocating onto + /// the heap (for normal construction via Error::new) is too costly. +-#[stable(feature = "io_error_from_errorkind", since = "1.14.0")] + impl From for Error { + fn from(kind: ErrorKind) -> Error { + Error { +@@ -234,14 +216,13 @@ impl Error { + /// // errors can also be created from other errors + /// let custom_error2 = Error::new(ErrorKind::Interrupted, custom_error); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(kind: ErrorKind, error: E) -> Error +- where E: Into> ++ where E: Into + { + Self::_new(kind, error.into()) + } + +- fn _new(kind: ErrorKind, error: Box) -> Error { ++ fn _new(kind: ErrorKind, error: String) -> Error { + Error { + repr: Repr::Custom(Box::new(Custom { + kind: kind, +@@ -250,24 +231,6 @@ impl Error { + } + } + +- /// Returns an error representing the last OS error which occurred. +- /// +- /// This function reads the value of `errno` for the target platform (e.g. +- /// `GetLastError` on Windows) and will return a corresponding instance of +- /// `Error` for the error code. +- /// +- /// # Examples +- /// +- /// ``` +- /// use std::io::Error; +- /// +- /// println!("last OS error: {:?}", Error::last_os_error()); +- /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] +- pub fn last_os_error() -> Error { +- Error::from_raw_os_error(sys::os::errno() as i32) +- } +- + /// Creates a new instance of an `Error` from a particular OS error code. + /// + /// # Examples +@@ -293,7 +256,6 @@ impl Error { + /// assert_eq!(error.kind(), io::ErrorKind::AddrInUse); + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn from_raw_os_error(code: i32) -> Error { + Error { repr: Repr::Os(code) } + } +@@ -324,7 +286,6 @@ impl Error { + /// print_os_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn raw_os_error(&self) -> Option { + match self.repr { + Repr::Os(i) => Some(i), +@@ -358,12 +319,11 @@ impl Error { + /// print_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_ref(&self) -> Option<&(error::Error+Send+Sync+'static)> { ++ pub fn get_ref(&self) -> Option<&String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref c) => Some(&*c.error), ++ Repr::Custom(ref c) => Some(&c.error), + } + } + +@@ -429,12 +389,11 @@ impl Error { + /// print_error(&change_error(Error::new(ErrorKind::Other, MyError::new()))); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_mut(&mut self) -> Option<&mut (error::Error+Send+Sync+'static)> { ++ pub fn get_mut(&mut self) -> Option<&mut String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref mut c) => Some(&mut *c.error), ++ Repr::Custom(ref mut c) => Some(&mut c.error), + } + } + +@@ -463,8 +422,7 @@ impl Error { + /// print_error(Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn into_inner(self) -> Option> { ++ pub fn into_inner(self) -> Option { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +@@ -490,10 +448,9 @@ impl Error { + /// print_error(Error::new(ErrorKind::AddrInUse, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn kind(&self) -> ErrorKind { + match self.repr { +- Repr::Os(code) => sys::decode_error_kind(code), ++ Repr::Os(_code) => ErrorKind::Other, + Repr::Custom(ref c) => c.kind, + Repr::Simple(kind) => kind, + } +@@ -504,21 +461,18 @@ impl fmt::Debug for Repr { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match *self { + Repr::Os(ref code) => +- fmt.debug_struct("Os").field("code", code) +- .field("message", &sys::os::error_string(*code)).finish(), ++ fmt.debug_struct("Os").field("code", code).finish(), + Repr::Custom(ref c) => fmt.debug_tuple("Custom").field(c).finish(), + Repr::Simple(kind) => fmt.debug_tuple("Kind").field(&kind).finish(), + } + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for Error { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match self.repr { + Repr::Os(code) => { +- let detail = sys::os::error_string(code); +- write!(fmt, "{} (os error {})", detail, code) ++ write!(fmt, "os error {}", code) + } + Repr::Custom(ref c) => c.error.fmt(fmt), + Repr::Simple(kind) => write!(fmt, "{}", kind.as_str()), +@@ -526,24 +480,6 @@ impl fmt::Display for Error { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for Error { +- fn description(&self) -> &str { +- match self.repr { +- Repr::Os(..) | Repr::Simple(..) => self.kind().as_str(), +- Repr::Custom(ref c) => c.error.description(), +- } +- } +- +- fn cause(&self) -> Option<&error::Error> { +- match self.repr { +- Repr::Os(..) => None, +- Repr::Simple(..) => None, +- Repr::Custom(ref c) => c.error.cause(), +- } +- } +-} +- + fn _assert_error_is_sync_send() { + fn _is_sync_send() {} + _is_sync_send::(); +diff --git a/impls.rs b/impls.rs +index f691289..c4374d3 100644 +--- a/impls.rs ++++ b/impls.rs +@@ -8,26 +8,31 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use cmp; +-use io::{self, SeekFrom, Read, Write, Seek, BufRead, Error, ErrorKind}; +-use fmt; +-use mem; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++use core::cmp; ++use io::{self, SeekFrom, Read, Write, Seek, Error, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; ++use core::fmt; ++use core::mem; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(feature="collections")] use collections::vec::Vec; + + // ============================================================================= + // Forwarding implementations + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, R: Read + ?Sized> Read for &'a mut R { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -38,7 +43,6 @@ impl<'a, R: Read + ?Sized> Read for &'a mut R { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, W: Write + ?Sized> Write for &'a mut W { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -56,12 +60,11 @@ impl<'a, W: Write + ?Sized> Write for &'a mut W { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, S: Seek + ?Sized> Seek for &'a mut S { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -80,18 +83,20 @@ impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Read for Box { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -102,7 +107,7 @@ impl Read for Box { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Write for Box { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -120,12 +125,12 @@ impl Write for Box { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Seek for Box { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Box { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -151,7 +156,6 @@ impl BufRead for Box { + /// + /// Note that reading updates the slice to point to the yet unread part. + /// The slice will be empty when EOF is reached. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Read for &'a [u8] { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { +@@ -193,7 +197,7 @@ impl<'a> Read for &'a [u8] { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a> BufRead for &'a [u8] { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(*self) } +@@ -207,7 +211,6 @@ impl<'a> BufRead for &'a [u8] { + /// + /// Note that writing updates the slice to point to the yet unwritten part. + /// The slice will be empty when it has been completely overwritten. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for &'a mut [u8] { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -233,7 +236,7 @@ impl<'a> Write for &'a mut [u8] { + + /// Write is implemented for `Vec` by appending to the vector. + /// The vector will grow as needed. +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Write for Vec { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { +diff --git a/memchr.rs b/memchr.rs +index 3824a5f..312cf47 100644 +--- a/memchr.rs ++++ b/memchr.rs +@@ -11,10 +11,12 @@ + // Original implementation taken from rust-memchr + // Copyright 2015 Andrew Gallant, bluss and Nicolas Koch + ++pub use self::fallback::{memchr,memrchr}; ++ + #[allow(dead_code)] + pub mod fallback { +- use cmp; +- use mem; ++ use core::cmp; ++ use core::mem; + + const LO_U64: u64 = 0x0101010101010101; + const HI_U64: u64 = 0x8080808080808080; +diff --git a/mod.rs b/mod.rs +index 8cb7b2b..1879347 100644 +--- a/mod.rs ++++ b/mod.rs +@@ -253,44 +253,34 @@ + //! [`?` operator]: ../../book/syntax-index.html + //! [`read()`]: trait.Read.html#tymethod.read + +-#![stable(feature = "rust1", since = "1.0.0")] +- +-use cmp; ++use core::cmp; + use std_unicode::str as core_str; +-use error as std_error; +-use fmt; +-use result; +-use str; +-use memchr; +- +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::{BufReader, BufWriter, LineWriter}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::IntoInnerError; +-#[stable(feature = "rust1", since = "1.0.0")] ++use core::fmt; ++use core::iter::{Iterator}; ++use core::marker::Sized; ++#[cfg(feature="collections")] use core::ops::{Drop, FnOnce}; ++use core::option::Option::{self, Some, None}; ++use core::result::Result::{Ok, Err}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++use core::str; ++#[cfg(feature="collections")] use collections::vec::Vec; ++mod memchr; ++ ++#[cfg(feature="collections")] pub use self::buffered::{BufReader, BufWriter, LineWriter}; ++#[cfg(feature="collections")] pub use self::buffered::IntoInnerError; + pub use self::cursor::Cursor; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::error::{Result, Error, ErrorKind}; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::util::{copy, sink, Sink, empty, Empty, repeat, Repeat}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{stdin, stdout, stderr, _print, Stdin, Stdout, Stderr}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{StdoutLock, StderrLock, StdinLock}; +-#[unstable(feature = "libstd_io_internals", issue = "0")] +-#[doc(no_inline, hidden)] +-pub use self::stdio::{set_panic, set_print}; + + pub mod prelude; +-mod buffered; ++#[cfg(feature="collections")] mod buffered; + mod cursor; + mod error; + mod impls; +-mod lazy; + mod util; +-mod stdio; + +-const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; ++const DEFAULT_BUF_SIZE: usize = 8 * 1024; + + // A few methods below (read_to_string, read_line) will append data into a + // `String` buffer, but we need to be pretty careful when doing this. The +@@ -310,6 +300,7 @@ const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; + // 2. We're passing a raw buffer to the function `f`, and it is expected that + // the function only *appends* bytes to the buffer. We'll get undefined + // behavior if existing bytes are overwritten to have non-UTF-8 data. ++#[cfg(feature="collections")] + fn append_to_string(buf: &mut String, f: F) -> Result + where F: FnOnce(&mut Vec) -> Result + { +@@ -341,6 +332,7 @@ fn append_to_string(buf: &mut String, f: F) -> Result + // of data to return. Simply tacking on an extra DEFAULT_BUF_SIZE space every + // time is 4,500 times (!) slower than this if the reader has a very small + // amount of data to return. ++#[cfg(feature="collections")] + fn read_to_end(r: &mut R, buf: &mut Vec) -> Result { + let start_len = buf.len(); + let mut len = start_len; +@@ -423,7 +415,6 @@ fn read_to_end(r: &mut R, buf: &mut Vec) -> Result + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Read { + /// Pull some bytes from this source into the specified buffer, returning + /// how many bytes were read. +@@ -473,7 +464,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read(&mut self, buf: &mut [u8]) -> Result; + + /// Read all bytes until EOF in this source, placing them into `buf`. +@@ -515,7 +505,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_end(&mut self, buf: &mut Vec) -> Result { + read_to_end(self, buf) + } +@@ -553,7 +543,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_string(&mut self, buf: &mut String) -> Result { + // Note that we do *not* call `.read_to_end()` here. We are passing + // `&mut Vec` (the raw contents of `buf`) into the `read_to_end` +@@ -614,7 +604,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "read_exact", since = "1.6.0")] + fn read_exact(&mut self, mut buf: &mut [u8]) -> Result<()> { + while !buf.is_empty() { + match self.read(buf) { +@@ -666,7 +655,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + + /// Transforms this `Read` instance to an `Iterator` over its bytes. +@@ -696,7 +684,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn bytes(self) -> Bytes where Self: Sized { + Bytes { inner: self } + } +@@ -733,10 +720,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[unstable(feature = "io", reason = "the semantics of a partial read/write \ +- of where errors happen is currently \ +- unclear and may change", +- issue = "27802")] + fn chars(self) -> Chars where Self: Sized { + Chars { inner: self } + } +@@ -771,7 +754,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn chain(self, next: R) -> Chain where Self: Sized { + Chain { first: self, second: next, done_first: false } + } +@@ -805,7 +787,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn take(self, limit: u64) -> Take where Self: Sized { + Take { inner: self, limit: limit } + } +@@ -845,7 +826,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Write { + /// Write a buffer into this object, returning how many bytes were written. + /// +@@ -885,7 +865,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write(&mut self, buf: &[u8]) -> Result; + + /// Flush this output stream, ensuring that all intermediately buffered +@@ -911,7 +890,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn flush(&mut self) -> Result<()>; + + /// Attempts to write an entire buffer into this write. +@@ -938,7 +916,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_all(&mut self, mut buf: &[u8]) -> Result<()> { + while !buf.is_empty() { + match self.write(buf) { +@@ -990,7 +967,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_fmt(&mut self, fmt: fmt::Arguments) -> Result<()> { + // Create a shim which translates a Write to a fmt::Write and saves + // off I/O errors. instead of discarding them +@@ -1046,7 +1022,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + } + +@@ -1076,7 +1051,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Seek { + /// Seek to an offset, in bytes, in a stream. + /// +@@ -1092,7 +1066,6 @@ pub trait Seek { + /// Seeking to a negative offset is considered an error. + /// + /// [`SeekFrom::Start`]: enum.SeekFrom.html#variant.Start +- #[stable(feature = "rust1", since = "1.0.0")] + fn seek(&mut self, pos: SeekFrom) -> Result; + } + +@@ -1102,29 +1075,26 @@ pub trait Seek { + /// + /// [`Seek`]: trait.Seek.html + #[derive(Copy, PartialEq, Eq, Clone, Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub enum SeekFrom { + /// Set the offset to the provided number of bytes. +- #[stable(feature = "rust1", since = "1.0.0")] +- Start(#[stable(feature = "rust1", since = "1.0.0")] u64), ++ Start(u64), + + /// Set the offset to the size of this object plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- End(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ End(i64), + + /// Set the offset to the current position plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- Current(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ Current(i64), + } + ++#[cfg(feature="collections")] + fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + -> Result { + let mut read = 0; +@@ -1204,7 +1174,7 @@ fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + /// # } + /// ``` + /// +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub trait BufRead: Read { + /// Fills the internal buffer of this object, returning the buffer contents. + /// +@@ -1249,7 +1219,6 @@ pub trait BufRead: Read { + /// // ensure the bytes we worked with aren't returned again later + /// stdin.consume(length); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn fill_buf(&mut self) -> Result<&[u8]>; + + /// Tells this buffer that `amt` bytes have been consumed from the buffer, +@@ -1271,7 +1240,6 @@ pub trait BufRead: Read { + /// that method's example includes an example of `consume()`. + /// + /// [`fill_buf()`]: #tymethod.fill_buf +- #[stable(feature = "rust1", since = "1.0.0")] + fn consume(&mut self, amt: usize); + + /// Read all bytes into `buf` until the delimiter `byte` or EOF is reached. +@@ -1313,7 +1281,6 @@ pub trait BufRead: Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_until(&mut self, byte: u8, buf: &mut Vec) -> Result { + read_until(self, byte, buf) + } +@@ -1360,7 +1327,6 @@ pub trait BufRead: Read { + /// buffer.clear(); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_line(&mut self, buf: &mut String) -> Result { + // Note that we are not calling the `.read_until` method here, but + // rather our hardcoded implementation. For more details as to why, see +@@ -1397,7 +1363,6 @@ pub trait BufRead: Read { + /// println!("{:?}", content.unwrap()); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn split(self, byte: u8) -> Split where Self: Sized { + Split { buf: self, delim: byte } + } +@@ -1431,7 +1396,6 @@ pub trait BufRead: Read { + /// Each line of the iterator has the same error semantics as [`BufRead::read_line()`]. + /// + /// [`BufRead::read_line()`]: trait.BufRead.html#method.read_line +- #[stable(feature = "rust1", since = "1.0.0")] + fn lines(self) -> Lines where Self: Sized { + Lines { buf: self } + } +@@ -1443,14 +1407,12 @@ pub trait BufRead: Read { + /// Please see the documentation of [`chain()`] for more details. + /// + /// [`chain()`]: trait.Read.html#method.chain +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Chain { + first: T, + second: U, + done_first: bool, + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Chain { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.debug_struct("Chain") +@@ -1460,7 +1422,6 @@ impl fmt::Debug for Chain { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Chain { + fn read(&mut self, buf: &mut [u8]) -> Result { + if !self.done_first { +@@ -1473,7 +1434,7 @@ impl Read for Chain { + } + } + +-#[stable(feature = "chain_bufread", since = "1.9.0")] ++#[cfg(feature="collections")] + impl BufRead for Chain { + fn fill_buf(&mut self) -> Result<&[u8]> { + if !self.done_first { +@@ -1500,7 +1461,6 @@ impl BufRead for Chain { + /// Please see the documentation of [`take()`] for more details. + /// + /// [`take()`]: trait.Read.html#method.take +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Debug)] + pub struct Take { + inner: T, +@@ -1535,7 +1495,6 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn limit(&self) -> u64 { self.limit } + + /// Consumes the `Take`, returning the wrapped reader. +@@ -1558,13 +1517,11 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "io_take_into_inner", since = "1.15.0")] + pub fn into_inner(self) -> T { + self.inner + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Take { + fn read(&mut self, buf: &mut [u8]) -> Result { + // Don't call into inner reader at all at EOF because it may still block +@@ -1579,7 +1536,7 @@ impl Read for Take { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Take { + fn fill_buf(&mut self) -> Result<&[u8]> { + // Don't call into inner reader at all at EOF because it may still block +@@ -1618,13 +1575,11 @@ fn read_one_byte(reader: &mut Read) -> Option> { + /// Please see the documentation of [`bytes()`] for more details. + /// + /// [`bytes()`]: trait.Read.html#method.bytes +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Debug)] + pub struct Bytes { + inner: R, + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Iterator for Bytes { + type Item = Result; + +@@ -1639,8 +1594,6 @@ impl Iterator for Bytes { + /// Please see the documentation of `chars()` for more details. + /// + /// [chars]: trait.Read.html#method.chars +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + #[derive(Debug)] + pub struct Chars { + inner: R, +@@ -1649,8 +1602,6 @@ pub struct Chars { + /// An enumeration of possible errors that can be generated from the `Chars` + /// adapter. + #[derive(Debug)] +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + pub enum CharsError { + /// Variant representing that the underlying stream was read successfully + /// but it did not contain valid utf8 data. +@@ -1660,8 +1611,6 @@ pub enum CharsError { + Other(Error), + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl Iterator for Chars { + type Item = result::Result; + +@@ -1693,25 +1642,6 @@ impl Iterator for Chars { + } + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] +-impl std_error::Error for CharsError { +- fn description(&self) -> &str { +- match *self { +- CharsError::NotUtf8 => "invalid utf8 encoding", +- CharsError::Other(ref e) => std_error::Error::description(e), +- } +- } +- fn cause(&self) -> Option<&std_error::Error> { +- match *self { +- CharsError::NotUtf8 => None, +- CharsError::Other(ref e) => e.cause(), +- } +- } +-} +- +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl fmt::Display for CharsError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + match *self { +@@ -1730,14 +1660,14 @@ impl fmt::Display for CharsError { + /// `BufRead`. Please see the documentation of `split()` for more details. + /// + /// [split]: trait.BufRead.html#method.split +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + #[derive(Debug)] + pub struct Split { + buf: B, + delim: u8, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Split { + type Item = Result>; + +@@ -1762,13 +1692,13 @@ impl Iterator for Split { + /// `BufRead`. Please see the documentation of `lines()` for more details. + /// + /// [lines]: trait.BufRead.html#method.lines +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + #[derive(Debug)] + pub struct Lines { + buf: B, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Lines { + type Item = Result; + +diff --git a/prelude.rs b/prelude.rs +index 8772d0f..49d66c9 100644 +--- a/prelude.rs ++++ b/prelude.rs +@@ -18,7 +18,8 @@ + //! use std::io::prelude::*; + //! ``` + +-#![stable(feature = "rust1", since = "1.0.0")] ++pub use super::{Read, Write, Seek}; ++#[cfg(feature="collections")] pub use super::BufRead; + +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use super::{Read, Write, BufRead, Seek}; ++#[cfg(feature="collections")] pub use alloc::boxed::Box; ++#[cfg(feature="collections")] pub use collections::vec::Vec; +diff --git a/util.rs b/util.rs +index 4163187..dd64d72 100644 +--- a/util.rs ++++ b/util.rs +@@ -10,8 +10,9 @@ + + #![allow(missing_copy_implementations)] + +-use fmt; +-use io::{self, Read, Write, ErrorKind, BufRead}; ++use core::fmt; ++use io::{self, Read, Write, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; + + /// Copies the entire contents of a reader into a writer. + /// +@@ -43,7 +44,6 @@ use io::{self, Read, Write, ErrorKind, BufRead}; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn copy(reader: &mut R, writer: &mut W) -> io::Result + where R: Read, W: Write + { +@@ -67,7 +67,6 @@ pub fn copy(reader: &mut R, writer: &mut W) -> io::Result< + /// the documentation of `empty()` for more details. + /// + /// [empty]: fn.empty.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Empty { _priv: () } + + /// Constructs a new handle to an empty reader. +@@ -85,20 +84,18 @@ pub struct Empty { _priv: () } + /// io::empty().read_to_string(&mut buffer).unwrap(); + /// assert!(buffer.is_empty()); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn empty() -> Empty { Empty { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Empty { + fn read(&mut self, _buf: &mut [u8]) -> io::Result { Ok(0) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++ ++#[cfg(feature="collections")] + impl BufRead for Empty { + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(&[]) } + fn consume(&mut self, _n: usize) {} + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Empty { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Empty { .. }") +@@ -111,7 +108,6 @@ impl fmt::Debug for Empty { + /// see the documentation of `repeat()` for more details. + /// + /// [repeat]: fn.repeat.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Repeat { byte: u8 } + + /// Creates an instance of a reader that infinitely repeats one byte. +@@ -128,10 +124,8 @@ pub struct Repeat { byte: u8 } + /// io::repeat(0b101).read_exact(&mut buffer).unwrap(); + /// assert_eq!(buffer, [0b101, 0b101, 0b101]); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn repeat(byte: u8) -> Repeat { Repeat { byte: byte } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Repeat { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + for slot in &mut *buf { +@@ -141,7 +135,6 @@ impl Read for Repeat { + } + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Repeat { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Repeat { .. }") +@@ -154,7 +147,6 @@ impl fmt::Debug for Repeat { + /// see the documentation of `sink()` for more details. + /// + /// [sink]: fn.sink.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Sink { _priv: () } + + /// Creates an instance of a writer which will successfully consume all data. +@@ -171,16 +163,13 @@ pub struct Sink { _priv: () } + /// let num_bytes = io::sink().write(&buffer).unwrap(); + /// assert_eq!(num_bytes, 5); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn sink() -> Sink { Sink { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for Sink { + fn write(&mut self, buf: &[u8]) -> io::Result { Ok(buf.len()) } + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Sink { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Sink { .. }") diff --git a/patches/b4be4758361bf1b03410a523e8672b1c1fa7d385.patch b/patches/b4be4758361bf1b03410a523e8672b1c1fa7d385.patch new file mode 100644 index 0000000..92d8d51 --- /dev/null +++ b/patches/b4be4758361bf1b03410a523e8672b1c1fa7d385.patch @@ -0,0 +1,1510 @@ +diff --git a/buffered.rs b/buffered.rs +index 3b82412..0566d0f 100644 +--- a/buffered.rs ++++ b/buffered.rs +@@ -10,13 +10,13 @@ + + //! Buffering wrappers for I/O traits + ++use core::prelude::v1::*; + use io::prelude::*; + +-use cmp; +-use error; +-use fmt; ++use core::cmp; ++use core::fmt; + use io::{self, DEFAULT_BUF_SIZE, Error, ErrorKind, SeekFrom}; +-use memchr; ++use io::memchr; + + /// The `BufReader` struct adds buffering to any reader. + /// +@@ -46,7 +46,6 @@ use memchr; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufReader { + inner: R, + buf: Box<[u8]>, +@@ -69,7 +68,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: R) -> BufReader { + BufReader::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -90,7 +88,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: R) -> BufReader { + BufReader { + inner: inner, +@@ -118,7 +115,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &R { &self.inner } + + /// Gets a mutable reference to the underlying reader. +@@ -139,7 +135,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut R { &mut self.inner } + + /// Unwraps this `BufReader`, returning the underlying reader. +@@ -160,11 +155,9 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> R { self.inner } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for BufReader { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + // If we don't have any buffered data and we're doing a massive read +@@ -182,7 +175,6 @@ impl Read for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl BufRead for BufReader { + fn fill_buf(&mut self) -> io::Result<&[u8]> { + // If we've reached the end of our internal buffer then we need to fetch +@@ -202,7 +194,6 @@ impl BufRead for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufReader where R: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufReader") +@@ -212,7 +203,6 @@ impl fmt::Debug for BufReader where R: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufReader { + /// Seek to an offset, in bytes, in the underlying reader. + /// +@@ -306,7 +296,6 @@ impl Seek for BufReader { + /// [`Write`]: ../../std/io/trait.Write.html + /// [`Tcpstream::write`]: ../../std/net/struct.TcpStream.html#method.write + /// [`TcpStream`]: ../../std/net/struct.TcpStream.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufWriter { + inner: Option, + buf: Vec, +@@ -341,7 +330,6 @@ pub struct BufWriter { + /// }; + /// ``` + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct IntoInnerError(W, Error); + + impl BufWriter { +@@ -355,7 +343,6 @@ impl BufWriter { + /// + /// let mut buffer = BufWriter::new(TcpStream::connect("127.0.0.1:34254").unwrap()); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> BufWriter { + BufWriter::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -373,7 +360,6 @@ impl BufWriter { + /// let stream = TcpStream::connect("127.0.0.1:34254").unwrap(); + /// let mut buffer = BufWriter::with_capacity(100, stream); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> BufWriter { + BufWriter { + inner: Some(inner), +@@ -422,7 +408,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.as_ref().unwrap() } + + /// Gets a mutable reference to the underlying writer. +@@ -440,7 +425,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.as_mut().unwrap() } + + /// Unwraps this `BufWriter`, returning the underlying writer. +@@ -458,7 +442,6 @@ impl BufWriter { + /// // unwrap the TcpStream and flush the buffer + /// let stream = buffer.into_inner().unwrap(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(mut self) -> Result>> { + match self.flush_buf() { + Err(e) => Err(IntoInnerError(self, e)), +@@ -467,7 +450,6 @@ impl BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for BufWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.buf.len() + buf.len() > self.buf.capacity() { +@@ -487,7 +469,6 @@ impl Write for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufWriter") +@@ -497,7 +478,6 @@ impl fmt::Debug for BufWriter where W: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufWriter { + /// Seek to the offset, in bytes, in the underlying writer. + /// +@@ -507,7 +487,6 @@ impl Seek for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Drop for BufWriter { + fn drop(&mut self) { + if self.inner.is_some() && !self.panicked { +@@ -546,7 +525,6 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn error(&self) -> &Error { &self.1 } + + /// Returns the buffered writer instance which generated the error. +@@ -579,23 +557,13 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> W { self.0 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl From> for Error { + fn from(iie: IntoInnerError) -> Error { iie.1 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for IntoInnerError { +- fn description(&self) -> &str { +- error::Error::description(self.error()) +- } +-} +- +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for IntoInnerError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.error().fmt(f) +@@ -650,7 +618,6 @@ impl fmt::Display for IntoInnerError { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct LineWriter { + inner: BufWriter, + need_flush: bool, +@@ -671,7 +638,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> LineWriter { + // Lines typically aren't that long, don't use a giant buffer + LineWriter::with_capacity(1024, inner) +@@ -692,7 +658,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> LineWriter { + LineWriter { + inner: BufWriter::with_capacity(cap, inner), +@@ -716,7 +681,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.get_ref() } + + /// Gets a mutable reference to the underlying writer. +@@ -739,7 +703,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.get_mut() } + + /// Unwraps this `LineWriter`, returning the underlying writer. +@@ -761,7 +724,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> Result>> { + self.inner.into_inner().map_err(|IntoInnerError(buf, e)| { + IntoInnerError(LineWriter { +@@ -772,7 +734,6 @@ impl LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for LineWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.need_flush { +@@ -817,7 +778,6 @@ impl Write for LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for LineWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("LineWriter") +diff --git a/cursor.rs b/cursor.rs +index 53347eb..637f4e0 100644 +--- a/cursor.rs ++++ b/cursor.rs +@@ -8,10 +8,11 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + ++use core::prelude::v1::*; + use io::prelude::*; + +-use core::convert::TryInto; +-use cmp; ++#[cfg(feature = "collections")] use core::convert::TryInto; ++use core::cmp; + use io::{self, SeekFrom, Error, ErrorKind}; + + /// A `Cursor` wraps another type and provides it with a +@@ -79,7 +80,6 @@ use io::{self, SeekFrom, Error, ErrorKind}; + /// assert_eq!(&buff.get_ref()[5..15], &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]); + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Clone, Debug)] + pub struct Cursor { + inner: T, +@@ -102,7 +102,6 @@ impl Cursor { + /// # fn force_inference(_: &Cursor>) {} + /// # force_inference(&buff); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: T) -> Cursor { + Cursor { pos: 0, inner: inner } + } +@@ -120,7 +119,6 @@ impl Cursor { + /// + /// let vec = buff.into_inner(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> T { self.inner } + + /// Gets a reference to the underlying value in this cursor. +@@ -136,7 +134,6 @@ impl Cursor { + /// + /// let reference = buff.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &T { &self.inner } + + /// Gets a mutable reference to the underlying value in this cursor. +@@ -155,7 +152,6 @@ impl Cursor { + /// + /// let reference = buff.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut T { &mut self.inner } + + /// Returns the current position of this cursor. +@@ -177,7 +173,6 @@ impl Cursor { + /// buff.seek(SeekFrom::Current(-1)).unwrap(); + /// assert_eq!(buff.position(), 1); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn position(&self) -> u64 { self.pos } + + /// Sets the position of this cursor. +@@ -197,11 +192,9 @@ impl Cursor { + /// buff.set_position(4); + /// assert_eq!(buff.position(), 4); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn set_position(&mut self, pos: u64) { self.pos = pos; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl io::Seek for Cursor where T: AsRef<[u8]> { + fn seek(&mut self, style: SeekFrom) -> io::Result { + let (base_pos, offset) = match style { +@@ -222,25 +215,27 @@ impl io::Seek for Cursor where T: AsRef<[u8]> { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Cursor where T: AsRef<[u8]> { + fn read(&mut self, buf: &mut [u8]) -> io::Result { +- let n = Read::read(&mut self.fill_buf()?, buf)?; ++ let n = Read::read(&mut self.get_buf()?, buf)?; + self.pos += n as u64; + Ok(n) + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl BufRead for Cursor where T: AsRef<[u8]> { +- fn fill_buf(&mut self) -> io::Result<&[u8]> { ++impl Cursor where T: AsRef<[u8]> { ++ fn get_buf(&mut self) -> io::Result<&[u8]> { + let amt = cmp::min(self.pos, self.inner.as_ref().len() as u64); + Ok(&self.inner.as_ref()[(amt as usize)..]) + } ++} ++ ++#[cfg(feature = "collections")] ++impl BufRead for Cursor where T: AsRef<[u8]> { ++ fn fill_buf(&mut self) -> io::Result<&[u8]> { self.get_buf() } + fn consume(&mut self, amt: usize) { self.pos += amt as u64; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for Cursor<&'a mut [u8]> { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -252,7 +247,7 @@ impl<'a> Write for Cursor<&'a mut [u8]> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature = "collections")] + impl Write for Cursor> { + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos: usize = self.position().try_into().map_err(|_| { +@@ -282,8 +277,8 @@ impl Write for Cursor> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "cursor_box_slice", since = "1.5.0")] +-impl Write for Cursor> { ++#[cfg(feature = "alloc")] ++impl Write for Cursor<::alloc::boxed::Box<[u8]>> { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos = cmp::min(self.pos, self.inner.len() as u64); +diff --git a/error.rs b/error.rs +index fb67eaf..1c9f15e 100644 +--- a/error.rs ++++ b/error.rs +@@ -8,11 +8,16 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use error; +-use fmt; +-use result; +-use sys; +-use convert::From; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++#[cfg(not(feature="alloc"))] use ::FakeBox as Box; ++use core::convert::Into; ++use core::fmt; ++use core::marker::{Send, Sync}; ++use core::option::Option::{self, Some, None}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(not(feature="collections"))] use ::ErrorString as String; ++use core::convert::From; + + /// A specialized [`Result`](../result/enum.Result.html) type for I/O + /// operations. +@@ -44,7 +49,6 @@ use convert::From; + /// Ok(buffer) + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub type Result = result::Result; + + /// The error type for I/O operations of the `Read`, `Write`, `Seek`, and +@@ -56,7 +60,6 @@ pub type Result = result::Result; + /// + /// [`ErrorKind`]: enum.ErrorKind.html + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Error { + repr: Repr, + } +@@ -64,13 +67,16 @@ pub struct Error { + enum Repr { + Os(i32), + Simple(ErrorKind), ++ #[cfg(feature="alloc")] + Custom(Box), ++ #[cfg(not(feature="alloc"))] ++ Custom(Custom), + } + + #[derive(Debug)] + struct Custom { + kind: ErrorKind, +- error: Box, ++ error: String, + } + + /// A list specifying general categories of I/O error. +@@ -82,47 +88,34 @@ struct Custom { + /// + /// [`io::Error`]: struct.Error.html + #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)] +-#[stable(feature = "rust1", since = "1.0.0")] + #[allow(deprecated)] + pub enum ErrorKind { + /// An entity was not found, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + NotFound, + /// The operation lacked the necessary privileges to complete. +- #[stable(feature = "rust1", since = "1.0.0")] + PermissionDenied, + /// The connection was refused by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionRefused, + /// The connection was reset by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionReset, + /// The connection was aborted (terminated) by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionAborted, + /// The network operation failed because it was not connected yet. +- #[stable(feature = "rust1", since = "1.0.0")] + NotConnected, + /// A socket address could not be bound because the address is already in + /// use elsewhere. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrInUse, + /// A nonexistent interface was requested or the requested address was not + /// local. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrNotAvailable, + /// The operation failed because a pipe was closed. +- #[stable(feature = "rust1", since = "1.0.0")] + BrokenPipe, + /// An entity already exists, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + AlreadyExists, + /// The operation needs to block to complete, but the blocking operation was + /// requested to not occur. +- #[stable(feature = "rust1", since = "1.0.0")] + WouldBlock, + /// A parameter was incorrect. +- #[stable(feature = "rust1", since = "1.0.0")] + InvalidInput, + /// Data not valid for the operation were encountered. + /// +@@ -134,10 +127,8 @@ pub enum ErrorKind { + /// `InvalidData` if the file's contents are not valid UTF-8. + /// + /// [`InvalidInput`]: #variant.InvalidInput +- #[stable(feature = "io_invalid_data", since = "1.2.0")] + InvalidData, + /// The I/O operation's timeout expired, causing it to be canceled. +- #[stable(feature = "rust1", since = "1.0.0")] + TimedOut, + /// An error returned when an operation could not be completed because a + /// call to [`write`] returned [`Ok(0)`]. +@@ -148,15 +139,12 @@ pub enum ErrorKind { + /// + /// [`write`]: ../../std/io/trait.Write.html#tymethod.write + /// [`Ok(0)`]: ../../std/io/type.Result.html +- #[stable(feature = "rust1", since = "1.0.0")] + WriteZero, + /// This operation was interrupted. + /// + /// Interrupted operations can typically be retried. +- #[stable(feature = "rust1", since = "1.0.0")] + Interrupted, + /// Any I/O error not part of this list. +- #[stable(feature = "rust1", since = "1.0.0")] + Other, + + /// An error returned when an operation could not be completed because an +@@ -165,15 +153,10 @@ pub enum ErrorKind { + /// This typically means that an operation could only succeed if it read a + /// particular number of bytes but only a smaller number of bytes could be + /// read. +- #[stable(feature = "read_exact", since = "1.6.0")] + UnexpectedEof, + + /// A marker variant that tells the compiler that users of this enum cannot + /// match it exhaustively. +- #[unstable(feature = "io_error_internals", +- reason = "better expressed through extensible enums that this \ +- enum cannot be exhaustively matched against", +- issue = "0")] + #[doc(hidden)] + __Nonexhaustive, + } +@@ -206,7 +189,6 @@ impl ErrorKind { + + /// Intended for use for errors not exposed to the user, where allocating onto + /// the heap (for normal construction via Error::new) is too costly. +-#[stable(feature = "io_error_from_errorkind", since = "1.14.0")] + impl From for Error { + fn from(kind: ErrorKind) -> Error { + Error { +@@ -234,14 +216,13 @@ impl Error { + /// // errors can also be created from other errors + /// let custom_error2 = Error::new(ErrorKind::Interrupted, custom_error); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(kind: ErrorKind, error: E) -> Error +- where E: Into> ++ where E: Into + { + Self::_new(kind, error.into()) + } + +- fn _new(kind: ErrorKind, error: Box) -> Error { ++ fn _new(kind: ErrorKind, error: String) -> Error { + Error { + repr: Repr::Custom(Box::new(Custom { + kind: kind, +@@ -250,24 +231,6 @@ impl Error { + } + } + +- /// Returns an error representing the last OS error which occurred. +- /// +- /// This function reads the value of `errno` for the target platform (e.g. +- /// `GetLastError` on Windows) and will return a corresponding instance of +- /// `Error` for the error code. +- /// +- /// # Examples +- /// +- /// ``` +- /// use std::io::Error; +- /// +- /// println!("last OS error: {:?}", Error::last_os_error()); +- /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] +- pub fn last_os_error() -> Error { +- Error::from_raw_os_error(sys::os::errno() as i32) +- } +- + /// Creates a new instance of an `Error` from a particular OS error code. + /// + /// # Examples +@@ -293,7 +256,6 @@ impl Error { + /// assert_eq!(error.kind(), io::ErrorKind::AddrInUse); + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn from_raw_os_error(code: i32) -> Error { + Error { repr: Repr::Os(code) } + } +@@ -324,7 +286,6 @@ impl Error { + /// print_os_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn raw_os_error(&self) -> Option { + match self.repr { + Repr::Os(i) => Some(i), +@@ -358,12 +319,11 @@ impl Error { + /// print_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_ref(&self) -> Option<&(error::Error+Send+Sync+'static)> { ++ pub fn get_ref(&self) -> Option<&String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref c) => Some(&*c.error), ++ Repr::Custom(ref c) => Some(&c.error), + } + } + +@@ -429,12 +389,11 @@ impl Error { + /// print_error(&change_error(Error::new(ErrorKind::Other, MyError::new()))); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_mut(&mut self) -> Option<&mut (error::Error+Send+Sync+'static)> { ++ pub fn get_mut(&mut self) -> Option<&mut String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref mut c) => Some(&mut *c.error), ++ Repr::Custom(ref mut c) => Some(&mut c.error), + } + } + +@@ -463,8 +422,7 @@ impl Error { + /// print_error(Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn into_inner(self) -> Option> { ++ pub fn into_inner(self) -> Option { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +@@ -490,10 +448,9 @@ impl Error { + /// print_error(Error::new(ErrorKind::AddrInUse, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn kind(&self) -> ErrorKind { + match self.repr { +- Repr::Os(code) => sys::decode_error_kind(code), ++ Repr::Os(_code) => ErrorKind::Other, + Repr::Custom(ref c) => c.kind, + Repr::Simple(kind) => kind, + } +@@ -504,21 +461,18 @@ impl fmt::Debug for Repr { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match *self { + Repr::Os(ref code) => +- fmt.debug_struct("Os").field("code", code) +- .field("message", &sys::os::error_string(*code)).finish(), ++ fmt.debug_struct("Os").field("code", code).finish(), + Repr::Custom(ref c) => fmt.debug_tuple("Custom").field(c).finish(), + Repr::Simple(kind) => fmt.debug_tuple("Kind").field(&kind).finish(), + } + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for Error { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match self.repr { + Repr::Os(code) => { +- let detail = sys::os::error_string(code); +- write!(fmt, "{} (os error {})", detail, code) ++ write!(fmt, "os error {}", code) + } + Repr::Custom(ref c) => c.error.fmt(fmt), + Repr::Simple(kind) => write!(fmt, "{}", kind.as_str()), +@@ -526,24 +480,6 @@ impl fmt::Display for Error { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for Error { +- fn description(&self) -> &str { +- match self.repr { +- Repr::Os(..) | Repr::Simple(..) => self.kind().as_str(), +- Repr::Custom(ref c) => c.error.description(), +- } +- } +- +- fn cause(&self) -> Option<&error::Error> { +- match self.repr { +- Repr::Os(..) => None, +- Repr::Simple(..) => None, +- Repr::Custom(ref c) => c.error.cause(), +- } +- } +-} +- + fn _assert_error_is_sync_send() { + fn _is_sync_send() {} + _is_sync_send::(); +diff --git a/impls.rs b/impls.rs +index f691289..c4374d3 100644 +--- a/impls.rs ++++ b/impls.rs +@@ -8,26 +8,31 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use cmp; +-use io::{self, SeekFrom, Read, Write, Seek, BufRead, Error, ErrorKind}; +-use fmt; +-use mem; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++use core::cmp; ++use io::{self, SeekFrom, Read, Write, Seek, Error, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; ++use core::fmt; ++use core::mem; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(feature="collections")] use collections::vec::Vec; + + // ============================================================================= + // Forwarding implementations + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, R: Read + ?Sized> Read for &'a mut R { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -38,7 +43,6 @@ impl<'a, R: Read + ?Sized> Read for &'a mut R { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, W: Write + ?Sized> Write for &'a mut W { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -56,12 +60,11 @@ impl<'a, W: Write + ?Sized> Write for &'a mut W { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, S: Seek + ?Sized> Seek for &'a mut S { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -80,18 +83,20 @@ impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Read for Box { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -102,7 +107,7 @@ impl Read for Box { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Write for Box { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -120,12 +125,12 @@ impl Write for Box { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Seek for Box { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Box { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -151,7 +156,6 @@ impl BufRead for Box { + /// + /// Note that reading updates the slice to point to the yet unread part. + /// The slice will be empty when EOF is reached. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Read for &'a [u8] { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { +@@ -193,7 +197,7 @@ impl<'a> Read for &'a [u8] { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a> BufRead for &'a [u8] { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(*self) } +@@ -207,7 +211,6 @@ impl<'a> BufRead for &'a [u8] { + /// + /// Note that writing updates the slice to point to the yet unwritten part. + /// The slice will be empty when it has been completely overwritten. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for &'a mut [u8] { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -233,7 +236,7 @@ impl<'a> Write for &'a mut [u8] { + + /// Write is implemented for `Vec` by appending to the vector. + /// The vector will grow as needed. +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Write for Vec { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { +diff --git a/memchr.rs b/memchr.rs +index 3824a5f..312cf47 100644 +--- a/memchr.rs ++++ b/memchr.rs +@@ -11,10 +11,12 @@ + // Original implementation taken from rust-memchr + // Copyright 2015 Andrew Gallant, bluss and Nicolas Koch + ++pub use self::fallback::{memchr,memrchr}; ++ + #[allow(dead_code)] + pub mod fallback { +- use cmp; +- use mem; ++ use core::cmp; ++ use core::mem; + + const LO_U64: u64 = 0x0101010101010101; + const HI_U64: u64 = 0x8080808080808080; +diff --git a/mod.rs b/mod.rs +index cd096c1..64fcf76 100644 +--- a/mod.rs ++++ b/mod.rs +@@ -266,44 +266,34 @@ + //! [`?` operator]: ../../book/syntax-index.html + //! [`Read::read`]: trait.Read.html#tymethod.read + +-#![stable(feature = "rust1", since = "1.0.0")] +- +-use cmp; ++use core::cmp; + use core::str as core_str; +-use error as std_error; +-use fmt; +-use result; +-use str; +-use memchr; +- +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::{BufReader, BufWriter, LineWriter}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::IntoInnerError; +-#[stable(feature = "rust1", since = "1.0.0")] ++use core::fmt; ++use core::iter::{Iterator}; ++use core::marker::Sized; ++#[cfg(feature="collections")] use core::ops::{Drop, FnOnce}; ++use core::option::Option::{self, Some, None}; ++use core::result::Result::{Ok, Err}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++use core::str; ++#[cfg(feature="collections")] use collections::vec::Vec; ++mod memchr; ++ ++#[cfg(feature="collections")] pub use self::buffered::{BufReader, BufWriter, LineWriter}; ++#[cfg(feature="collections")] pub use self::buffered::IntoInnerError; + pub use self::cursor::Cursor; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::error::{Result, Error, ErrorKind}; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::util::{copy, sink, Sink, empty, Empty, repeat, Repeat}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{stdin, stdout, stderr, _print, Stdin, Stdout, Stderr}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{StdoutLock, StderrLock, StdinLock}; +-#[unstable(feature = "libstd_io_internals", issue = "0")] +-#[doc(no_inline, hidden)] +-pub use self::stdio::{set_panic, set_print}; + + pub mod prelude; +-mod buffered; ++#[cfg(feature="collections")] mod buffered; + mod cursor; + mod error; + mod impls; +-mod lazy; + mod util; +-mod stdio; + +-const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; ++const DEFAULT_BUF_SIZE: usize = 8 * 1024; + + // A few methods below (read_to_string, read_line) will append data into a + // `String` buffer, but we need to be pretty careful when doing this. The +@@ -323,6 +313,7 @@ const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; + // 2. We're passing a raw buffer to the function `f`, and it is expected that + // the function only *appends* bytes to the buffer. We'll get undefined + // behavior if existing bytes are overwritten to have non-UTF-8 data. ++#[cfg(feature="collections")] + fn append_to_string(buf: &mut String, f: F) -> Result + where F: FnOnce(&mut Vec) -> Result + { +@@ -354,6 +345,7 @@ fn append_to_string(buf: &mut String, f: F) -> Result + // of data to return. Simply tacking on an extra DEFAULT_BUF_SIZE space every + // time is 4,500 times (!) slower than this if the reader has a very small + // amount of data to return. ++#[cfg(feature="collections")] + fn read_to_end(r: &mut R, buf: &mut Vec) -> Result { + let start_len = buf.len(); + let mut len = start_len; +@@ -436,7 +428,6 @@ fn read_to_end(r: &mut R, buf: &mut Vec) -> Result + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Read { + /// Pull some bytes from this source into the specified buffer, returning + /// how many bytes were read. +@@ -486,7 +477,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read(&mut self, buf: &mut [u8]) -> Result; + + /// Read all bytes until EOF in this source, placing them into `buf`. +@@ -528,7 +518,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_end(&mut self, buf: &mut Vec) -> Result { + read_to_end(self, buf) + } +@@ -566,7 +556,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_string(&mut self, buf: &mut String) -> Result { + // Note that we do *not* call `.read_to_end()` here. We are passing + // `&mut Vec` (the raw contents of `buf`) into the `read_to_end` +@@ -627,7 +617,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "read_exact", since = "1.6.0")] + fn read_exact(&mut self, mut buf: &mut [u8]) -> Result<()> { + while !buf.is_empty() { + match self.read(buf) { +@@ -679,7 +668,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + + /// Transforms this `Read` instance to an `Iterator` over its bytes. +@@ -709,7 +697,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn bytes(self) -> Bytes where Self: Sized { + Bytes { inner: self } + } +@@ -746,10 +733,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[unstable(feature = "io", reason = "the semantics of a partial read/write \ +- of where errors happen is currently \ +- unclear and may change", +- issue = "27802")] + fn chars(self) -> Chars where Self: Sized { + Chars { inner: self } + } +@@ -784,7 +767,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn chain(self, next: R) -> Chain where Self: Sized { + Chain { first: self, second: next, done_first: false } + } +@@ -818,7 +800,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn take(self, limit: u64) -> Take where Self: Sized { + Take { inner: self, limit: limit } + } +@@ -858,7 +839,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Write { + /// Write a buffer into this object, returning how many bytes were written. + /// +@@ -898,7 +878,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write(&mut self, buf: &[u8]) -> Result; + + /// Flush this output stream, ensuring that all intermediately buffered +@@ -924,7 +903,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn flush(&mut self) -> Result<()>; + + /// Attempts to write an entire buffer into this write. +@@ -951,7 +929,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_all(&mut self, mut buf: &[u8]) -> Result<()> { + while !buf.is_empty() { + match self.write(buf) { +@@ -1003,7 +980,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_fmt(&mut self, fmt: fmt::Arguments) -> Result<()> { + // Create a shim which translates a Write to a fmt::Write and saves + // off I/O errors. instead of discarding them +@@ -1059,7 +1035,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + } + +@@ -1089,7 +1064,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Seek { + /// Seek to an offset, in bytes, in a stream. + /// +@@ -1105,7 +1079,6 @@ pub trait Seek { + /// Seeking to a negative offset is considered an error. + /// + /// [`SeekFrom::Start`]: enum.SeekFrom.html#variant.Start +- #[stable(feature = "rust1", since = "1.0.0")] + fn seek(&mut self, pos: SeekFrom) -> Result; + } + +@@ -1115,29 +1088,26 @@ pub trait Seek { + /// + /// [`Seek`]: trait.Seek.html + #[derive(Copy, PartialEq, Eq, Clone, Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub enum SeekFrom { + /// Set the offset to the provided number of bytes. +- #[stable(feature = "rust1", since = "1.0.0")] +- Start(#[stable(feature = "rust1", since = "1.0.0")] u64), ++ Start(u64), + + /// Set the offset to the size of this object plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- End(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ End(i64), + + /// Set the offset to the current position plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- Current(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ Current(i64), + } + ++#[cfg(feature="collections")] + fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + -> Result { + let mut read = 0; +@@ -1217,7 +1187,7 @@ fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + /// # } + /// ``` + /// +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub trait BufRead: Read { + /// Fills the internal buffer of this object, returning the buffer contents. + /// +@@ -1262,7 +1232,6 @@ pub trait BufRead: Read { + /// // ensure the bytes we worked with aren't returned again later + /// stdin.consume(length); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn fill_buf(&mut self) -> Result<&[u8]>; + + /// Tells this buffer that `amt` bytes have been consumed from the buffer, +@@ -1284,7 +1253,6 @@ pub trait BufRead: Read { + /// that method's example includes an example of `consume()`. + /// + /// [`fill_buf`]: #tymethod.fill_buf +- #[stable(feature = "rust1", since = "1.0.0")] + fn consume(&mut self, amt: usize); + + /// Read all bytes into `buf` until the delimiter `byte` or EOF is reached. +@@ -1340,7 +1308,6 @@ pub trait BufRead: Read { + /// assert_eq!(num_bytes, 0); + /// assert_eq!(buf, b""); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_until(&mut self, byte: u8, buf: &mut Vec) -> Result { + read_until(self, byte, buf) + } +@@ -1395,7 +1362,6 @@ pub trait BufRead: Read { + /// assert_eq!(num_bytes, 0); + /// assert_eq!(buf, ""); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_line(&mut self, buf: &mut String) -> Result { + // Note that we are not calling the `.read_until` method here, but + // rather our hardcoded implementation. For more details as to why, see +@@ -1436,7 +1402,6 @@ pub trait BufRead: Read { + /// assert_eq!(split_iter.next(), Some(b"dolor".to_vec())); + /// assert_eq!(split_iter.next(), None); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn split(self, byte: u8) -> Split where Self: Sized { + Split { buf: self, delim: byte } + } +@@ -1475,7 +1440,6 @@ pub trait BufRead: Read { + /// Each line of the iterator has the same error semantics as [`BufRead::read_line`]. + /// + /// [`BufRead::read_line`]: trait.BufRead.html#method.read_line +- #[stable(feature = "rust1", since = "1.0.0")] + fn lines(self) -> Lines where Self: Sized { + Lines { buf: self } + } +@@ -1487,14 +1451,12 @@ pub trait BufRead: Read { + /// Please see the documentation of [`chain`] for more details. + /// + /// [`chain`]: trait.Read.html#method.chain +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Chain { + first: T, + second: U, + done_first: bool, + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Chain { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.debug_struct("Chain") +@@ -1504,7 +1466,6 @@ impl fmt::Debug for Chain { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Chain { + fn read(&mut self, buf: &mut [u8]) -> Result { + if !self.done_first { +@@ -1517,7 +1478,7 @@ impl Read for Chain { + } + } + +-#[stable(feature = "chain_bufread", since = "1.9.0")] ++#[cfg(feature="collections")] + impl BufRead for Chain { + fn fill_buf(&mut self) -> Result<&[u8]> { + if !self.done_first { +@@ -1544,7 +1505,6 @@ impl BufRead for Chain { + /// Please see the documentation of [`take`] for more details. + /// + /// [`take`]: trait.Read.html#method.take +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Debug)] + pub struct Take { + inner: T, +@@ -1579,7 +1539,6 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn limit(&self) -> u64 { self.limit } + + /// Consumes the `Take`, returning the wrapped reader. +@@ -1602,13 +1561,11 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "io_take_into_inner", since = "1.15.0")] + pub fn into_inner(self) -> T { + self.inner + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Take { + fn read(&mut self, buf: &mut [u8]) -> Result { + // Don't call into inner reader at all at EOF because it may still block +@@ -1623,7 +1580,7 @@ impl Read for Take { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Take { + fn fill_buf(&mut self) -> Result<&[u8]> { + // Don't call into inner reader at all at EOF because it may still block +@@ -1662,13 +1619,11 @@ fn read_one_byte(reader: &mut Read) -> Option> { + /// Please see the documentation of [`bytes`] for more details. + /// + /// [`bytes`]: trait.Read.html#method.bytes +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Debug)] + pub struct Bytes { + inner: R, + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Iterator for Bytes { + type Item = Result; + +@@ -1683,8 +1638,6 @@ impl Iterator for Bytes { + /// Please see the documentation of `chars()` for more details. + /// + /// [chars]: trait.Read.html#method.chars +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + #[derive(Debug)] + pub struct Chars { + inner: R, +@@ -1693,8 +1646,6 @@ pub struct Chars { + /// An enumeration of possible errors that can be generated from the `Chars` + /// adapter. + #[derive(Debug)] +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + pub enum CharsError { + /// Variant representing that the underlying stream was read successfully + /// but it did not contain valid utf8 data. +@@ -1704,8 +1655,6 @@ pub enum CharsError { + Other(Error), + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl Iterator for Chars { + type Item = result::Result; + +@@ -1737,25 +1686,6 @@ impl Iterator for Chars { + } + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] +-impl std_error::Error for CharsError { +- fn description(&self) -> &str { +- match *self { +- CharsError::NotUtf8 => "invalid utf8 encoding", +- CharsError::Other(ref e) => std_error::Error::description(e), +- } +- } +- fn cause(&self) -> Option<&std_error::Error> { +- match *self { +- CharsError::NotUtf8 => None, +- CharsError::Other(ref e) => e.cause(), +- } +- } +-} +- +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl fmt::Display for CharsError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + match *self { +@@ -1774,14 +1704,14 @@ impl fmt::Display for CharsError { + /// `BufRead`. Please see the documentation of `split()` for more details. + /// + /// [split]: trait.BufRead.html#method.split +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + #[derive(Debug)] + pub struct Split { + buf: B, + delim: u8, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Split { + type Item = Result>; + +@@ -1806,13 +1736,13 @@ impl Iterator for Split { + /// `BufRead`. Please see the documentation of `lines()` for more details. + /// + /// [lines]: trait.BufRead.html#method.lines +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + #[derive(Debug)] + pub struct Lines { + buf: B, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Lines { + type Item = Result; + +diff --git a/prelude.rs b/prelude.rs +index 8772d0f..49d66c9 100644 +--- a/prelude.rs ++++ b/prelude.rs +@@ -18,7 +18,8 @@ + //! use std::io::prelude::*; + //! ``` + +-#![stable(feature = "rust1", since = "1.0.0")] ++pub use super::{Read, Write, Seek}; ++#[cfg(feature="collections")] pub use super::BufRead; + +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use super::{Read, Write, BufRead, Seek}; ++#[cfg(feature="collections")] pub use alloc::boxed::Box; ++#[cfg(feature="collections")] pub use collections::vec::Vec; +diff --git a/util.rs b/util.rs +index 078f1ad..fd13c98 100644 +--- a/util.rs ++++ b/util.rs +@@ -10,8 +10,9 @@ + + #![allow(missing_copy_implementations)] + +-use fmt; +-use io::{self, Read, Write, ErrorKind, BufRead}; ++use core::fmt; ++use io::{self, Read, Write, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; + + /// Copies the entire contents of a reader into a writer. + /// +@@ -43,7 +44,6 @@ use io::{self, Read, Write, ErrorKind, BufRead}; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn copy(reader: &mut R, writer: &mut W) -> io::Result + where R: Read, W: Write + { +@@ -67,7 +67,6 @@ pub fn copy(reader: &mut R, writer: &mut W) -> io::Result< + /// the documentation of `empty()` for more details. + /// + /// [empty]: fn.empty.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Empty { _priv: () } + + /// Constructs a new handle to an empty reader. +@@ -85,20 +84,18 @@ pub struct Empty { _priv: () } + /// io::empty().read_to_string(&mut buffer).unwrap(); + /// assert!(buffer.is_empty()); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn empty() -> Empty { Empty { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Empty { + fn read(&mut self, _buf: &mut [u8]) -> io::Result { Ok(0) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++ ++#[cfg(feature="collections")] + impl BufRead for Empty { + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(&[]) } + fn consume(&mut self, _n: usize) {} + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Empty { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Empty { .. }") +@@ -111,7 +108,6 @@ impl fmt::Debug for Empty { + /// see the documentation of `repeat()` for more details. + /// + /// [repeat]: fn.repeat.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Repeat { byte: u8 } + + /// Creates an instance of a reader that infinitely repeats one byte. +@@ -128,10 +124,8 @@ pub struct Repeat { byte: u8 } + /// io::repeat(0b101).read_exact(&mut buffer).unwrap(); + /// assert_eq!(buffer, [0b101, 0b101, 0b101]); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn repeat(byte: u8) -> Repeat { Repeat { byte: byte } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Repeat { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + for slot in &mut *buf { +@@ -141,7 +135,6 @@ impl Read for Repeat { + } + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Repeat { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Repeat { .. }") +@@ -154,7 +147,6 @@ impl fmt::Debug for Repeat { + /// see the documentation of `sink()` for more details. + /// + /// [sink]: fn.sink.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Sink { _priv: () } + + /// Creates an instance of a writer which will successfully consume all data. +@@ -171,16 +163,13 @@ pub struct Sink { _priv: () } + /// let num_bytes = io::sink().write(&buffer).unwrap(); + /// assert_eq!(num_bytes, 5); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn sink() -> Sink { Sink { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for Sink { + fn write(&mut self, buf: &[u8]) -> io::Result { Ok(buf.len()) } + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Sink { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Sink { .. }") diff --git a/patches/d2bc30b03fa4bf5425d080710f681f36f58f1706.patch b/patches/d2bc30b03fa4bf5425d080710f681f36f58f1706.patch new file mode 100644 index 0000000..50ae54d --- /dev/null +++ b/patches/d2bc30b03fa4bf5425d080710f681f36f58f1706.patch @@ -0,0 +1,1476 @@ +diff --git a/buffered.rs b/buffered.rs +index 44dd4e9..20ab840 100644 +--- a/buffered.rs ++++ b/buffered.rs +@@ -10,13 +10,13 @@ + + //! Buffering wrappers for I/O traits + ++use core::prelude::v1::*; + use io::prelude::*; + +-use cmp; +-use error; +-use fmt; ++use core::cmp; ++use core::fmt; + use io::{self, DEFAULT_BUF_SIZE, Error, ErrorKind, SeekFrom}; +-use memchr; ++use io::memchr; + + /// The `BufReader` struct adds buffering to any reader. + /// +@@ -46,7 +46,6 @@ use memchr; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufReader { + inner: R, + buf: Box<[u8]>, +@@ -69,7 +68,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: R) -> BufReader { + BufReader::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -90,7 +88,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: R) -> BufReader { + BufReader { + inner: inner, +@@ -118,7 +115,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &R { &self.inner } + + /// Gets a mutable reference to the underlying reader. +@@ -139,7 +135,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut R { &mut self.inner } + + /// Unwraps this `BufReader`, returning the underlying reader. +@@ -160,11 +155,9 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> R { self.inner } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for BufReader { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + // If we don't have any buffered data and we're doing a massive read +@@ -182,7 +175,6 @@ impl Read for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl BufRead for BufReader { + fn fill_buf(&mut self) -> io::Result<&[u8]> { + // If we've reached the end of our internal buffer then we need to fetch +@@ -199,7 +191,6 @@ impl BufRead for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufReader where R: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufReader") +@@ -209,7 +200,6 @@ impl fmt::Debug for BufReader where R: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufReader { + /// Seek to an offset, in bytes, in the underlying reader. + /// +@@ -302,7 +292,6 @@ impl Seek for BufReader { + /// [`Write`]: ../../std/io/trait.Write.html + /// [`write`]: ../../std/net/struct.TcpStream.html#method.write + /// [`TcpStream`]: ../../std/net/struct.TcpStream.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufWriter { + inner: Option, + buf: Vec, +@@ -337,7 +326,6 @@ pub struct BufWriter { + /// }; + /// ``` + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct IntoInnerError(W, Error); + + impl BufWriter { +@@ -351,7 +339,6 @@ impl BufWriter { + /// + /// let mut buffer = BufWriter::new(TcpStream::connect("127.0.0.1:34254").unwrap()); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> BufWriter { + BufWriter::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -369,7 +356,6 @@ impl BufWriter { + /// let stream = TcpStream::connect("127.0.0.1:34254").unwrap(); + /// let mut buffer = BufWriter::with_capacity(100, stream); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> BufWriter { + BufWriter { + inner: Some(inner), +@@ -418,7 +404,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.as_ref().unwrap() } + + /// Gets a mutable reference to the underlying writer. +@@ -436,7 +421,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.as_mut().unwrap() } + + /// Unwraps this `BufWriter`, returning the underlying writer. +@@ -454,7 +438,6 @@ impl BufWriter { + /// // unwrap the TcpStream and flush the buffer + /// let stream = buffer.into_inner().unwrap(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(mut self) -> Result>> { + match self.flush_buf() { + Err(e) => Err(IntoInnerError(self, e)), +@@ -463,7 +446,6 @@ impl BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for BufWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.buf.len() + buf.len() > self.buf.capacity() { +@@ -483,7 +465,6 @@ impl Write for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufWriter") +@@ -493,7 +474,6 @@ impl fmt::Debug for BufWriter where W: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufWriter { + /// Seek to the offset, in bytes, in the underlying writer. + /// +@@ -503,7 +483,6 @@ impl Seek for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Drop for BufWriter { + fn drop(&mut self) { + if self.inner.is_some() && !self.panicked { +@@ -542,7 +521,6 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn error(&self) -> &Error { &self.1 } + + /// Returns the buffered writer instance which generated the error. +@@ -575,23 +553,13 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> W { self.0 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl From> for Error { + fn from(iie: IntoInnerError) -> Error { iie.1 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for IntoInnerError { +- fn description(&self) -> &str { +- error::Error::description(self.error()) +- } +-} +- +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for IntoInnerError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.error().fmt(f) +@@ -646,7 +614,6 @@ impl fmt::Display for IntoInnerError { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct LineWriter { + inner: BufWriter, + } +@@ -666,7 +633,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> LineWriter { + // Lines typically aren't that long, don't use a giant buffer + LineWriter::with_capacity(1024, inner) +@@ -687,7 +653,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> LineWriter { + LineWriter { inner: BufWriter::with_capacity(cap, inner) } + } +@@ -708,7 +673,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.get_ref() } + + /// Gets a mutable reference to the underlying writer. +@@ -731,7 +695,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.get_mut() } + + /// Unwraps this `LineWriter`, returning the underlying writer. +@@ -753,7 +716,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> Result>> { + self.inner.into_inner().map_err(|IntoInnerError(buf, e)| { + IntoInnerError(LineWriter { inner: buf }, e) +@@ -761,7 +723,6 @@ impl LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for LineWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + match memchr::memrchr(b'\n', buf) { +@@ -780,7 +741,6 @@ impl Write for LineWriter { + fn flush(&mut self) -> io::Result<()> { self.inner.flush() } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for LineWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("LineWriter") +diff --git a/cursor.rs b/cursor.rs +index 1b50233..6a7b44f 100644 +--- a/cursor.rs ++++ b/cursor.rs +@@ -8,10 +8,11 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + ++use core::prelude::v1::*; + use io::prelude::*; + +-use core::convert::TryInto; +-use cmp; ++#[cfg(feature = "collections")] use core::convert::TryInto; ++use core::cmp; + use io::{self, SeekFrom, Error, ErrorKind}; + + /// A `Cursor` wraps another type and provides it with a +@@ -79,7 +80,6 @@ use io::{self, SeekFrom, Error, ErrorKind}; + /// assert_eq!(&buff.get_ref()[5..15], &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]); + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Clone, Debug)] + pub struct Cursor { + inner: T, +@@ -98,7 +98,6 @@ impl Cursor { + /// # fn force_inference(_: &Cursor>) {} + /// # force_inference(&buff); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: T) -> Cursor { + Cursor { pos: 0, inner: inner } + } +@@ -116,7 +115,6 @@ impl Cursor { + /// + /// let vec = buff.into_inner(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> T { self.inner } + + /// Gets a reference to the underlying value in this cursor. +@@ -132,7 +130,6 @@ impl Cursor { + /// + /// let reference = buff.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &T { &self.inner } + + /// Gets a mutable reference to the underlying value in this cursor. +@@ -151,7 +148,6 @@ impl Cursor { + /// + /// let reference = buff.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut T { &mut self.inner } + + /// Returns the current position of this cursor. +@@ -173,7 +169,6 @@ impl Cursor { + /// buff.seek(SeekFrom::Current(-1)).unwrap(); + /// assert_eq!(buff.position(), 1); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn position(&self) -> u64 { self.pos } + + /// Sets the position of this cursor. +@@ -193,11 +188,9 @@ impl Cursor { + /// buff.set_position(4); + /// assert_eq!(buff.position(), 4); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn set_position(&mut self, pos: u64) { self.pos = pos; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl io::Seek for Cursor where T: AsRef<[u8]> { + fn seek(&mut self, style: SeekFrom) -> io::Result { + let pos = match style { +@@ -216,25 +209,27 @@ impl io::Seek for Cursor where T: AsRef<[u8]> { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Cursor where T: AsRef<[u8]> { + fn read(&mut self, buf: &mut [u8]) -> io::Result { +- let n = Read::read(&mut self.fill_buf()?, buf)?; ++ let n = Read::read(&mut self.get_buf()?, buf)?; + self.pos += n as u64; + Ok(n) + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl BufRead for Cursor where T: AsRef<[u8]> { +- fn fill_buf(&mut self) -> io::Result<&[u8]> { ++impl Cursor where T: AsRef<[u8]> { ++ fn get_buf(&mut self) -> io::Result<&[u8]> { + let amt = cmp::min(self.pos, self.inner.as_ref().len() as u64); + Ok(&self.inner.as_ref()[(amt as usize)..]) + } ++} ++ ++#[cfg(feature = "collections")] ++impl BufRead for Cursor where T: AsRef<[u8]> { ++ fn fill_buf(&mut self) -> io::Result<&[u8]> { self.get_buf() } + fn consume(&mut self, amt: usize) { self.pos += amt as u64; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for Cursor<&'a mut [u8]> { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -246,7 +241,7 @@ impl<'a> Write for Cursor<&'a mut [u8]> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature = "collections")] + impl Write for Cursor> { + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos: usize = self.position().try_into().map_err(|_| { +@@ -276,8 +271,8 @@ impl Write for Cursor> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "cursor_box_slice", since = "1.5.0")] +-impl Write for Cursor> { ++#[cfg(feature = "alloc")] ++impl Write for Cursor<::alloc::boxed::Box<[u8]>> { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos = cmp::min(self.pos, self.inner.len() as u64); +diff --git a/error.rs b/error.rs +index 659c8aa..f8d983a 100644 +--- a/error.rs ++++ b/error.rs +@@ -8,11 +8,16 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use error; +-use fmt; +-use result; +-use sys; +-use convert::From; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++#[cfg(not(feature="alloc"))] use ::FakeBox as Box; ++use core::convert::Into; ++use core::fmt; ++use core::marker::{Send, Sync}; ++use core::option::Option::{self, Some, None}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(not(feature="collections"))] use ::ErrorString as String; ++use core::convert::From; + + /// A specialized [`Result`](../result/enum.Result.html) type for I/O + /// operations. +@@ -44,7 +49,6 @@ use convert::From; + /// Ok(buffer) + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub type Result = result::Result; + + /// The error type for I/O operations of the `Read`, `Write`, `Seek`, and +@@ -56,7 +60,6 @@ pub type Result = result::Result; + /// + /// [`ErrorKind`]: enum.ErrorKind.html + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Error { + repr: Repr, + } +@@ -64,13 +67,16 @@ pub struct Error { + enum Repr { + Os(i32), + Simple(ErrorKind), ++ #[cfg(feature="alloc")] + Custom(Box), ++ #[cfg(not(feature="alloc"))] ++ Custom(Custom), + } + + #[derive(Debug)] + struct Custom { + kind: ErrorKind, +- error: Box, ++ error: String, + } + + /// A list specifying general categories of I/O error. +@@ -82,47 +88,34 @@ struct Custom { + /// + /// [`io::Error`]: struct.Error.html + #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)] +-#[stable(feature = "rust1", since = "1.0.0")] + #[allow(deprecated)] + pub enum ErrorKind { + /// An entity was not found, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + NotFound, + /// The operation lacked the necessary privileges to complete. +- #[stable(feature = "rust1", since = "1.0.0")] + PermissionDenied, + /// The connection was refused by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionRefused, + /// The connection was reset by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionReset, + /// The connection was aborted (terminated) by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionAborted, + /// The network operation failed because it was not connected yet. +- #[stable(feature = "rust1", since = "1.0.0")] + NotConnected, + /// A socket address could not be bound because the address is already in + /// use elsewhere. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrInUse, + /// A nonexistent interface was requested or the requested address was not + /// local. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrNotAvailable, + /// The operation failed because a pipe was closed. +- #[stable(feature = "rust1", since = "1.0.0")] + BrokenPipe, + /// An entity already exists, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + AlreadyExists, + /// The operation needs to block to complete, but the blocking operation was + /// requested to not occur. +- #[stable(feature = "rust1", since = "1.0.0")] + WouldBlock, + /// A parameter was incorrect. +- #[stable(feature = "rust1", since = "1.0.0")] + InvalidInput, + /// Data not valid for the operation were encountered. + /// +@@ -132,10 +125,8 @@ pub enum ErrorKind { + /// + /// For example, a function that reads a file into a string will error with + /// `InvalidData` if the file's contents are not valid UTF-8. +- #[stable(feature = "io_invalid_data", since = "1.2.0")] + InvalidData, + /// The I/O operation's timeout expired, causing it to be canceled. +- #[stable(feature = "rust1", since = "1.0.0")] + TimedOut, + /// An error returned when an operation could not be completed because a + /// call to `write` returned `Ok(0)`. +@@ -143,15 +134,12 @@ pub enum ErrorKind { + /// This typically means that an operation could only succeed if it wrote a + /// particular number of bytes but only a smaller number of bytes could be + /// written. +- #[stable(feature = "rust1", since = "1.0.0")] + WriteZero, + /// This operation was interrupted. + /// + /// Interrupted operations can typically be retried. +- #[stable(feature = "rust1", since = "1.0.0")] + Interrupted, + /// Any I/O error not part of this list. +- #[stable(feature = "rust1", since = "1.0.0")] + Other, + + /// An error returned when an operation could not be completed because an +@@ -160,15 +148,10 @@ pub enum ErrorKind { + /// This typically means that an operation could only succeed if it read a + /// particular number of bytes but only a smaller number of bytes could be + /// read. +- #[stable(feature = "read_exact", since = "1.6.0")] + UnexpectedEof, + + /// A marker variant that tells the compiler that users of this enum cannot + /// match it exhaustively. +- #[unstable(feature = "io_error_internals", +- reason = "better expressed through extensible enums that this \ +- enum cannot be exhaustively matched against", +- issue = "0")] + #[doc(hidden)] + __Nonexhaustive, + } +@@ -201,7 +184,6 @@ impl ErrorKind { + + /// Intended for use for errors not exposed to the user, where allocating onto + /// the heap (for normal construction via Error::new) is too costly. +-#[stable(feature = "io_error_from_errorkind", since = "1.14.0")] + impl From for Error { + fn from(kind: ErrorKind) -> Error { + Error { +@@ -229,14 +211,13 @@ impl Error { + /// // errors can also be created from other errors + /// let custom_error2 = Error::new(ErrorKind::Interrupted, custom_error); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(kind: ErrorKind, error: E) -> Error +- where E: Into> ++ where E: Into + { + Self::_new(kind, error.into()) + } + +- fn _new(kind: ErrorKind, error: Box) -> Error { ++ fn _new(kind: ErrorKind, error: String) -> Error { + Error { + repr: Repr::Custom(Box::new(Custom { + kind: kind, +@@ -245,24 +226,6 @@ impl Error { + } + } + +- /// Returns an error representing the last OS error which occurred. +- /// +- /// This function reads the value of `errno` for the target platform (e.g. +- /// `GetLastError` on Windows) and will return a corresponding instance of +- /// `Error` for the error code. +- /// +- /// # Examples +- /// +- /// ``` +- /// use std::io::Error; +- /// +- /// println!("last OS error: {:?}", Error::last_os_error()); +- /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] +- pub fn last_os_error() -> Error { +- Error::from_raw_os_error(sys::os::errno() as i32) +- } +- + /// Creates a new instance of an `Error` from a particular OS error code. + /// + /// # Examples +@@ -288,7 +251,6 @@ impl Error { + /// assert_eq!(error.kind(), io::ErrorKind::AddrInUse); + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn from_raw_os_error(code: i32) -> Error { + Error { repr: Repr::Os(code) } + } +@@ -319,7 +281,6 @@ impl Error { + /// print_os_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn raw_os_error(&self) -> Option { + match self.repr { + Repr::Os(i) => Some(i), +@@ -353,12 +314,11 @@ impl Error { + /// print_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_ref(&self) -> Option<&(error::Error+Send+Sync+'static)> { ++ pub fn get_ref(&self) -> Option<&String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref c) => Some(&*c.error), ++ Repr::Custom(ref c) => Some(&c.error), + } + } + +@@ -424,12 +384,11 @@ impl Error { + /// print_error(&change_error(Error::new(ErrorKind::Other, MyError::new()))); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_mut(&mut self) -> Option<&mut (error::Error+Send+Sync+'static)> { ++ pub fn get_mut(&mut self) -> Option<&mut String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref mut c) => Some(&mut *c.error), ++ Repr::Custom(ref mut c) => Some(&mut c.error), + } + } + +@@ -458,8 +417,7 @@ impl Error { + /// print_error(Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn into_inner(self) -> Option> { ++ pub fn into_inner(self) -> Option { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +@@ -485,10 +443,9 @@ impl Error { + /// print_error(Error::new(ErrorKind::AddrInUse, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn kind(&self) -> ErrorKind { + match self.repr { +- Repr::Os(code) => sys::decode_error_kind(code), ++ Repr::Os(_code) => ErrorKind::Other, + Repr::Custom(ref c) => c.kind, + Repr::Simple(kind) => kind, + } +@@ -499,21 +456,18 @@ impl fmt::Debug for Repr { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match *self { + Repr::Os(ref code) => +- fmt.debug_struct("Os").field("code", code) +- .field("message", &sys::os::error_string(*code)).finish(), ++ fmt.debug_struct("Os").field("code", code).finish(), + Repr::Custom(ref c) => fmt.debug_tuple("Custom").field(c).finish(), + Repr::Simple(kind) => fmt.debug_tuple("Kind").field(&kind).finish(), + } + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for Error { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match self.repr { + Repr::Os(code) => { +- let detail = sys::os::error_string(code); +- write!(fmt, "{} (os error {})", detail, code) ++ write!(fmt, "os error {}", code) + } + Repr::Custom(ref c) => c.error.fmt(fmt), + Repr::Simple(kind) => write!(fmt, "{}", kind.as_str()), +@@ -521,24 +475,6 @@ impl fmt::Display for Error { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for Error { +- fn description(&self) -> &str { +- match self.repr { +- Repr::Os(..) | Repr::Simple(..) => self.kind().as_str(), +- Repr::Custom(ref c) => c.error.description(), +- } +- } +- +- fn cause(&self) -> Option<&error::Error> { +- match self.repr { +- Repr::Os(..) => None, +- Repr::Simple(..) => None, +- Repr::Custom(ref c) => c.error.cause(), +- } +- } +-} +- + fn _assert_error_is_sync_send() { + fn _is_sync_send() {} + _is_sync_send::(); +diff --git a/impls.rs b/impls.rs +index 6b26c01..0ba399b 100644 +--- a/impls.rs ++++ b/impls.rs +@@ -8,26 +8,31 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use cmp; +-use io::{self, SeekFrom, Read, Write, Seek, BufRead, Error, ErrorKind}; +-use fmt; +-use mem; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++use core::cmp; ++use io::{self, SeekFrom, Read, Write, Seek, Error, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; ++use core::fmt; ++use core::mem; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(feature="collections")] use collections::vec::Vec; + + // ============================================================================= + // Forwarding implementations + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, R: Read + ?Sized> Read for &'a mut R { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -38,7 +43,6 @@ impl<'a, R: Read + ?Sized> Read for &'a mut R { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, W: Write + ?Sized> Write for &'a mut W { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -56,12 +60,11 @@ impl<'a, W: Write + ?Sized> Write for &'a mut W { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, S: Seek + ?Sized> Seek for &'a mut S { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -80,18 +83,20 @@ impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Read for Box { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -102,7 +107,7 @@ impl Read for Box { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Write for Box { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -120,12 +125,12 @@ impl Write for Box { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Seek for Box { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Box { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -151,7 +156,6 @@ impl BufRead for Box { + /// + /// Note that reading updates the slice to point to the yet unread part. + /// The slice will be empty when EOF is reached. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Read for &'a [u8] { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { +@@ -175,7 +179,7 @@ impl<'a> Read for &'a [u8] { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a> BufRead for &'a [u8] { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(*self) } +@@ -189,7 +193,6 @@ impl<'a> BufRead for &'a [u8] { + /// + /// Note that writing updates the slice to point to the yet unwritten part. + /// The slice will be empty when it has been completely overwritten. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for &'a mut [u8] { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -215,7 +218,7 @@ impl<'a> Write for &'a mut [u8] { + + /// Write is implemented for `Vec` by appending to the vector. + /// The vector will grow as needed. +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Write for Vec { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { +diff --git a/memchr.rs b/memchr.rs +index 3824a5f..312cf47 100644 +--- a/memchr.rs ++++ b/memchr.rs +@@ -11,10 +11,12 @@ + // Original implementation taken from rust-memchr + // Copyright 2015 Andrew Gallant, bluss and Nicolas Koch + ++pub use self::fallback::{memchr,memrchr}; ++ + #[allow(dead_code)] + pub mod fallback { +- use cmp; +- use mem; ++ use core::cmp; ++ use core::mem; + + const LO_U64: u64 = 0x0101010101010101; + const HI_U64: u64 = 0x8080808080808080; +diff --git a/mod.rs b/mod.rs +index 193f396..7232bd1 100644 +--- a/mod.rs ++++ b/mod.rs +@@ -252,44 +252,34 @@ + //! [`io::Result`]: type.Result.html + //! [`try!`]: ../macro.try.html + +-#![stable(feature = "rust1", since = "1.0.0")] +- +-use cmp; ++use core::cmp; + use rustc_unicode::str as core_str; +-use error as std_error; +-use fmt; +-use result; +-use str; +-use memchr; +- +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::{BufReader, BufWriter, LineWriter}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::IntoInnerError; +-#[stable(feature = "rust1", since = "1.0.0")] ++use core::fmt; ++use core::iter::{Iterator}; ++use core::marker::Sized; ++#[cfg(feature="collections")] use core::ops::{Drop, FnOnce}; ++use core::option::Option::{self, Some, None}; ++use core::result::Result::{Ok, Err}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++use core::str; ++#[cfg(feature="collections")] use collections::vec::Vec; ++mod memchr; ++ ++#[cfg(feature="collections")] pub use self::buffered::{BufReader, BufWriter, LineWriter}; ++#[cfg(feature="collections")] pub use self::buffered::IntoInnerError; + pub use self::cursor::Cursor; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::error::{Result, Error, ErrorKind}; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::util::{copy, sink, Sink, empty, Empty, repeat, Repeat}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{stdin, stdout, stderr, _print, Stdin, Stdout, Stderr}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{StdoutLock, StderrLock, StdinLock}; +-#[unstable(feature = "libstd_io_internals", issue = "0")] +-#[doc(no_inline, hidden)] +-pub use self::stdio::{set_panic, set_print}; + + pub mod prelude; +-mod buffered; ++#[cfg(feature="collections")] mod buffered; + mod cursor; + mod error; + mod impls; +-mod lazy; + mod util; +-mod stdio; + +-const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; ++const DEFAULT_BUF_SIZE: usize = 8 * 1024; + + // A few methods below (read_to_string, read_line) will append data into a + // `String` buffer, but we need to be pretty careful when doing this. The +@@ -309,6 +299,7 @@ const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; + // 2. We're passing a raw buffer to the function `f`, and it is expected that + // the function only *appends* bytes to the buffer. We'll get undefined + // behavior if existing bytes are overwritten to have non-UTF-8 data. ++#[cfg(feature="collections")] + fn append_to_string(buf: &mut String, f: F) -> Result + where F: FnOnce(&mut Vec) -> Result + { +@@ -340,6 +331,7 @@ fn append_to_string(buf: &mut String, f: F) -> Result + // of data to return. Simply tacking on an extra DEFAULT_BUF_SIZE space every + // time is 4,500 times (!) slower than this if the reader has a very small + // amount of data to return. ++#[cfg(feature="collections")] + fn read_to_end(r: &mut R, buf: &mut Vec) -> Result { + let start_len = buf.len(); + let mut len = start_len; +@@ -422,7 +414,6 @@ fn read_to_end(r: &mut R, buf: &mut Vec) -> Result + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Read { + /// Pull some bytes from this source into the specified buffer, returning + /// how many bytes were read. +@@ -472,7 +463,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read(&mut self, buf: &mut [u8]) -> Result; + + /// Read all bytes until EOF in this source, placing them into `buf`. +@@ -514,7 +504,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_end(&mut self, buf: &mut Vec) -> Result { + read_to_end(self, buf) + } +@@ -552,7 +542,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_string(&mut self, buf: &mut String) -> Result { + // Note that we do *not* call `.read_to_end()` here. We are passing + // `&mut Vec` (the raw contents of `buf`) into the `read_to_end` +@@ -613,7 +603,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "read_exact", since = "1.6.0")] + fn read_exact(&mut self, mut buf: &mut [u8]) -> Result<()> { + while !buf.is_empty() { + match self.read(buf) { +@@ -665,7 +654,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + + /// Transforms this `Read` instance to an `Iterator` over its bytes. +@@ -695,7 +683,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn bytes(self) -> Bytes where Self: Sized { + Bytes { inner: self } + } +@@ -732,10 +719,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[unstable(feature = "io", reason = "the semantics of a partial read/write \ +- of where errors happen is currently \ +- unclear and may change", +- issue = "27802")] + fn chars(self) -> Chars where Self: Sized { + Chars { inner: self } + } +@@ -770,7 +753,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn chain(self, next: R) -> Chain where Self: Sized { + Chain { first: self, second: next, done_first: false } + } +@@ -804,7 +786,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn take(self, limit: u64) -> Take where Self: Sized { + Take { inner: self, limit: limit } + } +@@ -840,7 +821,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Write { + /// Write a buffer into this object, returning how many bytes were written. + /// +@@ -880,7 +860,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write(&mut self, buf: &[u8]) -> Result; + + /// Flush this output stream, ensuring that all intermediately buffered +@@ -906,7 +885,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn flush(&mut self) -> Result<()>; + + /// Attempts to write an entire buffer into this write. +@@ -933,7 +911,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_all(&mut self, mut buf: &[u8]) -> Result<()> { + while !buf.is_empty() { + match self.write(buf) { +@@ -985,7 +962,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_fmt(&mut self, fmt: fmt::Arguments) -> Result<()> { + // Create a shim which translates a Write to a fmt::Write and saves + // off I/O errors. instead of discarding them +@@ -1041,7 +1017,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + } + +@@ -1071,7 +1046,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Seek { + /// Seek to an offset, in bytes, in a stream. + /// +@@ -1087,7 +1061,6 @@ pub trait Seek { + /// Seeking to a negative offset is considered an error. + /// + /// [`SeekFrom::Start`]: enum.SeekFrom.html#variant.Start +- #[stable(feature = "rust1", since = "1.0.0")] + fn seek(&mut self, pos: SeekFrom) -> Result; + } + +@@ -1097,29 +1070,26 @@ pub trait Seek { + /// + /// [`Seek`]: trait.Seek.html + #[derive(Copy, PartialEq, Eq, Clone, Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub enum SeekFrom { + /// Set the offset to the provided number of bytes. +- #[stable(feature = "rust1", since = "1.0.0")] +- Start(#[stable(feature = "rust1", since = "1.0.0")] u64), ++ Start(u64), + + /// Set the offset to the size of this object plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- End(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ End(i64), + + /// Set the offset to the current position plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- Current(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ Current(i64), + } + ++#[cfg(feature="collections")] + fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + -> Result { + let mut read = 0; +@@ -1199,7 +1169,7 @@ fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + /// # } + /// ``` + /// +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub trait BufRead: Read { + /// Fills the internal buffer of this object, returning the buffer contents. + /// +@@ -1244,7 +1214,6 @@ pub trait BufRead: Read { + /// // ensure the bytes we worked with aren't returned again later + /// stdin.consume(length); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn fill_buf(&mut self) -> Result<&[u8]>; + + /// Tells this buffer that `amt` bytes have been consumed from the buffer, +@@ -1266,7 +1235,6 @@ pub trait BufRead: Read { + /// that method's example includes an example of `consume()`. + /// + /// [`fill_buf()`]: #tymethod.fill_buf +- #[stable(feature = "rust1", since = "1.0.0")] + fn consume(&mut self, amt: usize); + + /// Read all bytes into `buf` until the delimiter `byte` or EOF is reached. +@@ -1308,7 +1276,6 @@ pub trait BufRead: Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_until(&mut self, byte: u8, buf: &mut Vec) -> Result { + read_until(self, byte, buf) + } +@@ -1355,7 +1322,6 @@ pub trait BufRead: Read { + /// buffer.clear(); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_line(&mut self, buf: &mut String) -> Result { + // Note that we are not calling the `.read_until` method here, but + // rather our hardcoded implementation. For more details as to why, see +@@ -1392,7 +1358,6 @@ pub trait BufRead: Read { + /// println!("{:?}", content.unwrap()); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn split(self, byte: u8) -> Split where Self: Sized { + Split { buf: self, delim: byte } + } +@@ -1420,7 +1385,6 @@ pub trait BufRead: Read { + /// println!("{}", line.unwrap()); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn lines(self) -> Lines where Self: Sized { + Lines { buf: self } + } +@@ -1432,14 +1396,12 @@ pub trait BufRead: Read { + /// Please see the documentation of [`chain()`] for more details. + /// + /// [`chain()`]: trait.Read.html#method.chain +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Chain { + first: T, + second: U, + done_first: bool, + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Chain { + fn read(&mut self, buf: &mut [u8]) -> Result { + if !self.done_first { +@@ -1452,7 +1414,7 @@ impl Read for Chain { + } + } + +-#[stable(feature = "chain_bufread", since = "1.9.0")] ++#[cfg(feature="collections")] + impl BufRead for Chain { + fn fill_buf(&mut self) -> Result<&[u8]> { + if !self.done_first { +@@ -1479,7 +1441,6 @@ impl BufRead for Chain { + /// Please see the documentation of `take()` for more details. + /// + /// [take]: trait.Read.html#method.take +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Take { + inner: T, + limit: u64, +@@ -1511,7 +1472,6 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn limit(&self) -> u64 { self.limit } + + /// Consumes the `Take`, returning the wrapped reader. +@@ -1536,13 +1496,11 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[unstable(feature = "io_take_into_inner", issue = "23755")] + pub fn into_inner(self) -> T { + self.inner + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Take { + fn read(&mut self, buf: &mut [u8]) -> Result { + // Don't call into inner reader at all at EOF because it may still block +@@ -1557,7 +1515,7 @@ impl Read for Take { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Take { + fn fill_buf(&mut self) -> Result<&[u8]> { + // Don't call into inner reader at all at EOF because it may still block +@@ -1596,12 +1554,10 @@ fn read_one_byte(reader: &mut Read) -> Option> { + /// Please see the documentation of [`bytes()`] for more details. + /// + /// [`bytes()`]: trait.Read.html#method.bytes +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Bytes { + inner: R, + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Iterator for Bytes { + type Item = Result; + +@@ -1616,8 +1572,6 @@ impl Iterator for Bytes { + /// Please see the documentation of `chars()` for more details. + /// + /// [chars]: trait.Read.html#method.chars +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + pub struct Chars { + inner: R, + } +@@ -1625,8 +1579,6 @@ pub struct Chars { + /// An enumeration of possible errors that can be generated from the `Chars` + /// adapter. + #[derive(Debug)] +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + pub enum CharsError { + /// Variant representing that the underlying stream was read successfully + /// but it did not contain valid utf8 data. +@@ -1636,8 +1588,6 @@ pub enum CharsError { + Other(Error), + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl Iterator for Chars { + type Item = result::Result; + +@@ -1669,25 +1619,6 @@ impl Iterator for Chars { + } + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] +-impl std_error::Error for CharsError { +- fn description(&self) -> &str { +- match *self { +- CharsError::NotUtf8 => "invalid utf8 encoding", +- CharsError::Other(ref e) => std_error::Error::description(e), +- } +- } +- fn cause(&self) -> Option<&std_error::Error> { +- match *self { +- CharsError::NotUtf8 => None, +- CharsError::Other(ref e) => e.cause(), +- } +- } +-} +- +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl fmt::Display for CharsError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + match *self { +@@ -1706,13 +1637,13 @@ impl fmt::Display for CharsError { + /// `BufRead`. Please see the documentation of `split()` for more details. + /// + /// [split]: trait.BufRead.html#method.split +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub struct Split { + buf: B, + delim: u8, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Split { + type Item = Result>; + +@@ -1737,12 +1668,12 @@ impl Iterator for Split { + /// `BufRead`. Please see the documentation of `lines()` for more details. + /// + /// [lines]: trait.BufRead.html#method.lines +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub struct Lines { + buf: B, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Lines { + type Item = Result; + +diff --git a/prelude.rs b/prelude.rs +index 8772d0f..49d66c9 100644 +--- a/prelude.rs ++++ b/prelude.rs +@@ -18,7 +18,8 @@ + //! use std::io::prelude::*; + //! ``` + +-#![stable(feature = "rust1", since = "1.0.0")] ++pub use super::{Read, Write, Seek}; ++#[cfg(feature="collections")] pub use super::BufRead; + +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use super::{Read, Write, BufRead, Seek}; ++#[cfg(feature="collections")] pub use alloc::boxed::Box; ++#[cfg(feature="collections")] pub use collections::vec::Vec; +diff --git a/util.rs b/util.rs +index 2c68802..93bcfc3 100644 +--- a/util.rs ++++ b/util.rs +@@ -10,7 +10,8 @@ + + #![allow(missing_copy_implementations)] + +-use io::{self, Read, Write, ErrorKind, BufRead}; ++use io::{self, Read, Write, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; + + /// Copies the entire contents of a reader into a writer. + /// +@@ -42,7 +43,6 @@ use io::{self, Read, Write, ErrorKind, BufRead}; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn copy(reader: &mut R, writer: &mut W) -> io::Result + where R: Read, W: Write + { +@@ -66,7 +66,6 @@ pub fn copy(reader: &mut R, writer: &mut W) -> io::Result< + /// the documentation of `empty()` for more details. + /// + /// [empty]: fn.empty.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Empty { _priv: () } + + /// Constructs a new handle to an empty reader. +@@ -84,14 +83,12 @@ pub struct Empty { _priv: () } + /// io::empty().read_to_string(&mut buffer).unwrap(); + /// assert!(buffer.is_empty()); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn empty() -> Empty { Empty { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Empty { + fn read(&mut self, _buf: &mut [u8]) -> io::Result { Ok(0) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Empty { + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(&[]) } + fn consume(&mut self, _n: usize) {} +@@ -103,7 +100,6 @@ impl BufRead for Empty { + /// see the documentation of `repeat()` for more details. + /// + /// [repeat]: fn.repeat.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Repeat { byte: u8 } + + /// Creates an instance of a reader that infinitely repeats one byte. +@@ -120,10 +116,8 @@ pub struct Repeat { byte: u8 } + /// io::repeat(0b101).read_exact(&mut buffer).unwrap(); + /// assert_eq!(buffer, [0b101, 0b101, 0b101]); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn repeat(byte: u8) -> Repeat { Repeat { byte: byte } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Repeat { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + for slot in &mut *buf { +@@ -139,7 +133,6 @@ impl Read for Repeat { + /// see the documentation of `sink()` for more details. + /// + /// [sink]: fn.sink.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Sink { _priv: () } + + /// Creates an instance of a writer which will successfully consume all data. +@@ -156,10 +149,8 @@ pub struct Sink { _priv: () } + /// let num_bytes = io::sink().write(&buffer).unwrap(); + /// assert_eq!(num_bytes, 5); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn sink() -> Sink { Sink { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for Sink { + fn write(&mut self, buf: &[u8]) -> io::Result { Ok(buf.len()) } + fn flush(&mut self) -> io::Result<()> { Ok(()) } diff --git a/patches/d5c3becf00452fd1d35e695494d7ae41dedb11d8.patch b/patches/d5c3becf00452fd1d35e695494d7ae41dedb11d8.patch new file mode 100644 index 0000000..fd08de8 --- /dev/null +++ b/patches/d5c3becf00452fd1d35e695494d7ae41dedb11d8.patch @@ -0,0 +1,1509 @@ +diff --git a/buffered.rs b/buffered.rs +index c15a1c8..e2ed487 100644 +--- a/buffered.rs ++++ b/buffered.rs +@@ -10,13 +10,13 @@ + + //! Buffering wrappers for I/O traits + ++use core::prelude::v1::*; + use io::prelude::*; + +-use cmp; +-use error; +-use fmt; ++use core::cmp; ++use core::fmt; + use io::{self, DEFAULT_BUF_SIZE, Error, ErrorKind, SeekFrom}; +-use memchr; ++use io::memchr; + + /// The `BufReader` struct adds buffering to any reader. + /// +@@ -46,7 +46,6 @@ use memchr; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufReader { + inner: R, + buf: Box<[u8]>, +@@ -69,7 +68,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: R) -> BufReader { + BufReader::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -90,7 +88,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: R) -> BufReader { + BufReader { + inner: inner, +@@ -118,7 +115,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &R { &self.inner } + + /// Gets a mutable reference to the underlying reader. +@@ -139,7 +135,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut R { &mut self.inner } + + /// Unwraps this `BufReader`, returning the underlying reader. +@@ -160,11 +155,9 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> R { self.inner } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for BufReader { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + // If we don't have any buffered data and we're doing a massive read +@@ -182,7 +175,6 @@ impl Read for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl BufRead for BufReader { + fn fill_buf(&mut self) -> io::Result<&[u8]> { + // If we've reached the end of our internal buffer then we need to fetch +@@ -202,7 +194,6 @@ impl BufRead for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufReader where R: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufReader") +@@ -212,7 +203,6 @@ impl fmt::Debug for BufReader where R: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufReader { + /// Seek to an offset, in bytes, in the underlying reader. + /// +@@ -305,7 +295,6 @@ impl Seek for BufReader { + /// [`Write`]: ../../std/io/trait.Write.html + /// [`write`]: ../../std/net/struct.TcpStream.html#method.write + /// [`TcpStream`]: ../../std/net/struct.TcpStream.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufWriter { + inner: Option, + buf: Vec, +@@ -340,7 +329,6 @@ pub struct BufWriter { + /// }; + /// ``` + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct IntoInnerError(W, Error); + + impl BufWriter { +@@ -354,7 +342,6 @@ impl BufWriter { + /// + /// let mut buffer = BufWriter::new(TcpStream::connect("127.0.0.1:34254").unwrap()); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> BufWriter { + BufWriter::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -372,7 +359,6 @@ impl BufWriter { + /// let stream = TcpStream::connect("127.0.0.1:34254").unwrap(); + /// let mut buffer = BufWriter::with_capacity(100, stream); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> BufWriter { + BufWriter { + inner: Some(inner), +@@ -421,7 +407,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.as_ref().unwrap() } + + /// Gets a mutable reference to the underlying writer. +@@ -439,7 +424,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.as_mut().unwrap() } + + /// Unwraps this `BufWriter`, returning the underlying writer. +@@ -457,7 +441,6 @@ impl BufWriter { + /// // unwrap the TcpStream and flush the buffer + /// let stream = buffer.into_inner().unwrap(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(mut self) -> Result>> { + match self.flush_buf() { + Err(e) => Err(IntoInnerError(self, e)), +@@ -466,7 +449,6 @@ impl BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for BufWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.buf.len() + buf.len() > self.buf.capacity() { +@@ -486,7 +468,6 @@ impl Write for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufWriter") +@@ -496,7 +477,6 @@ impl fmt::Debug for BufWriter where W: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufWriter { + /// Seek to the offset, in bytes, in the underlying writer. + /// +@@ -506,7 +486,6 @@ impl Seek for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Drop for BufWriter { + fn drop(&mut self) { + if self.inner.is_some() && !self.panicked { +@@ -545,7 +524,6 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn error(&self) -> &Error { &self.1 } + + /// Returns the buffered writer instance which generated the error. +@@ -578,23 +556,13 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> W { self.0 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl From> for Error { + fn from(iie: IntoInnerError) -> Error { iie.1 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for IntoInnerError { +- fn description(&self) -> &str { +- error::Error::description(self.error()) +- } +-} +- +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for IntoInnerError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.error().fmt(f) +@@ -649,7 +617,6 @@ impl fmt::Display for IntoInnerError { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct LineWriter { + inner: BufWriter, + need_flush: bool, +@@ -670,7 +637,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> LineWriter { + // Lines typically aren't that long, don't use a giant buffer + LineWriter::with_capacity(1024, inner) +@@ -691,7 +657,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> LineWriter { + LineWriter { + inner: BufWriter::with_capacity(cap, inner), +@@ -715,7 +680,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.get_ref() } + + /// Gets a mutable reference to the underlying writer. +@@ -738,7 +702,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.get_mut() } + + /// Unwraps this `LineWriter`, returning the underlying writer. +@@ -760,7 +723,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> Result>> { + self.inner.into_inner().map_err(|IntoInnerError(buf, e)| { + IntoInnerError(LineWriter { +@@ -771,7 +733,6 @@ impl LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for LineWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.need_flush { +@@ -816,7 +777,6 @@ impl Write for LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for LineWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("LineWriter") +diff --git a/cursor.rs b/cursor.rs +index 1b50233..6a7b44f 100644 +--- a/cursor.rs ++++ b/cursor.rs +@@ -8,10 +8,11 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + ++use core::prelude::v1::*; + use io::prelude::*; + +-use core::convert::TryInto; +-use cmp; ++#[cfg(feature = "collections")] use core::convert::TryInto; ++use core::cmp; + use io::{self, SeekFrom, Error, ErrorKind}; + + /// A `Cursor` wraps another type and provides it with a +@@ -79,7 +80,6 @@ use io::{self, SeekFrom, Error, ErrorKind}; + /// assert_eq!(&buff.get_ref()[5..15], &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]); + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Clone, Debug)] + pub struct Cursor { + inner: T, +@@ -98,7 +98,6 @@ impl Cursor { + /// # fn force_inference(_: &Cursor>) {} + /// # force_inference(&buff); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: T) -> Cursor { + Cursor { pos: 0, inner: inner } + } +@@ -116,7 +115,6 @@ impl Cursor { + /// + /// let vec = buff.into_inner(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> T { self.inner } + + /// Gets a reference to the underlying value in this cursor. +@@ -132,7 +130,6 @@ impl Cursor { + /// + /// let reference = buff.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &T { &self.inner } + + /// Gets a mutable reference to the underlying value in this cursor. +@@ -151,7 +148,6 @@ impl Cursor { + /// + /// let reference = buff.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut T { &mut self.inner } + + /// Returns the current position of this cursor. +@@ -173,7 +169,6 @@ impl Cursor { + /// buff.seek(SeekFrom::Current(-1)).unwrap(); + /// assert_eq!(buff.position(), 1); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn position(&self) -> u64 { self.pos } + + /// Sets the position of this cursor. +@@ -193,11 +188,9 @@ impl Cursor { + /// buff.set_position(4); + /// assert_eq!(buff.position(), 4); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn set_position(&mut self, pos: u64) { self.pos = pos; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl io::Seek for Cursor where T: AsRef<[u8]> { + fn seek(&mut self, style: SeekFrom) -> io::Result { + let pos = match style { +@@ -216,25 +209,27 @@ impl io::Seek for Cursor where T: AsRef<[u8]> { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Cursor where T: AsRef<[u8]> { + fn read(&mut self, buf: &mut [u8]) -> io::Result { +- let n = Read::read(&mut self.fill_buf()?, buf)?; ++ let n = Read::read(&mut self.get_buf()?, buf)?; + self.pos += n as u64; + Ok(n) + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl BufRead for Cursor where T: AsRef<[u8]> { +- fn fill_buf(&mut self) -> io::Result<&[u8]> { ++impl Cursor where T: AsRef<[u8]> { ++ fn get_buf(&mut self) -> io::Result<&[u8]> { + let amt = cmp::min(self.pos, self.inner.as_ref().len() as u64); + Ok(&self.inner.as_ref()[(amt as usize)..]) + } ++} ++ ++#[cfg(feature = "collections")] ++impl BufRead for Cursor where T: AsRef<[u8]> { ++ fn fill_buf(&mut self) -> io::Result<&[u8]> { self.get_buf() } + fn consume(&mut self, amt: usize) { self.pos += amt as u64; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for Cursor<&'a mut [u8]> { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -246,7 +241,7 @@ impl<'a> Write for Cursor<&'a mut [u8]> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature = "collections")] + impl Write for Cursor> { + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos: usize = self.position().try_into().map_err(|_| { +@@ -276,8 +271,8 @@ impl Write for Cursor> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "cursor_box_slice", since = "1.5.0")] +-impl Write for Cursor> { ++#[cfg(feature = "alloc")] ++impl Write for Cursor<::alloc::boxed::Box<[u8]>> { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos = cmp::min(self.pos, self.inner.len() as u64); +diff --git a/error.rs b/error.rs +index 434f522..fdcbe31 100644 +--- a/error.rs ++++ b/error.rs +@@ -8,11 +8,16 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use error; +-use fmt; +-use result; +-use sys; +-use convert::From; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++#[cfg(not(feature="alloc"))] use ::FakeBox as Box; ++use core::convert::Into; ++use core::fmt; ++use core::marker::{Send, Sync}; ++use core::option::Option::{self, Some, None}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(not(feature="collections"))] use ::ErrorString as String; ++use core::convert::From; + + /// A specialized [`Result`](../result/enum.Result.html) type for I/O + /// operations. +@@ -44,7 +49,6 @@ use convert::From; + /// Ok(buffer) + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub type Result = result::Result; + + /// The error type for I/O operations of the `Read`, `Write`, `Seek`, and +@@ -56,7 +60,6 @@ pub type Result = result::Result; + /// + /// [`ErrorKind`]: enum.ErrorKind.html + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Error { + repr: Repr, + } +@@ -64,13 +67,16 @@ pub struct Error { + enum Repr { + Os(i32), + Simple(ErrorKind), ++ #[cfg(feature="alloc")] + Custom(Box), ++ #[cfg(not(feature="alloc"))] ++ Custom(Custom), + } + + #[derive(Debug)] + struct Custom { + kind: ErrorKind, +- error: Box, ++ error: String, + } + + /// A list specifying general categories of I/O error. +@@ -82,47 +88,34 @@ struct Custom { + /// + /// [`io::Error`]: struct.Error.html + #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)] +-#[stable(feature = "rust1", since = "1.0.0")] + #[allow(deprecated)] + pub enum ErrorKind { + /// An entity was not found, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + NotFound, + /// The operation lacked the necessary privileges to complete. +- #[stable(feature = "rust1", since = "1.0.0")] + PermissionDenied, + /// The connection was refused by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionRefused, + /// The connection was reset by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionReset, + /// The connection was aborted (terminated) by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionAborted, + /// The network operation failed because it was not connected yet. +- #[stable(feature = "rust1", since = "1.0.0")] + NotConnected, + /// A socket address could not be bound because the address is already in + /// use elsewhere. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrInUse, + /// A nonexistent interface was requested or the requested address was not + /// local. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrNotAvailable, + /// The operation failed because a pipe was closed. +- #[stable(feature = "rust1", since = "1.0.0")] + BrokenPipe, + /// An entity already exists, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + AlreadyExists, + /// The operation needs to block to complete, but the blocking operation was + /// requested to not occur. +- #[stable(feature = "rust1", since = "1.0.0")] + WouldBlock, + /// A parameter was incorrect. +- #[stable(feature = "rust1", since = "1.0.0")] + InvalidInput, + /// Data not valid for the operation were encountered. + /// +@@ -134,10 +127,8 @@ pub enum ErrorKind { + /// `InvalidData` if the file's contents are not valid UTF-8. + /// + /// [`InvalidInput`]: #variant.InvalidInput +- #[stable(feature = "io_invalid_data", since = "1.2.0")] + InvalidData, + /// The I/O operation's timeout expired, causing it to be canceled. +- #[stable(feature = "rust1", since = "1.0.0")] + TimedOut, + /// An error returned when an operation could not be completed because a + /// call to [`write()`] returned [`Ok(0)`]. +@@ -148,15 +139,12 @@ pub enum ErrorKind { + /// + /// [`write()`]: ../../std/io/trait.Write.html#tymethod.write + /// [`Ok(0)`]: ../../std/io/type.Result.html +- #[stable(feature = "rust1", since = "1.0.0")] + WriteZero, + /// This operation was interrupted. + /// + /// Interrupted operations can typically be retried. +- #[stable(feature = "rust1", since = "1.0.0")] + Interrupted, + /// Any I/O error not part of this list. +- #[stable(feature = "rust1", since = "1.0.0")] + Other, + + /// An error returned when an operation could not be completed because an +@@ -165,15 +153,10 @@ pub enum ErrorKind { + /// This typically means that an operation could only succeed if it read a + /// particular number of bytes but only a smaller number of bytes could be + /// read. +- #[stable(feature = "read_exact", since = "1.6.0")] + UnexpectedEof, + + /// A marker variant that tells the compiler that users of this enum cannot + /// match it exhaustively. +- #[unstable(feature = "io_error_internals", +- reason = "better expressed through extensible enums that this \ +- enum cannot be exhaustively matched against", +- issue = "0")] + #[doc(hidden)] + __Nonexhaustive, + } +@@ -206,7 +189,6 @@ impl ErrorKind { + + /// Intended for use for errors not exposed to the user, where allocating onto + /// the heap (for normal construction via Error::new) is too costly. +-#[stable(feature = "io_error_from_errorkind", since = "1.14.0")] + impl From for Error { + fn from(kind: ErrorKind) -> Error { + Error { +@@ -234,14 +216,13 @@ impl Error { + /// // errors can also be created from other errors + /// let custom_error2 = Error::new(ErrorKind::Interrupted, custom_error); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(kind: ErrorKind, error: E) -> Error +- where E: Into> ++ where E: Into + { + Self::_new(kind, error.into()) + } + +- fn _new(kind: ErrorKind, error: Box) -> Error { ++ fn _new(kind: ErrorKind, error: String) -> Error { + Error { + repr: Repr::Custom(Box::new(Custom { + kind: kind, +@@ -250,24 +231,6 @@ impl Error { + } + } + +- /// Returns an error representing the last OS error which occurred. +- /// +- /// This function reads the value of `errno` for the target platform (e.g. +- /// `GetLastError` on Windows) and will return a corresponding instance of +- /// `Error` for the error code. +- /// +- /// # Examples +- /// +- /// ``` +- /// use std::io::Error; +- /// +- /// println!("last OS error: {:?}", Error::last_os_error()); +- /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] +- pub fn last_os_error() -> Error { +- Error::from_raw_os_error(sys::os::errno() as i32) +- } +- + /// Creates a new instance of an `Error` from a particular OS error code. + /// + /// # Examples +@@ -293,7 +256,6 @@ impl Error { + /// assert_eq!(error.kind(), io::ErrorKind::AddrInUse); + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn from_raw_os_error(code: i32) -> Error { + Error { repr: Repr::Os(code) } + } +@@ -324,7 +286,6 @@ impl Error { + /// print_os_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn raw_os_error(&self) -> Option { + match self.repr { + Repr::Os(i) => Some(i), +@@ -358,12 +319,11 @@ impl Error { + /// print_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_ref(&self) -> Option<&(error::Error+Send+Sync+'static)> { ++ pub fn get_ref(&self) -> Option<&String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref c) => Some(&*c.error), ++ Repr::Custom(ref c) => Some(&c.error), + } + } + +@@ -429,12 +389,11 @@ impl Error { + /// print_error(&change_error(Error::new(ErrorKind::Other, MyError::new()))); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_mut(&mut self) -> Option<&mut (error::Error+Send+Sync+'static)> { ++ pub fn get_mut(&mut self) -> Option<&mut String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref mut c) => Some(&mut *c.error), ++ Repr::Custom(ref mut c) => Some(&mut c.error), + } + } + +@@ -463,8 +422,7 @@ impl Error { + /// print_error(Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn into_inner(self) -> Option> { ++ pub fn into_inner(self) -> Option { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +@@ -490,10 +448,9 @@ impl Error { + /// print_error(Error::new(ErrorKind::AddrInUse, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn kind(&self) -> ErrorKind { + match self.repr { +- Repr::Os(code) => sys::decode_error_kind(code), ++ Repr::Os(_code) => ErrorKind::Other, + Repr::Custom(ref c) => c.kind, + Repr::Simple(kind) => kind, + } +@@ -504,21 +461,18 @@ impl fmt::Debug for Repr { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match *self { + Repr::Os(ref code) => +- fmt.debug_struct("Os").field("code", code) +- .field("message", &sys::os::error_string(*code)).finish(), ++ fmt.debug_struct("Os").field("code", code).finish(), + Repr::Custom(ref c) => fmt.debug_tuple("Custom").field(c).finish(), + Repr::Simple(kind) => fmt.debug_tuple("Kind").field(&kind).finish(), + } + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for Error { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match self.repr { + Repr::Os(code) => { +- let detail = sys::os::error_string(code); +- write!(fmt, "{} (os error {})", detail, code) ++ write!(fmt, "os error {}", code) + } + Repr::Custom(ref c) => c.error.fmt(fmt), + Repr::Simple(kind) => write!(fmt, "{}", kind.as_str()), +@@ -526,24 +480,6 @@ impl fmt::Display for Error { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for Error { +- fn description(&self) -> &str { +- match self.repr { +- Repr::Os(..) | Repr::Simple(..) => self.kind().as_str(), +- Repr::Custom(ref c) => c.error.description(), +- } +- } +- +- fn cause(&self) -> Option<&error::Error> { +- match self.repr { +- Repr::Os(..) => None, +- Repr::Simple(..) => None, +- Repr::Custom(ref c) => c.error.cause(), +- } +- } +-} +- + fn _assert_error_is_sync_send() { + fn _is_sync_send() {} + _is_sync_send::(); +diff --git a/impls.rs b/impls.rs +index f691289..c4374d3 100644 +--- a/impls.rs ++++ b/impls.rs +@@ -8,26 +8,31 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use cmp; +-use io::{self, SeekFrom, Read, Write, Seek, BufRead, Error, ErrorKind}; +-use fmt; +-use mem; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++use core::cmp; ++use io::{self, SeekFrom, Read, Write, Seek, Error, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; ++use core::fmt; ++use core::mem; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(feature="collections")] use collections::vec::Vec; + + // ============================================================================= + // Forwarding implementations + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, R: Read + ?Sized> Read for &'a mut R { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -38,7 +43,6 @@ impl<'a, R: Read + ?Sized> Read for &'a mut R { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, W: Write + ?Sized> Write for &'a mut W { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -56,12 +60,11 @@ impl<'a, W: Write + ?Sized> Write for &'a mut W { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, S: Seek + ?Sized> Seek for &'a mut S { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -80,18 +83,20 @@ impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Read for Box { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -102,7 +107,7 @@ impl Read for Box { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Write for Box { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -120,12 +125,12 @@ impl Write for Box { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Seek for Box { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Box { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -151,7 +156,6 @@ impl BufRead for Box { + /// + /// Note that reading updates the slice to point to the yet unread part. + /// The slice will be empty when EOF is reached. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Read for &'a [u8] { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { +@@ -193,7 +197,7 @@ impl<'a> Read for &'a [u8] { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a> BufRead for &'a [u8] { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(*self) } +@@ -207,7 +211,6 @@ impl<'a> BufRead for &'a [u8] { + /// + /// Note that writing updates the slice to point to the yet unwritten part. + /// The slice will be empty when it has been completely overwritten. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for &'a mut [u8] { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -233,7 +236,7 @@ impl<'a> Write for &'a mut [u8] { + + /// Write is implemented for `Vec` by appending to the vector. + /// The vector will grow as needed. +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Write for Vec { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { +diff --git a/memchr.rs b/memchr.rs +index 3824a5f..312cf47 100644 +--- a/memchr.rs ++++ b/memchr.rs +@@ -11,10 +11,12 @@ + // Original implementation taken from rust-memchr + // Copyright 2015 Andrew Gallant, bluss and Nicolas Koch + ++pub use self::fallback::{memchr,memrchr}; ++ + #[allow(dead_code)] + pub mod fallback { +- use cmp; +- use mem; ++ use core::cmp; ++ use core::mem; + + const LO_U64: u64 = 0x0101010101010101; + const HI_U64: u64 = 0x8080808080808080; +diff --git a/mod.rs b/mod.rs +index 5450a10..f57ce3a 100644 +--- a/mod.rs ++++ b/mod.rs +@@ -253,44 +253,34 @@ + //! [`try!`]: ../macro.try.html + //! [`read()`]: trait.Read.html#tymethod.read + +-#![stable(feature = "rust1", since = "1.0.0")] +- +-use cmp; ++use core::cmp; + use std_unicode::str as core_str; +-use error as std_error; +-use fmt; +-use result; +-use str; +-use memchr; +- +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::{BufReader, BufWriter, LineWriter}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::IntoInnerError; +-#[stable(feature = "rust1", since = "1.0.0")] ++use core::fmt; ++use core::iter::{Iterator}; ++use core::marker::Sized; ++#[cfg(feature="collections")] use core::ops::{Drop, FnOnce}; ++use core::option::Option::{self, Some, None}; ++use core::result::Result::{Ok, Err}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++use core::str; ++#[cfg(feature="collections")] use collections::vec::Vec; ++mod memchr; ++ ++#[cfg(feature="collections")] pub use self::buffered::{BufReader, BufWriter, LineWriter}; ++#[cfg(feature="collections")] pub use self::buffered::IntoInnerError; + pub use self::cursor::Cursor; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::error::{Result, Error, ErrorKind}; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::util::{copy, sink, Sink, empty, Empty, repeat, Repeat}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{stdin, stdout, stderr, _print, Stdin, Stdout, Stderr}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{StdoutLock, StderrLock, StdinLock}; +-#[unstable(feature = "libstd_io_internals", issue = "0")] +-#[doc(no_inline, hidden)] +-pub use self::stdio::{set_panic, set_print}; + + pub mod prelude; +-mod buffered; ++#[cfg(feature="collections")] mod buffered; + mod cursor; + mod error; + mod impls; +-mod lazy; + mod util; +-mod stdio; + +-const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; ++const DEFAULT_BUF_SIZE: usize = 8 * 1024; + + // A few methods below (read_to_string, read_line) will append data into a + // `String` buffer, but we need to be pretty careful when doing this. The +@@ -310,6 +300,7 @@ const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; + // 2. We're passing a raw buffer to the function `f`, and it is expected that + // the function only *appends* bytes to the buffer. We'll get undefined + // behavior if existing bytes are overwritten to have non-UTF-8 data. ++#[cfg(feature="collections")] + fn append_to_string(buf: &mut String, f: F) -> Result + where F: FnOnce(&mut Vec) -> Result + { +@@ -341,6 +332,7 @@ fn append_to_string(buf: &mut String, f: F) -> Result + // of data to return. Simply tacking on an extra DEFAULT_BUF_SIZE space every + // time is 4,500 times (!) slower than this if the reader has a very small + // amount of data to return. ++#[cfg(feature="collections")] + fn read_to_end(r: &mut R, buf: &mut Vec) -> Result { + let start_len = buf.len(); + let mut len = start_len; +@@ -423,7 +415,6 @@ fn read_to_end(r: &mut R, buf: &mut Vec) -> Result + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Read { + /// Pull some bytes from this source into the specified buffer, returning + /// how many bytes were read. +@@ -473,7 +464,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read(&mut self, buf: &mut [u8]) -> Result; + + /// Read all bytes until EOF in this source, placing them into `buf`. +@@ -515,7 +505,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_end(&mut self, buf: &mut Vec) -> Result { + read_to_end(self, buf) + } +@@ -553,7 +543,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_string(&mut self, buf: &mut String) -> Result { + // Note that we do *not* call `.read_to_end()` here. We are passing + // `&mut Vec` (the raw contents of `buf`) into the `read_to_end` +@@ -614,7 +604,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "read_exact", since = "1.6.0")] + fn read_exact(&mut self, mut buf: &mut [u8]) -> Result<()> { + while !buf.is_empty() { + match self.read(buf) { +@@ -666,7 +655,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + + /// Transforms this `Read` instance to an `Iterator` over its bytes. +@@ -696,7 +684,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn bytes(self) -> Bytes where Self: Sized { + Bytes { inner: self } + } +@@ -733,10 +720,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[unstable(feature = "io", reason = "the semantics of a partial read/write \ +- of where errors happen is currently \ +- unclear and may change", +- issue = "27802")] + fn chars(self) -> Chars where Self: Sized { + Chars { inner: self } + } +@@ -771,7 +754,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn chain(self, next: R) -> Chain where Self: Sized { + Chain { first: self, second: next, done_first: false } + } +@@ -805,7 +787,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn take(self, limit: u64) -> Take where Self: Sized { + Take { inner: self, limit: limit } + } +@@ -845,7 +826,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Write { + /// Write a buffer into this object, returning how many bytes were written. + /// +@@ -885,7 +865,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write(&mut self, buf: &[u8]) -> Result; + + /// Flush this output stream, ensuring that all intermediately buffered +@@ -911,7 +890,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn flush(&mut self) -> Result<()>; + + /// Attempts to write an entire buffer into this write. +@@ -938,7 +916,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_all(&mut self, mut buf: &[u8]) -> Result<()> { + while !buf.is_empty() { + match self.write(buf) { +@@ -990,7 +967,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_fmt(&mut self, fmt: fmt::Arguments) -> Result<()> { + // Create a shim which translates a Write to a fmt::Write and saves + // off I/O errors. instead of discarding them +@@ -1046,7 +1022,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + } + +@@ -1076,7 +1051,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Seek { + /// Seek to an offset, in bytes, in a stream. + /// +@@ -1092,7 +1066,6 @@ pub trait Seek { + /// Seeking to a negative offset is considered an error. + /// + /// [`SeekFrom::Start`]: enum.SeekFrom.html#variant.Start +- #[stable(feature = "rust1", since = "1.0.0")] + fn seek(&mut self, pos: SeekFrom) -> Result; + } + +@@ -1102,29 +1075,26 @@ pub trait Seek { + /// + /// [`Seek`]: trait.Seek.html + #[derive(Copy, PartialEq, Eq, Clone, Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub enum SeekFrom { + /// Set the offset to the provided number of bytes. +- #[stable(feature = "rust1", since = "1.0.0")] +- Start(#[stable(feature = "rust1", since = "1.0.0")] u64), ++ Start(u64), + + /// Set the offset to the size of this object plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- End(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ End(i64), + + /// Set the offset to the current position plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- Current(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ Current(i64), + } + ++#[cfg(feature="collections")] + fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + -> Result { + let mut read = 0; +@@ -1204,7 +1174,7 @@ fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + /// # } + /// ``` + /// +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub trait BufRead: Read { + /// Fills the internal buffer of this object, returning the buffer contents. + /// +@@ -1249,7 +1219,6 @@ pub trait BufRead: Read { + /// // ensure the bytes we worked with aren't returned again later + /// stdin.consume(length); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn fill_buf(&mut self) -> Result<&[u8]>; + + /// Tells this buffer that `amt` bytes have been consumed from the buffer, +@@ -1271,7 +1240,6 @@ pub trait BufRead: Read { + /// that method's example includes an example of `consume()`. + /// + /// [`fill_buf()`]: #tymethod.fill_buf +- #[stable(feature = "rust1", since = "1.0.0")] + fn consume(&mut self, amt: usize); + + /// Read all bytes into `buf` until the delimiter `byte` or EOF is reached. +@@ -1313,7 +1281,6 @@ pub trait BufRead: Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_until(&mut self, byte: u8, buf: &mut Vec) -> Result { + read_until(self, byte, buf) + } +@@ -1360,7 +1327,6 @@ pub trait BufRead: Read { + /// buffer.clear(); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_line(&mut self, buf: &mut String) -> Result { + // Note that we are not calling the `.read_until` method here, but + // rather our hardcoded implementation. For more details as to why, see +@@ -1397,7 +1363,6 @@ pub trait BufRead: Read { + /// println!("{:?}", content.unwrap()); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn split(self, byte: u8) -> Split where Self: Sized { + Split { buf: self, delim: byte } + } +@@ -1431,7 +1396,6 @@ pub trait BufRead: Read { + /// Each line of the iterator has the same error semantics as [`BufRead::read_line()`]. + /// + /// [`BufRead::read_line()`]: trait.BufRead.html#method.read_line +- #[stable(feature = "rust1", since = "1.0.0")] + fn lines(self) -> Lines where Self: Sized { + Lines { buf: self } + } +@@ -1443,14 +1407,12 @@ pub trait BufRead: Read { + /// Please see the documentation of [`chain()`] for more details. + /// + /// [`chain()`]: trait.Read.html#method.chain +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Chain { + first: T, + second: U, + done_first: bool, + } + +-#[stable(feature = "std_debug", since = "1.15.0")] + impl fmt::Debug for Chain { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.debug_struct("Chain") +@@ -1460,7 +1422,6 @@ impl fmt::Debug for Chain { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Chain { + fn read(&mut self, buf: &mut [u8]) -> Result { + if !self.done_first { +@@ -1473,7 +1434,7 @@ impl Read for Chain { + } + } + +-#[stable(feature = "chain_bufread", since = "1.9.0")] ++#[cfg(feature="collections")] + impl BufRead for Chain { + fn fill_buf(&mut self) -> Result<&[u8]> { + if !self.done_first { +@@ -1500,7 +1461,6 @@ impl BufRead for Chain { + /// Please see the documentation of [`take()`] for more details. + /// + /// [`take()`]: trait.Read.html#method.take +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Debug)] + pub struct Take { + inner: T, +@@ -1535,7 +1495,6 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn limit(&self) -> u64 { self.limit } + + /// Consumes the `Take`, returning the wrapped reader. +@@ -1558,13 +1517,11 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "io_take_into_inner", since = "1.15.0")] + pub fn into_inner(self) -> T { + self.inner + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Take { + fn read(&mut self, buf: &mut [u8]) -> Result { + // Don't call into inner reader at all at EOF because it may still block +@@ -1579,7 +1536,7 @@ impl Read for Take { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Take { + fn fill_buf(&mut self) -> Result<&[u8]> { + // Don't call into inner reader at all at EOF because it may still block +@@ -1618,13 +1575,11 @@ fn read_one_byte(reader: &mut Read) -> Option> { + /// Please see the documentation of [`bytes()`] for more details. + /// + /// [`bytes()`]: trait.Read.html#method.bytes +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Debug)] + pub struct Bytes { + inner: R, + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Iterator for Bytes { + type Item = Result; + +@@ -1639,8 +1594,6 @@ impl Iterator for Bytes { + /// Please see the documentation of `chars()` for more details. + /// + /// [chars]: trait.Read.html#method.chars +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + #[derive(Debug)] + pub struct Chars { + inner: R, +@@ -1649,8 +1602,6 @@ pub struct Chars { + /// An enumeration of possible errors that can be generated from the `Chars` + /// adapter. + #[derive(Debug)] +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + pub enum CharsError { + /// Variant representing that the underlying stream was read successfully + /// but it did not contain valid utf8 data. +@@ -1660,8 +1611,6 @@ pub enum CharsError { + Other(Error), + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl Iterator for Chars { + type Item = result::Result; + +@@ -1693,25 +1642,6 @@ impl Iterator for Chars { + } + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] +-impl std_error::Error for CharsError { +- fn description(&self) -> &str { +- match *self { +- CharsError::NotUtf8 => "invalid utf8 encoding", +- CharsError::Other(ref e) => std_error::Error::description(e), +- } +- } +- fn cause(&self) -> Option<&std_error::Error> { +- match *self { +- CharsError::NotUtf8 => None, +- CharsError::Other(ref e) => e.cause(), +- } +- } +-} +- +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl fmt::Display for CharsError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + match *self { +@@ -1730,14 +1660,14 @@ impl fmt::Display for CharsError { + /// `BufRead`. Please see the documentation of `split()` for more details. + /// + /// [split]: trait.BufRead.html#method.split +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + #[derive(Debug)] + pub struct Split { + buf: B, + delim: u8, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Split { + type Item = Result>; + +@@ -1762,13 +1692,13 @@ impl Iterator for Split { + /// `BufRead`. Please see the documentation of `lines()` for more details. + /// + /// [lines]: trait.BufRead.html#method.lines +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + #[derive(Debug)] + pub struct Lines { + buf: B, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Lines { + type Item = Result; + +diff --git a/prelude.rs b/prelude.rs +index 8772d0f..49d66c9 100644 +--- a/prelude.rs ++++ b/prelude.rs +@@ -18,7 +18,8 @@ + //! use std::io::prelude::*; + //! ``` + +-#![stable(feature = "rust1", since = "1.0.0")] ++pub use super::{Read, Write, Seek}; ++#[cfg(feature="collections")] pub use super::BufRead; + +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use super::{Read, Write, BufRead, Seek}; ++#[cfg(feature="collections")] pub use alloc::boxed::Box; ++#[cfg(feature="collections")] pub use collections::vec::Vec; +diff --git a/util.rs b/util.rs +index 4365110..088b54c 100644 +--- a/util.rs ++++ b/util.rs +@@ -10,8 +10,9 @@ + + #![allow(missing_copy_implementations)] + +-use fmt; +-use io::{self, Read, Write, ErrorKind, BufRead}; ++use core::fmt; ++use io::{self, Read, Write, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; + + /// Copies the entire contents of a reader into a writer. + /// +@@ -43,7 +44,6 @@ use io::{self, Read, Write, ErrorKind, BufRead}; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn copy(reader: &mut R, writer: &mut W) -> io::Result + where R: Read, W: Write + { +@@ -67,7 +67,6 @@ pub fn copy(reader: &mut R, writer: &mut W) -> io::Result< + /// the documentation of `empty()` for more details. + /// + /// [empty]: fn.empty.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Empty { _priv: () } + + /// Constructs a new handle to an empty reader. +@@ -85,20 +84,17 @@ pub struct Empty { _priv: () } + /// io::empty().read_to_string(&mut buffer).unwrap(); + /// assert!(buffer.is_empty()); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn empty() -> Empty { Empty { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Empty { + fn read(&mut self, _buf: &mut [u8]) -> io::Result { Ok(0) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Empty { + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(&[]) } + fn consume(&mut self, _n: usize) {} + } + +-#[stable(feature = "std_debug", since = "1.15.0")] + impl fmt::Debug for Empty { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Empty { .. }") +@@ -111,7 +107,6 @@ impl fmt::Debug for Empty { + /// see the documentation of `repeat()` for more details. + /// + /// [repeat]: fn.repeat.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Repeat { byte: u8 } + + /// Creates an instance of a reader that infinitely repeats one byte. +@@ -128,10 +123,8 @@ pub struct Repeat { byte: u8 } + /// io::repeat(0b101).read_exact(&mut buffer).unwrap(); + /// assert_eq!(buffer, [0b101, 0b101, 0b101]); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn repeat(byte: u8) -> Repeat { Repeat { byte: byte } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Repeat { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + for slot in &mut *buf { +@@ -141,7 +134,6 @@ impl Read for Repeat { + } + } + +-#[stable(feature = "std_debug", since = "1.15.0")] + impl fmt::Debug for Repeat { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Repeat { .. }") +@@ -154,7 +146,6 @@ impl fmt::Debug for Repeat { + /// see the documentation of `sink()` for more details. + /// + /// [sink]: fn.sink.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Sink { _priv: () } + + /// Creates an instance of a writer which will successfully consume all data. +@@ -171,16 +162,13 @@ pub struct Sink { _priv: () } + /// let num_bytes = io::sink().write(&buffer).unwrap(); + /// assert_eq!(num_bytes, 5); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn sink() -> Sink { Sink { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for Sink { + fn write(&mut self, buf: &[u8]) -> io::Result { Ok(buf.len()) } + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "std_debug", since = "1.15.0")] + impl fmt::Debug for Sink { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Sink { .. }") diff --git a/patches/dcd80b80ae3fe2f327515e57fdc423a3927e44e6.patch b/patches/dcd80b80ae3fe2f327515e57fdc423a3927e44e6.patch new file mode 100644 index 0000000..5db138d --- /dev/null +++ b/patches/dcd80b80ae3fe2f327515e57fdc423a3927e44e6.patch @@ -0,0 +1,1476 @@ +diff --git a/buffered.rs b/buffered.rs +index cd7a50d..efa81b6 100644 +--- a/buffered.rs ++++ b/buffered.rs +@@ -10,13 +10,13 @@ + + //! Buffering wrappers for I/O traits + ++use core::prelude::v1::*; + use io::prelude::*; + +-use cmp; +-use error; +-use fmt; ++use core::cmp; ++use core::fmt; + use io::{self, DEFAULT_BUF_SIZE, Error, ErrorKind, SeekFrom}; +-use memchr; ++use io::memchr; + + /// The `BufReader` struct adds buffering to any reader. + /// +@@ -46,7 +46,6 @@ use memchr; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufReader { + inner: R, + buf: Box<[u8]>, +@@ -69,7 +68,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: R) -> BufReader { + BufReader::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -90,7 +88,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: R) -> BufReader { + BufReader { + inner: inner, +@@ -118,7 +115,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &R { &self.inner } + + /// Gets a mutable reference to the underlying reader. +@@ -139,7 +135,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut R { &mut self.inner } + + /// Unwraps this `BufReader`, returning the underlying reader. +@@ -160,11 +155,9 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> R { self.inner } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for BufReader { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + // If we don't have any buffered data and we're doing a massive read +@@ -182,7 +175,6 @@ impl Read for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl BufRead for BufReader { + fn fill_buf(&mut self) -> io::Result<&[u8]> { + // If we've reached the end of our internal buffer then we need to fetch +@@ -202,7 +194,6 @@ impl BufRead for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufReader where R: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufReader") +@@ -212,7 +203,6 @@ impl fmt::Debug for BufReader where R: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufReader { + /// Seek to an offset, in bytes, in the underlying reader. + /// +@@ -305,7 +295,6 @@ impl Seek for BufReader { + /// [`Write`]: ../../std/io/trait.Write.html + /// [`write`]: ../../std/net/struct.TcpStream.html#method.write + /// [`TcpStream`]: ../../std/net/struct.TcpStream.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufWriter { + inner: Option, + buf: Vec, +@@ -340,7 +329,6 @@ pub struct BufWriter { + /// }; + /// ``` + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct IntoInnerError(W, Error); + + impl BufWriter { +@@ -354,7 +342,6 @@ impl BufWriter { + /// + /// let mut buffer = BufWriter::new(TcpStream::connect("127.0.0.1:34254").unwrap()); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> BufWriter { + BufWriter::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -372,7 +359,6 @@ impl BufWriter { + /// let stream = TcpStream::connect("127.0.0.1:34254").unwrap(); + /// let mut buffer = BufWriter::with_capacity(100, stream); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> BufWriter { + BufWriter { + inner: Some(inner), +@@ -421,7 +407,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.as_ref().unwrap() } + + /// Gets a mutable reference to the underlying writer. +@@ -439,7 +424,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.as_mut().unwrap() } + + /// Unwraps this `BufWriter`, returning the underlying writer. +@@ -457,7 +441,6 @@ impl BufWriter { + /// // unwrap the TcpStream and flush the buffer + /// let stream = buffer.into_inner().unwrap(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(mut self) -> Result>> { + match self.flush_buf() { + Err(e) => Err(IntoInnerError(self, e)), +@@ -466,7 +449,6 @@ impl BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for BufWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.buf.len() + buf.len() > self.buf.capacity() { +@@ -486,7 +468,6 @@ impl Write for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufWriter") +@@ -496,7 +477,6 @@ impl fmt::Debug for BufWriter where W: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufWriter { + /// Seek to the offset, in bytes, in the underlying writer. + /// +@@ -506,7 +486,6 @@ impl Seek for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Drop for BufWriter { + fn drop(&mut self) { + if self.inner.is_some() && !self.panicked { +@@ -545,7 +524,6 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn error(&self) -> &Error { &self.1 } + + /// Returns the buffered writer instance which generated the error. +@@ -578,23 +556,13 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> W { self.0 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl From> for Error { + fn from(iie: IntoInnerError) -> Error { iie.1 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for IntoInnerError { +- fn description(&self) -> &str { +- error::Error::description(self.error()) +- } +-} +- +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for IntoInnerError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.error().fmt(f) +@@ -649,7 +617,6 @@ impl fmt::Display for IntoInnerError { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct LineWriter { + inner: BufWriter, + } +@@ -669,7 +636,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> LineWriter { + // Lines typically aren't that long, don't use a giant buffer + LineWriter::with_capacity(1024, inner) +@@ -690,7 +656,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> LineWriter { + LineWriter { inner: BufWriter::with_capacity(cap, inner) } + } +@@ -711,7 +676,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.get_ref() } + + /// Gets a mutable reference to the underlying writer. +@@ -734,7 +698,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.get_mut() } + + /// Unwraps this `LineWriter`, returning the underlying writer. +@@ -756,7 +719,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> Result>> { + self.inner.into_inner().map_err(|IntoInnerError(buf, e)| { + IntoInnerError(LineWriter { inner: buf }, e) +@@ -764,7 +726,6 @@ impl LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for LineWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + match memchr::memrchr(b'\n', buf) { +@@ -783,7 +744,6 @@ impl Write for LineWriter { + fn flush(&mut self) -> io::Result<()> { self.inner.flush() } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for LineWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("LineWriter") +diff --git a/cursor.rs b/cursor.rs +index 1b50233..6a7b44f 100644 +--- a/cursor.rs ++++ b/cursor.rs +@@ -8,10 +8,11 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + ++use core::prelude::v1::*; + use io::prelude::*; + +-use core::convert::TryInto; +-use cmp; ++#[cfg(feature = "collections")] use core::convert::TryInto; ++use core::cmp; + use io::{self, SeekFrom, Error, ErrorKind}; + + /// A `Cursor` wraps another type and provides it with a +@@ -79,7 +80,6 @@ use io::{self, SeekFrom, Error, ErrorKind}; + /// assert_eq!(&buff.get_ref()[5..15], &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]); + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Clone, Debug)] + pub struct Cursor { + inner: T, +@@ -98,7 +98,6 @@ impl Cursor { + /// # fn force_inference(_: &Cursor>) {} + /// # force_inference(&buff); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: T) -> Cursor { + Cursor { pos: 0, inner: inner } + } +@@ -116,7 +115,6 @@ impl Cursor { + /// + /// let vec = buff.into_inner(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> T { self.inner } + + /// Gets a reference to the underlying value in this cursor. +@@ -132,7 +130,6 @@ impl Cursor { + /// + /// let reference = buff.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &T { &self.inner } + + /// Gets a mutable reference to the underlying value in this cursor. +@@ -151,7 +148,6 @@ impl Cursor { + /// + /// let reference = buff.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut T { &mut self.inner } + + /// Returns the current position of this cursor. +@@ -173,7 +169,6 @@ impl Cursor { + /// buff.seek(SeekFrom::Current(-1)).unwrap(); + /// assert_eq!(buff.position(), 1); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn position(&self) -> u64 { self.pos } + + /// Sets the position of this cursor. +@@ -193,11 +188,9 @@ impl Cursor { + /// buff.set_position(4); + /// assert_eq!(buff.position(), 4); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn set_position(&mut self, pos: u64) { self.pos = pos; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl io::Seek for Cursor where T: AsRef<[u8]> { + fn seek(&mut self, style: SeekFrom) -> io::Result { + let pos = match style { +@@ -216,25 +209,27 @@ impl io::Seek for Cursor where T: AsRef<[u8]> { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Cursor where T: AsRef<[u8]> { + fn read(&mut self, buf: &mut [u8]) -> io::Result { +- let n = Read::read(&mut self.fill_buf()?, buf)?; ++ let n = Read::read(&mut self.get_buf()?, buf)?; + self.pos += n as u64; + Ok(n) + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl BufRead for Cursor where T: AsRef<[u8]> { +- fn fill_buf(&mut self) -> io::Result<&[u8]> { ++impl Cursor where T: AsRef<[u8]> { ++ fn get_buf(&mut self) -> io::Result<&[u8]> { + let amt = cmp::min(self.pos, self.inner.as_ref().len() as u64); + Ok(&self.inner.as_ref()[(amt as usize)..]) + } ++} ++ ++#[cfg(feature = "collections")] ++impl BufRead for Cursor where T: AsRef<[u8]> { ++ fn fill_buf(&mut self) -> io::Result<&[u8]> { self.get_buf() } + fn consume(&mut self, amt: usize) { self.pos += amt as u64; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for Cursor<&'a mut [u8]> { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -246,7 +241,7 @@ impl<'a> Write for Cursor<&'a mut [u8]> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature = "collections")] + impl Write for Cursor> { + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos: usize = self.position().try_into().map_err(|_| { +@@ -276,8 +271,8 @@ impl Write for Cursor> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "cursor_box_slice", since = "1.5.0")] +-impl Write for Cursor> { ++#[cfg(feature = "alloc")] ++impl Write for Cursor<::alloc::boxed::Box<[u8]>> { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos = cmp::min(self.pos, self.inner.len() as u64); +diff --git a/error.rs b/error.rs +index 795c89c..9a11eee 100644 +--- a/error.rs ++++ b/error.rs +@@ -8,11 +8,16 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use error; +-use fmt; +-use result; +-use sys; +-use convert::From; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++#[cfg(not(feature="alloc"))] use ::FakeBox as Box; ++use core::convert::Into; ++use core::fmt; ++use core::marker::{Send, Sync}; ++use core::option::Option::{self, Some, None}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(not(feature="collections"))] use ::ErrorString as String; ++use core::convert::From; + + /// A specialized [`Result`](../result/enum.Result.html) type for I/O + /// operations. +@@ -44,7 +49,6 @@ use convert::From; + /// Ok(buffer) + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub type Result = result::Result; + + /// The error type for I/O operations of the `Read`, `Write`, `Seek`, and +@@ -56,7 +60,6 @@ pub type Result = result::Result; + /// + /// [`ErrorKind`]: enum.ErrorKind.html + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Error { + repr: Repr, + } +@@ -64,13 +67,16 @@ pub struct Error { + enum Repr { + Os(i32), + Simple(ErrorKind), ++ #[cfg(feature="alloc")] + Custom(Box), ++ #[cfg(not(feature="alloc"))] ++ Custom(Custom), + } + + #[derive(Debug)] + struct Custom { + kind: ErrorKind, +- error: Box, ++ error: String, + } + + /// A list specifying general categories of I/O error. +@@ -82,47 +88,34 @@ struct Custom { + /// + /// [`io::Error`]: struct.Error.html + #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)] +-#[stable(feature = "rust1", since = "1.0.0")] + #[allow(deprecated)] + pub enum ErrorKind { + /// An entity was not found, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + NotFound, + /// The operation lacked the necessary privileges to complete. +- #[stable(feature = "rust1", since = "1.0.0")] + PermissionDenied, + /// The connection was refused by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionRefused, + /// The connection was reset by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionReset, + /// The connection was aborted (terminated) by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionAborted, + /// The network operation failed because it was not connected yet. +- #[stable(feature = "rust1", since = "1.0.0")] + NotConnected, + /// A socket address could not be bound because the address is already in + /// use elsewhere. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrInUse, + /// A nonexistent interface was requested or the requested address was not + /// local. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrNotAvailable, + /// The operation failed because a pipe was closed. +- #[stable(feature = "rust1", since = "1.0.0")] + BrokenPipe, + /// An entity already exists, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + AlreadyExists, + /// The operation needs to block to complete, but the blocking operation was + /// requested to not occur. +- #[stable(feature = "rust1", since = "1.0.0")] + WouldBlock, + /// A parameter was incorrect. +- #[stable(feature = "rust1", since = "1.0.0")] + InvalidInput, + /// Data not valid for the operation were encountered. + /// +@@ -134,10 +127,8 @@ pub enum ErrorKind { + /// `InvalidData` if the file's contents are not valid UTF-8. + /// + /// [`InvalidInput`]: #variant.InvalidInput +- #[stable(feature = "io_invalid_data", since = "1.2.0")] + InvalidData, + /// The I/O operation's timeout expired, causing it to be canceled. +- #[stable(feature = "rust1", since = "1.0.0")] + TimedOut, + /// An error returned when an operation could not be completed because a + /// call to [`write()`] returned [`Ok(0)`]. +@@ -148,15 +139,12 @@ pub enum ErrorKind { + /// + /// [`write()`]: ../../std/io/trait.Write.html#tymethod.write + /// [`Ok(0)`]: ../../std/io/type.Result.html +- #[stable(feature = "rust1", since = "1.0.0")] + WriteZero, + /// This operation was interrupted. + /// + /// Interrupted operations can typically be retried. +- #[stable(feature = "rust1", since = "1.0.0")] + Interrupted, + /// Any I/O error not part of this list. +- #[stable(feature = "rust1", since = "1.0.0")] + Other, + + /// An error returned when an operation could not be completed because an +@@ -165,15 +153,10 @@ pub enum ErrorKind { + /// This typically means that an operation could only succeed if it read a + /// particular number of bytes but only a smaller number of bytes could be + /// read. +- #[stable(feature = "read_exact", since = "1.6.0")] + UnexpectedEof, + + /// A marker variant that tells the compiler that users of this enum cannot + /// match it exhaustively. +- #[unstable(feature = "io_error_internals", +- reason = "better expressed through extensible enums that this \ +- enum cannot be exhaustively matched against", +- issue = "0")] + #[doc(hidden)] + __Nonexhaustive, + } +@@ -206,7 +189,6 @@ impl ErrorKind { + + /// Intended for use for errors not exposed to the user, where allocating onto + /// the heap (for normal construction via Error::new) is too costly. +-#[stable(feature = "io_error_from_errorkind", since = "1.14.0")] + impl From for Error { + fn from(kind: ErrorKind) -> Error { + Error { +@@ -234,14 +216,13 @@ impl Error { + /// // errors can also be created from other errors + /// let custom_error2 = Error::new(ErrorKind::Interrupted, custom_error); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(kind: ErrorKind, error: E) -> Error +- where E: Into> ++ where E: Into + { + Self::_new(kind, error.into()) + } + +- fn _new(kind: ErrorKind, error: Box) -> Error { ++ fn _new(kind: ErrorKind, error: String) -> Error { + Error { + repr: Repr::Custom(Box::new(Custom { + kind: kind, +@@ -250,24 +231,6 @@ impl Error { + } + } + +- /// Returns an error representing the last OS error which occurred. +- /// +- /// This function reads the value of `errno` for the target platform (e.g. +- /// `GetLastError` on Windows) and will return a corresponding instance of +- /// `Error` for the error code. +- /// +- /// # Examples +- /// +- /// ``` +- /// use std::io::Error; +- /// +- /// println!("last OS error: {:?}", Error::last_os_error()); +- /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] +- pub fn last_os_error() -> Error { +- Error::from_raw_os_error(sys::os::errno() as i32) +- } +- + /// Creates a new instance of an `Error` from a particular OS error code. + /// + /// # Examples +@@ -293,7 +256,6 @@ impl Error { + /// assert_eq!(error.kind(), io::ErrorKind::AddrInUse); + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn from_raw_os_error(code: i32) -> Error { + Error { repr: Repr::Os(code) } + } +@@ -324,7 +286,6 @@ impl Error { + /// print_os_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn raw_os_error(&self) -> Option { + match self.repr { + Repr::Os(i) => Some(i), +@@ -358,12 +319,11 @@ impl Error { + /// print_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_ref(&self) -> Option<&(error::Error+Send+Sync+'static)> { ++ pub fn get_ref(&self) -> Option<&String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref c) => Some(&*c.error), ++ Repr::Custom(ref c) => Some(&c.error), + } + } + +@@ -429,12 +389,11 @@ impl Error { + /// print_error(&change_error(Error::new(ErrorKind::Other, MyError::new()))); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_mut(&mut self) -> Option<&mut (error::Error+Send+Sync+'static)> { ++ pub fn get_mut(&mut self) -> Option<&mut String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref mut c) => Some(&mut *c.error), ++ Repr::Custom(ref mut c) => Some(&mut c.error), + } + } + +@@ -463,8 +422,7 @@ impl Error { + /// print_error(Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn into_inner(self) -> Option> { ++ pub fn into_inner(self) -> Option { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +@@ -490,10 +448,9 @@ impl Error { + /// print_error(Error::new(ErrorKind::AddrInUse, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn kind(&self) -> ErrorKind { + match self.repr { +- Repr::Os(code) => sys::decode_error_kind(code), ++ Repr::Os(_code) => ErrorKind::Other, + Repr::Custom(ref c) => c.kind, + Repr::Simple(kind) => kind, + } +@@ -504,21 +461,18 @@ impl fmt::Debug for Repr { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match *self { + Repr::Os(ref code) => +- fmt.debug_struct("Os").field("code", code) +- .field("message", &sys::os::error_string(*code)).finish(), ++ fmt.debug_struct("Os").field("code", code).finish(), + Repr::Custom(ref c) => fmt.debug_tuple("Custom").field(c).finish(), + Repr::Simple(kind) => fmt.debug_tuple("Kind").field(&kind).finish(), + } + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for Error { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match self.repr { + Repr::Os(code) => { +- let detail = sys::os::error_string(code); +- write!(fmt, "{} (os error {})", detail, code) ++ write!(fmt, "os error {}", code) + } + Repr::Custom(ref c) => c.error.fmt(fmt), + Repr::Simple(kind) => write!(fmt, "{}", kind.as_str()), +@@ -526,24 +480,6 @@ impl fmt::Display for Error { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for Error { +- fn description(&self) -> &str { +- match self.repr { +- Repr::Os(..) | Repr::Simple(..) => self.kind().as_str(), +- Repr::Custom(ref c) => c.error.description(), +- } +- } +- +- fn cause(&self) -> Option<&error::Error> { +- match self.repr { +- Repr::Os(..) => None, +- Repr::Simple(..) => None, +- Repr::Custom(ref c) => c.error.cause(), +- } +- } +-} +- + fn _assert_error_is_sync_send() { + fn _is_sync_send() {} + _is_sync_send::(); +diff --git a/impls.rs b/impls.rs +index 6b26c01..0ba399b 100644 +--- a/impls.rs ++++ b/impls.rs +@@ -8,26 +8,31 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use cmp; +-use io::{self, SeekFrom, Read, Write, Seek, BufRead, Error, ErrorKind}; +-use fmt; +-use mem; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++use core::cmp; ++use io::{self, SeekFrom, Read, Write, Seek, Error, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; ++use core::fmt; ++use core::mem; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(feature="collections")] use collections::vec::Vec; + + // ============================================================================= + // Forwarding implementations + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, R: Read + ?Sized> Read for &'a mut R { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -38,7 +43,6 @@ impl<'a, R: Read + ?Sized> Read for &'a mut R { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, W: Write + ?Sized> Write for &'a mut W { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -56,12 +60,11 @@ impl<'a, W: Write + ?Sized> Write for &'a mut W { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, S: Seek + ?Sized> Seek for &'a mut S { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -80,18 +83,20 @@ impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Read for Box { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -102,7 +107,7 @@ impl Read for Box { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Write for Box { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -120,12 +125,12 @@ impl Write for Box { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Seek for Box { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Box { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -151,7 +156,6 @@ impl BufRead for Box { + /// + /// Note that reading updates the slice to point to the yet unread part. + /// The slice will be empty when EOF is reached. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Read for &'a [u8] { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { +@@ -175,7 +179,7 @@ impl<'a> Read for &'a [u8] { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a> BufRead for &'a [u8] { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(*self) } +@@ -189,7 +193,6 @@ impl<'a> BufRead for &'a [u8] { + /// + /// Note that writing updates the slice to point to the yet unwritten part. + /// The slice will be empty when it has been completely overwritten. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for &'a mut [u8] { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -215,7 +218,7 @@ impl<'a> Write for &'a mut [u8] { + + /// Write is implemented for `Vec` by appending to the vector. + /// The vector will grow as needed. +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Write for Vec { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { +diff --git a/memchr.rs b/memchr.rs +index 3824a5f..312cf47 100644 +--- a/memchr.rs ++++ b/memchr.rs +@@ -11,10 +11,12 @@ + // Original implementation taken from rust-memchr + // Copyright 2015 Andrew Gallant, bluss and Nicolas Koch + ++pub use self::fallback::{memchr,memrchr}; ++ + #[allow(dead_code)] + pub mod fallback { +- use cmp; +- use mem; ++ use core::cmp; ++ use core::mem; + + const LO_U64: u64 = 0x0101010101010101; + const HI_U64: u64 = 0x8080808080808080; +diff --git a/mod.rs b/mod.rs +index ad9ae56..77d9ff1 100644 +--- a/mod.rs ++++ b/mod.rs +@@ -253,44 +253,34 @@ + //! [`try!`]: ../macro.try.html + //! [`read()`]: trait.Read.html#tymethod.read + +-#![stable(feature = "rust1", since = "1.0.0")] +- +-use cmp; ++use core::cmp; + use rustc_unicode::str as core_str; +-use error as std_error; +-use fmt; +-use result; +-use str; +-use memchr; +- +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::{BufReader, BufWriter, LineWriter}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::IntoInnerError; +-#[stable(feature = "rust1", since = "1.0.0")] ++use core::fmt; ++use core::iter::{Iterator}; ++use core::marker::Sized; ++#[cfg(feature="collections")] use core::ops::{Drop, FnOnce}; ++use core::option::Option::{self, Some, None}; ++use core::result::Result::{Ok, Err}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++use core::str; ++#[cfg(feature="collections")] use collections::vec::Vec; ++mod memchr; ++ ++#[cfg(feature="collections")] pub use self::buffered::{BufReader, BufWriter, LineWriter}; ++#[cfg(feature="collections")] pub use self::buffered::IntoInnerError; + pub use self::cursor::Cursor; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::error::{Result, Error, ErrorKind}; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::util::{copy, sink, Sink, empty, Empty, repeat, Repeat}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{stdin, stdout, stderr, _print, Stdin, Stdout, Stderr}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{StdoutLock, StderrLock, StdinLock}; +-#[unstable(feature = "libstd_io_internals", issue = "0")] +-#[doc(no_inline, hidden)] +-pub use self::stdio::{set_panic, set_print}; + + pub mod prelude; +-mod buffered; ++#[cfg(feature="collections")] mod buffered; + mod cursor; + mod error; + mod impls; +-mod lazy; + mod util; +-mod stdio; + +-const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; ++const DEFAULT_BUF_SIZE: usize = 8 * 1024; + + // A few methods below (read_to_string, read_line) will append data into a + // `String` buffer, but we need to be pretty careful when doing this. The +@@ -310,6 +300,7 @@ const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; + // 2. We're passing a raw buffer to the function `f`, and it is expected that + // the function only *appends* bytes to the buffer. We'll get undefined + // behavior if existing bytes are overwritten to have non-UTF-8 data. ++#[cfg(feature="collections")] + fn append_to_string(buf: &mut String, f: F) -> Result + where F: FnOnce(&mut Vec) -> Result + { +@@ -341,6 +332,7 @@ fn append_to_string(buf: &mut String, f: F) -> Result + // of data to return. Simply tacking on an extra DEFAULT_BUF_SIZE space every + // time is 4,500 times (!) slower than this if the reader has a very small + // amount of data to return. ++#[cfg(feature="collections")] + fn read_to_end(r: &mut R, buf: &mut Vec) -> Result { + let start_len = buf.len(); + let mut len = start_len; +@@ -423,7 +415,6 @@ fn read_to_end(r: &mut R, buf: &mut Vec) -> Result + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Read { + /// Pull some bytes from this source into the specified buffer, returning + /// how many bytes were read. +@@ -473,7 +464,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read(&mut self, buf: &mut [u8]) -> Result; + + /// Read all bytes until EOF in this source, placing them into `buf`. +@@ -515,7 +505,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_end(&mut self, buf: &mut Vec) -> Result { + read_to_end(self, buf) + } +@@ -553,7 +543,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_string(&mut self, buf: &mut String) -> Result { + // Note that we do *not* call `.read_to_end()` here. We are passing + // `&mut Vec` (the raw contents of `buf`) into the `read_to_end` +@@ -614,7 +604,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "read_exact", since = "1.6.0")] + fn read_exact(&mut self, mut buf: &mut [u8]) -> Result<()> { + while !buf.is_empty() { + match self.read(buf) { +@@ -666,7 +655,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + + /// Transforms this `Read` instance to an `Iterator` over its bytes. +@@ -696,7 +684,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn bytes(self) -> Bytes where Self: Sized { + Bytes { inner: self } + } +@@ -733,10 +720,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[unstable(feature = "io", reason = "the semantics of a partial read/write \ +- of where errors happen is currently \ +- unclear and may change", +- issue = "27802")] + fn chars(self) -> Chars where Self: Sized { + Chars { inner: self } + } +@@ -771,7 +754,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn chain(self, next: R) -> Chain where Self: Sized { + Chain { first: self, second: next, done_first: false } + } +@@ -805,7 +787,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn take(self, limit: u64) -> Take where Self: Sized { + Take { inner: self, limit: limit } + } +@@ -845,7 +826,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Write { + /// Write a buffer into this object, returning how many bytes were written. + /// +@@ -885,7 +865,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write(&mut self, buf: &[u8]) -> Result; + + /// Flush this output stream, ensuring that all intermediately buffered +@@ -911,7 +890,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn flush(&mut self) -> Result<()>; + + /// Attempts to write an entire buffer into this write. +@@ -938,7 +916,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_all(&mut self, mut buf: &[u8]) -> Result<()> { + while !buf.is_empty() { + match self.write(buf) { +@@ -990,7 +967,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_fmt(&mut self, fmt: fmt::Arguments) -> Result<()> { + // Create a shim which translates a Write to a fmt::Write and saves + // off I/O errors. instead of discarding them +@@ -1046,7 +1022,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + } + +@@ -1076,7 +1051,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Seek { + /// Seek to an offset, in bytes, in a stream. + /// +@@ -1092,7 +1066,6 @@ pub trait Seek { + /// Seeking to a negative offset is considered an error. + /// + /// [`SeekFrom::Start`]: enum.SeekFrom.html#variant.Start +- #[stable(feature = "rust1", since = "1.0.0")] + fn seek(&mut self, pos: SeekFrom) -> Result; + } + +@@ -1102,29 +1075,26 @@ pub trait Seek { + /// + /// [`Seek`]: trait.Seek.html + #[derive(Copy, PartialEq, Eq, Clone, Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub enum SeekFrom { + /// Set the offset to the provided number of bytes. +- #[stable(feature = "rust1", since = "1.0.0")] +- Start(#[stable(feature = "rust1", since = "1.0.0")] u64), ++ Start(u64), + + /// Set the offset to the size of this object plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- End(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ End(i64), + + /// Set the offset to the current position plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- Current(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ Current(i64), + } + ++#[cfg(feature="collections")] + fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + -> Result { + let mut read = 0; +@@ -1204,7 +1174,7 @@ fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + /// # } + /// ``` + /// +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub trait BufRead: Read { + /// Fills the internal buffer of this object, returning the buffer contents. + /// +@@ -1249,7 +1219,6 @@ pub trait BufRead: Read { + /// // ensure the bytes we worked with aren't returned again later + /// stdin.consume(length); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn fill_buf(&mut self) -> Result<&[u8]>; + + /// Tells this buffer that `amt` bytes have been consumed from the buffer, +@@ -1271,7 +1240,6 @@ pub trait BufRead: Read { + /// that method's example includes an example of `consume()`. + /// + /// [`fill_buf()`]: #tymethod.fill_buf +- #[stable(feature = "rust1", since = "1.0.0")] + fn consume(&mut self, amt: usize); + + /// Read all bytes into `buf` until the delimiter `byte` or EOF is reached. +@@ -1313,7 +1281,6 @@ pub trait BufRead: Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_until(&mut self, byte: u8, buf: &mut Vec) -> Result { + read_until(self, byte, buf) + } +@@ -1360,7 +1327,6 @@ pub trait BufRead: Read { + /// buffer.clear(); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_line(&mut self, buf: &mut String) -> Result { + // Note that we are not calling the `.read_until` method here, but + // rather our hardcoded implementation. For more details as to why, see +@@ -1397,7 +1363,6 @@ pub trait BufRead: Read { + /// println!("{:?}", content.unwrap()); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn split(self, byte: u8) -> Split where Self: Sized { + Split { buf: self, delim: byte } + } +@@ -1425,7 +1390,6 @@ pub trait BufRead: Read { + /// println!("{}", line.unwrap()); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn lines(self) -> Lines where Self: Sized { + Lines { buf: self } + } +@@ -1437,14 +1401,12 @@ pub trait BufRead: Read { + /// Please see the documentation of [`chain()`] for more details. + /// + /// [`chain()`]: trait.Read.html#method.chain +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Chain { + first: T, + second: U, + done_first: bool, + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Chain { + fn read(&mut self, buf: &mut [u8]) -> Result { + if !self.done_first { +@@ -1457,7 +1419,7 @@ impl Read for Chain { + } + } + +-#[stable(feature = "chain_bufread", since = "1.9.0")] ++#[cfg(feature="collections")] + impl BufRead for Chain { + fn fill_buf(&mut self) -> Result<&[u8]> { + if !self.done_first { +@@ -1484,7 +1446,6 @@ impl BufRead for Chain { + /// Please see the documentation of [`take()`] for more details. + /// + /// [`take()`]: trait.Read.html#method.take +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Take { + inner: T, + limit: u64, +@@ -1518,7 +1479,6 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn limit(&self) -> u64 { self.limit } + + /// Consumes the `Take`, returning the wrapped reader. +@@ -1543,13 +1503,11 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[unstable(feature = "io_take_into_inner", issue = "23755")] + pub fn into_inner(self) -> T { + self.inner + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Take { + fn read(&mut self, buf: &mut [u8]) -> Result { + // Don't call into inner reader at all at EOF because it may still block +@@ -1564,7 +1522,7 @@ impl Read for Take { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Take { + fn fill_buf(&mut self) -> Result<&[u8]> { + // Don't call into inner reader at all at EOF because it may still block +@@ -1603,12 +1561,10 @@ fn read_one_byte(reader: &mut Read) -> Option> { + /// Please see the documentation of [`bytes()`] for more details. + /// + /// [`bytes()`]: trait.Read.html#method.bytes +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Bytes { + inner: R, + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Iterator for Bytes { + type Item = Result; + +@@ -1623,8 +1579,6 @@ impl Iterator for Bytes { + /// Please see the documentation of `chars()` for more details. + /// + /// [chars]: trait.Read.html#method.chars +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + pub struct Chars { + inner: R, + } +@@ -1632,8 +1586,6 @@ pub struct Chars { + /// An enumeration of possible errors that can be generated from the `Chars` + /// adapter. + #[derive(Debug)] +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + pub enum CharsError { + /// Variant representing that the underlying stream was read successfully + /// but it did not contain valid utf8 data. +@@ -1643,8 +1595,6 @@ pub enum CharsError { + Other(Error), + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl Iterator for Chars { + type Item = result::Result; + +@@ -1676,25 +1626,6 @@ impl Iterator for Chars { + } + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] +-impl std_error::Error for CharsError { +- fn description(&self) -> &str { +- match *self { +- CharsError::NotUtf8 => "invalid utf8 encoding", +- CharsError::Other(ref e) => std_error::Error::description(e), +- } +- } +- fn cause(&self) -> Option<&std_error::Error> { +- match *self { +- CharsError::NotUtf8 => None, +- CharsError::Other(ref e) => e.cause(), +- } +- } +-} +- +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl fmt::Display for CharsError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + match *self { +@@ -1713,13 +1644,13 @@ impl fmt::Display for CharsError { + /// `BufRead`. Please see the documentation of `split()` for more details. + /// + /// [split]: trait.BufRead.html#method.split +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub struct Split { + buf: B, + delim: u8, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Split { + type Item = Result>; + +@@ -1744,12 +1675,12 @@ impl Iterator for Split { + /// `BufRead`. Please see the documentation of `lines()` for more details. + /// + /// [lines]: trait.BufRead.html#method.lines +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub struct Lines { + buf: B, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Lines { + type Item = Result; + +diff --git a/prelude.rs b/prelude.rs +index 8772d0f..49d66c9 100644 +--- a/prelude.rs ++++ b/prelude.rs +@@ -18,7 +18,8 @@ + //! use std::io::prelude::*; + //! ``` + +-#![stable(feature = "rust1", since = "1.0.0")] ++pub use super::{Read, Write, Seek}; ++#[cfg(feature="collections")] pub use super::BufRead; + +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use super::{Read, Write, BufRead, Seek}; ++#[cfg(feature="collections")] pub use alloc::boxed::Box; ++#[cfg(feature="collections")] pub use collections::vec::Vec; +diff --git a/util.rs b/util.rs +index 2c68802..93bcfc3 100644 +--- a/util.rs ++++ b/util.rs +@@ -10,7 +10,8 @@ + + #![allow(missing_copy_implementations)] + +-use io::{self, Read, Write, ErrorKind, BufRead}; ++use io::{self, Read, Write, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; + + /// Copies the entire contents of a reader into a writer. + /// +@@ -42,7 +43,6 @@ use io::{self, Read, Write, ErrorKind, BufRead}; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn copy(reader: &mut R, writer: &mut W) -> io::Result + where R: Read, W: Write + { +@@ -66,7 +66,6 @@ pub fn copy(reader: &mut R, writer: &mut W) -> io::Result< + /// the documentation of `empty()` for more details. + /// + /// [empty]: fn.empty.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Empty { _priv: () } + + /// Constructs a new handle to an empty reader. +@@ -84,14 +83,12 @@ pub struct Empty { _priv: () } + /// io::empty().read_to_string(&mut buffer).unwrap(); + /// assert!(buffer.is_empty()); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn empty() -> Empty { Empty { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Empty { + fn read(&mut self, _buf: &mut [u8]) -> io::Result { Ok(0) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Empty { + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(&[]) } + fn consume(&mut self, _n: usize) {} +@@ -103,7 +100,6 @@ impl BufRead for Empty { + /// see the documentation of `repeat()` for more details. + /// + /// [repeat]: fn.repeat.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Repeat { byte: u8 } + + /// Creates an instance of a reader that infinitely repeats one byte. +@@ -120,10 +116,8 @@ pub struct Repeat { byte: u8 } + /// io::repeat(0b101).read_exact(&mut buffer).unwrap(); + /// assert_eq!(buffer, [0b101, 0b101, 0b101]); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn repeat(byte: u8) -> Repeat { Repeat { byte: byte } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Repeat { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + for slot in &mut *buf { +@@ -139,7 +133,6 @@ impl Read for Repeat { + /// see the documentation of `sink()` for more details. + /// + /// [sink]: fn.sink.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Sink { _priv: () } + + /// Creates an instance of a writer which will successfully consume all data. +@@ -156,10 +149,8 @@ pub struct Sink { _priv: () } + /// let num_bytes = io::sink().write(&buffer).unwrap(); + /// assert_eq!(num_bytes, 5); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn sink() -> Sink { Sink { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for Sink { + fn write(&mut self, buf: &[u8]) -> io::Result { Ok(buf.len()) } + fn flush(&mut self) -> io::Result<()> { Ok(()) } diff --git a/patches/e593c3b89343a98bdcc76ce9f5869ff18882dfff.patch b/patches/e593c3b89343a98bdcc76ce9f5869ff18882dfff.patch new file mode 100644 index 0000000..7adfe3d --- /dev/null +++ b/patches/e593c3b89343a98bdcc76ce9f5869ff18882dfff.patch @@ -0,0 +1,1477 @@ +diff --git a/buffered.rs b/buffered.rs +index 44dd4e9..20ab840 100644 +--- a/buffered.rs ++++ b/buffered.rs +@@ -10,13 +10,13 @@ + + //! Buffering wrappers for I/O traits + ++use core::prelude::v1::*; + use io::prelude::*; + +-use cmp; +-use error; +-use fmt; ++use core::cmp; ++use core::fmt; + use io::{self, DEFAULT_BUF_SIZE, Error, ErrorKind, SeekFrom}; +-use memchr; ++use io::memchr; + + /// The `BufReader` struct adds buffering to any reader. + /// +@@ -46,7 +46,6 @@ use memchr; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufReader { + inner: R, + buf: Box<[u8]>, +@@ -69,7 +68,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: R) -> BufReader { + BufReader::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -90,7 +88,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: R) -> BufReader { + BufReader { + inner: inner, +@@ -118,7 +115,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &R { &self.inner } + + /// Gets a mutable reference to the underlying reader. +@@ -139,7 +135,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut R { &mut self.inner } + + /// Unwraps this `BufReader`, returning the underlying reader. +@@ -160,11 +155,9 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> R { self.inner } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for BufReader { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + // If we don't have any buffered data and we're doing a massive read +@@ -182,7 +175,6 @@ impl Read for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl BufRead for BufReader { + fn fill_buf(&mut self) -> io::Result<&[u8]> { + // If we've reached the end of our internal buffer then we need to fetch +@@ -199,7 +191,6 @@ impl BufRead for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufReader where R: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufReader") +@@ -209,7 +200,6 @@ impl fmt::Debug for BufReader where R: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufReader { + /// Seek to an offset, in bytes, in the underlying reader. + /// +@@ -302,7 +292,6 @@ impl Seek for BufReader { + /// [`Write`]: ../../std/io/trait.Write.html + /// [`write`]: ../../std/net/struct.TcpStream.html#method.write + /// [`TcpStream`]: ../../std/net/struct.TcpStream.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufWriter { + inner: Option, + buf: Vec, +@@ -337,7 +326,6 @@ pub struct BufWriter { + /// }; + /// ``` + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct IntoInnerError(W, Error); + + impl BufWriter { +@@ -351,7 +339,6 @@ impl BufWriter { + /// + /// let mut buffer = BufWriter::new(TcpStream::connect("127.0.0.1:34254").unwrap()); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> BufWriter { + BufWriter::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -369,7 +356,6 @@ impl BufWriter { + /// let stream = TcpStream::connect("127.0.0.1:34254").unwrap(); + /// let mut buffer = BufWriter::with_capacity(100, stream); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> BufWriter { + BufWriter { + inner: Some(inner), +@@ -418,7 +404,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.as_ref().unwrap() } + + /// Gets a mutable reference to the underlying writer. +@@ -436,7 +421,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.as_mut().unwrap() } + + /// Unwraps this `BufWriter`, returning the underlying writer. +@@ -454,7 +438,6 @@ impl BufWriter { + /// // unwrap the TcpStream and flush the buffer + /// let stream = buffer.into_inner().unwrap(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(mut self) -> Result>> { + match self.flush_buf() { + Err(e) => Err(IntoInnerError(self, e)), +@@ -463,7 +446,6 @@ impl BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for BufWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.buf.len() + buf.len() > self.buf.capacity() { +@@ -483,7 +465,6 @@ impl Write for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufWriter") +@@ -493,7 +474,6 @@ impl fmt::Debug for BufWriter where W: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufWriter { + /// Seek to the offset, in bytes, in the underlying writer. + /// +@@ -503,7 +483,6 @@ impl Seek for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Drop for BufWriter { + fn drop(&mut self) { + if self.inner.is_some() && !self.panicked { +@@ -542,7 +521,6 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn error(&self) -> &Error { &self.1 } + + /// Returns the buffered writer instance which generated the error. +@@ -575,23 +553,13 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> W { self.0 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl From> for Error { + fn from(iie: IntoInnerError) -> Error { iie.1 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for IntoInnerError { +- fn description(&self) -> &str { +- error::Error::description(self.error()) +- } +-} +- +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for IntoInnerError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.error().fmt(f) +@@ -646,7 +614,6 @@ impl fmt::Display for IntoInnerError { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct LineWriter { + inner: BufWriter, + } +@@ -666,7 +633,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> LineWriter { + // Lines typically aren't that long, don't use a giant buffer + LineWriter::with_capacity(1024, inner) +@@ -687,7 +653,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> LineWriter { + LineWriter { inner: BufWriter::with_capacity(cap, inner) } + } +@@ -708,7 +673,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.get_ref() } + + /// Gets a mutable reference to the underlying writer. +@@ -731,7 +695,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.get_mut() } + + /// Unwraps this `LineWriter`, returning the underlying writer. +@@ -753,7 +716,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> Result>> { + self.inner.into_inner().map_err(|IntoInnerError(buf, e)| { + IntoInnerError(LineWriter { inner: buf }, e) +@@ -761,7 +723,6 @@ impl LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for LineWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + match memchr::memrchr(b'\n', buf) { +@@ -780,7 +741,6 @@ impl Write for LineWriter { + fn flush(&mut self) -> io::Result<()> { self.inner.flush() } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for LineWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("LineWriter") +diff --git a/cursor.rs b/cursor.rs +index cb9e7bd..960a0d6 100644 +--- a/cursor.rs ++++ b/cursor.rs +@@ -8,10 +8,11 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + ++use core::prelude::v1::*; + use io::prelude::*; + +-use core::convert::TryInto; +-use cmp; ++#[cfg(feature = "collections")] use core::convert::TryInto; ++use core::cmp; + use io::{self, SeekFrom, Error, ErrorKind}; + + /// A `Cursor` wraps another type and provides it with a +@@ -79,7 +80,6 @@ use io::{self, SeekFrom, Error, ErrorKind}; + /// assert_eq!(&buff.get_ref()[5..15], &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]); + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Clone, Debug)] + pub struct Cursor { + inner: T, +@@ -98,7 +98,6 @@ impl Cursor { + /// # fn force_inference(_: &Cursor>) {} + /// # force_inference(&buff); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: T) -> Cursor { + Cursor { pos: 0, inner: inner } + } +@@ -116,7 +115,6 @@ impl Cursor { + /// + /// let vec = buff.into_inner(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> T { self.inner } + + /// Gets a reference to the underlying value in this cursor. +@@ -132,7 +130,6 @@ impl Cursor { + /// + /// let reference = buff.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &T { &self.inner } + + /// Gets a mutable reference to the underlying value in this cursor. +@@ -151,7 +148,6 @@ impl Cursor { + /// + /// let reference = buff.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut T { &mut self.inner } + + /// Returns the current position of this cursor. +@@ -173,7 +169,6 @@ impl Cursor { + /// buff.seek(SeekFrom::Current(-1)).unwrap(); + /// assert_eq!(buff.position(), 1); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn position(&self) -> u64 { self.pos } + + /// Sets the position of this cursor. +@@ -193,11 +188,9 @@ impl Cursor { + /// buff.set_position(4); + /// assert_eq!(buff.position(), 4); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn set_position(&mut self, pos: u64) { self.pos = pos; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl io::Seek for Cursor where T: AsRef<[u8]> { + fn seek(&mut self, style: SeekFrom) -> io::Result { + let pos = match style { +@@ -216,25 +209,27 @@ impl io::Seek for Cursor where T: AsRef<[u8]> { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Cursor where T: AsRef<[u8]> { + fn read(&mut self, buf: &mut [u8]) -> io::Result { +- let n = Read::read(&mut self.fill_buf()?, buf)?; ++ let n = Read::read(&mut self.get_buf()?, buf)?; + self.pos += n as u64; + Ok(n) + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl BufRead for Cursor where T: AsRef<[u8]> { +- fn fill_buf(&mut self) -> io::Result<&[u8]> { ++impl Cursor where T: AsRef<[u8]> { ++ fn get_buf(&mut self) -> io::Result<&[u8]> { + let amt = cmp::min(self.pos, self.inner.as_ref().len() as u64); + Ok(&self.inner.as_ref()[(amt as usize)..]) + } ++} ++ ++#[cfg(feature = "collections")] ++impl BufRead for Cursor where T: AsRef<[u8]> { ++ fn fill_buf(&mut self) -> io::Result<&[u8]> { self.get_buf() } + fn consume(&mut self, amt: usize) { self.pos += amt as u64; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for Cursor<&'a mut [u8]> { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -246,7 +241,7 @@ impl<'a> Write for Cursor<&'a mut [u8]> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature = "collections")] + impl Write for Cursor> { + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos: usize = self.position().try_into().map_err(|_| { +@@ -276,8 +271,8 @@ impl Write for Cursor> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "cursor_box_slice", since = "1.5.0")] +-impl Write for Cursor> { ++#[cfg(feature = "alloc")] ++impl Write for Cursor<::alloc::boxed::Box<[u8]>> { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos = cmp::min(self.pos, self.inner.len() as u64); +diff --git a/error.rs b/error.rs +index ddf0030..748b830 100644 +--- a/error.rs ++++ b/error.rs +@@ -8,10 +8,15 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use error; +-use fmt; +-use result; +-use sys; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++#[cfg(not(feature="alloc"))] use ::FakeBox as Box; ++use core::convert::Into; ++use core::fmt; ++use core::marker::{Send, Sync}; ++use core::option::Option::{self, Some, None}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(not(feature="collections"))] use ::ErrorString as String; + + /// A specialized [`Result`](../result/enum.Result.html) type for I/O + /// operations. +@@ -43,7 +48,6 @@ use sys; + /// Ok(buffer) + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub type Result = result::Result; + + /// The error type for I/O operations of the `Read`, `Write`, `Seek`, and +@@ -55,20 +59,22 @@ pub type Result = result::Result; + /// + /// [`ErrorKind`]: enum.ErrorKind.html + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Error { + repr: Repr, + } + + enum Repr { + Os(i32), ++ #[cfg(feature="alloc")] + Custom(Box), ++ #[cfg(not(feature="alloc"))] ++ Custom(Custom), + } + + #[derive(Debug)] + struct Custom { + kind: ErrorKind, +- error: Box, ++ error: String, + } + + /// A list specifying general categories of I/O error. +@@ -80,47 +86,34 @@ struct Custom { + /// + /// [`io::Error`]: struct.Error.html + #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)] +-#[stable(feature = "rust1", since = "1.0.0")] + #[allow(deprecated)] + pub enum ErrorKind { + /// An entity was not found, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + NotFound, + /// The operation lacked the necessary privileges to complete. +- #[stable(feature = "rust1", since = "1.0.0")] + PermissionDenied, + /// The connection was refused by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionRefused, + /// The connection was reset by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionReset, + /// The connection was aborted (terminated) by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionAborted, + /// The network operation failed because it was not connected yet. +- #[stable(feature = "rust1", since = "1.0.0")] + NotConnected, + /// A socket address could not be bound because the address is already in + /// use elsewhere. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrInUse, + /// A nonexistent interface was requested or the requested address was not + /// local. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrNotAvailable, + /// The operation failed because a pipe was closed. +- #[stable(feature = "rust1", since = "1.0.0")] + BrokenPipe, + /// An entity already exists, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + AlreadyExists, + /// The operation needs to block to complete, but the blocking operation was + /// requested to not occur. +- #[stable(feature = "rust1", since = "1.0.0")] + WouldBlock, + /// A parameter was incorrect. +- #[stable(feature = "rust1", since = "1.0.0")] + InvalidInput, + /// Data not valid for the operation were encountered. + /// +@@ -130,10 +123,8 @@ pub enum ErrorKind { + /// + /// For example, a function that reads a file into a string will error with + /// `InvalidData` if the file's contents are not valid UTF-8. +- #[stable(feature = "io_invalid_data", since = "1.2.0")] + InvalidData, + /// The I/O operation's timeout expired, causing it to be canceled. +- #[stable(feature = "rust1", since = "1.0.0")] + TimedOut, + /// An error returned when an operation could not be completed because a + /// call to `write` returned `Ok(0)`. +@@ -141,15 +132,12 @@ pub enum ErrorKind { + /// This typically means that an operation could only succeed if it wrote a + /// particular number of bytes but only a smaller number of bytes could be + /// written. +- #[stable(feature = "rust1", since = "1.0.0")] + WriteZero, + /// This operation was interrupted. + /// + /// Interrupted operations can typically be retried. +- #[stable(feature = "rust1", since = "1.0.0")] + Interrupted, + /// Any I/O error not part of this list. +- #[stable(feature = "rust1", since = "1.0.0")] + Other, + + /// An error returned when an operation could not be completed because an +@@ -158,15 +146,10 @@ pub enum ErrorKind { + /// This typically means that an operation could only succeed if it read a + /// particular number of bytes but only a smaller number of bytes could be + /// read. +- #[stable(feature = "read_exact", since = "1.6.0")] + UnexpectedEof, + + /// A marker variant that tells the compiler that users of this enum cannot + /// match it exhaustively. +- #[unstable(feature = "io_error_internals", +- reason = "better expressed through extensible enums that this \ +- enum cannot be exhaustively matched against", +- issue = "0")] + #[doc(hidden)] + __Nonexhaustive, + } +@@ -190,14 +173,13 @@ impl Error { + /// // errors can also be created from other errors + /// let custom_error2 = Error::new(ErrorKind::Interrupted, custom_error); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(kind: ErrorKind, error: E) -> Error +- where E: Into> ++ where E: Into + { + Self::_new(kind, error.into()) + } + +- fn _new(kind: ErrorKind, error: Box) -> Error { ++ fn _new(kind: ErrorKind, error: String) -> Error { + Error { + repr: Repr::Custom(Box::new(Custom { + kind: kind, +@@ -206,24 +188,6 @@ impl Error { + } + } + +- /// Returns an error representing the last OS error which occurred. +- /// +- /// This function reads the value of `errno` for the target platform (e.g. +- /// `GetLastError` on Windows) and will return a corresponding instance of +- /// `Error` for the error code. +- /// +- /// # Examples +- /// +- /// ``` +- /// use std::io::Error; +- /// +- /// println!("last OS error: {:?}", Error::last_os_error()); +- /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] +- pub fn last_os_error() -> Error { +- Error::from_raw_os_error(sys::os::errno() as i32) +- } +- + /// Creates a new instance of an `Error` from a particular OS error code. + /// + /// # Examples +@@ -249,7 +213,6 @@ impl Error { + /// assert_eq!(error.kind(), io::ErrorKind::AddrInUse); + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn from_raw_os_error(code: i32) -> Error { + Error { repr: Repr::Os(code) } + } +@@ -280,7 +243,6 @@ impl Error { + /// print_os_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn raw_os_error(&self) -> Option { + match self.repr { + Repr::Os(i) => Some(i), +@@ -313,11 +275,10 @@ impl Error { + /// print_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_ref(&self) -> Option<&(error::Error+Send+Sync+'static)> { ++ pub fn get_ref(&self) -> Option<&String> { + match self.repr { + Repr::Os(..) => None, +- Repr::Custom(ref c) => Some(&*c.error), ++ Repr::Custom(ref c) => Some(&c.error), + } + } + +@@ -383,11 +344,10 @@ impl Error { + /// print_error(&change_error(Error::new(ErrorKind::Other, MyError::new()))); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_mut(&mut self) -> Option<&mut (error::Error+Send+Sync+'static)> { ++ pub fn get_mut(&mut self) -> Option<&mut String> { + match self.repr { + Repr::Os(..) => None, +- Repr::Custom(ref mut c) => Some(&mut *c.error), ++ Repr::Custom(ref mut c) => Some(&mut c.error), + } + } + +@@ -416,8 +376,7 @@ impl Error { + /// print_error(Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn into_inner(self) -> Option> { ++ pub fn into_inner(self) -> Option { + match self.repr { + Repr::Os(..) => None, + Repr::Custom(c) => Some(c.error) +@@ -442,10 +401,9 @@ impl Error { + /// print_error(Error::new(ErrorKind::AddrInUse, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn kind(&self) -> ErrorKind { + match self.repr { +- Repr::Os(code) => sys::decode_error_kind(code), ++ Repr::Os(_code) => ErrorKind::Other, + Repr::Custom(ref c) => c.kind, + } + } +@@ -455,63 +413,23 @@ impl fmt::Debug for Repr { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match *self { + Repr::Os(ref code) => +- fmt.debug_struct("Os").field("code", code) +- .field("message", &sys::os::error_string(*code)).finish(), ++ fmt.debug_struct("Os").field("code", code).finish(), + Repr::Custom(ref c) => fmt.debug_tuple("Custom").field(c).finish(), + } + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for Error { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match self.repr { + Repr::Os(code) => { +- let detail = sys::os::error_string(code); +- write!(fmt, "{} (os error {})", detail, code) ++ write!(fmt, "os error {}", code) + } + Repr::Custom(ref c) => c.error.fmt(fmt), + } + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for Error { +- fn description(&self) -> &str { +- match self.repr { +- Repr::Os(..) => match self.kind() { +- ErrorKind::NotFound => "entity not found", +- ErrorKind::PermissionDenied => "permission denied", +- ErrorKind::ConnectionRefused => "connection refused", +- ErrorKind::ConnectionReset => "connection reset", +- ErrorKind::ConnectionAborted => "connection aborted", +- ErrorKind::NotConnected => "not connected", +- ErrorKind::AddrInUse => "address in use", +- ErrorKind::AddrNotAvailable => "address not available", +- ErrorKind::BrokenPipe => "broken pipe", +- ErrorKind::AlreadyExists => "entity already exists", +- ErrorKind::WouldBlock => "operation would block", +- ErrorKind::InvalidInput => "invalid input parameter", +- ErrorKind::InvalidData => "invalid data", +- ErrorKind::TimedOut => "timed out", +- ErrorKind::WriteZero => "write zero", +- ErrorKind::Interrupted => "operation interrupted", +- ErrorKind::Other => "other os error", +- ErrorKind::UnexpectedEof => "unexpected end of file", +- ErrorKind::__Nonexhaustive => unreachable!() +- }, +- Repr::Custom(ref c) => c.error.description(), +- } +- } +- +- fn cause(&self) -> Option<&error::Error> { +- match self.repr { +- Repr::Os(..) => None, +- Repr::Custom(ref c) => c.error.cause(), +- } +- } +-} +- + fn _assert_error_is_sync_send() { + fn _is_sync_send() {} + _is_sync_send::(); +diff --git a/impls.rs b/impls.rs +index 6b26c01..0ba399b 100644 +--- a/impls.rs ++++ b/impls.rs +@@ -8,26 +8,31 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use cmp; +-use io::{self, SeekFrom, Read, Write, Seek, BufRead, Error, ErrorKind}; +-use fmt; +-use mem; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++use core::cmp; ++use io::{self, SeekFrom, Read, Write, Seek, Error, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; ++use core::fmt; ++use core::mem; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(feature="collections")] use collections::vec::Vec; + + // ============================================================================= + // Forwarding implementations + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, R: Read + ?Sized> Read for &'a mut R { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -38,7 +43,6 @@ impl<'a, R: Read + ?Sized> Read for &'a mut R { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, W: Write + ?Sized> Write for &'a mut W { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -56,12 +60,11 @@ impl<'a, W: Write + ?Sized> Write for &'a mut W { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, S: Seek + ?Sized> Seek for &'a mut S { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -80,18 +83,20 @@ impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Read for Box { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -102,7 +107,7 @@ impl Read for Box { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Write for Box { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -120,12 +125,12 @@ impl Write for Box { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Seek for Box { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Box { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -151,7 +156,6 @@ impl BufRead for Box { + /// + /// Note that reading updates the slice to point to the yet unread part. + /// The slice will be empty when EOF is reached. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Read for &'a [u8] { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { +@@ -175,7 +179,7 @@ impl<'a> Read for &'a [u8] { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a> BufRead for &'a [u8] { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(*self) } +@@ -189,7 +193,6 @@ impl<'a> BufRead for &'a [u8] { + /// + /// Note that writing updates the slice to point to the yet unwritten part. + /// The slice will be empty when it has been completely overwritten. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for &'a mut [u8] { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -215,7 +218,7 @@ impl<'a> Write for &'a mut [u8] { + + /// Write is implemented for `Vec` by appending to the vector. + /// The vector will grow as needed. +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Write for Vec { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { +diff --git a/memchr.rs b/memchr.rs +index 3824a5f..312cf47 100644 +--- a/memchr.rs ++++ b/memchr.rs +@@ -11,10 +11,12 @@ + // Original implementation taken from rust-memchr + // Copyright 2015 Andrew Gallant, bluss and Nicolas Koch + ++pub use self::fallback::{memchr,memrchr}; ++ + #[allow(dead_code)] + pub mod fallback { +- use cmp; +- use mem; ++ use core::cmp; ++ use core::mem; + + const LO_U64: u64 = 0x0101010101010101; + const HI_U64: u64 = 0x8080808080808080; +diff --git a/mod.rs b/mod.rs +index 37c3f70..7232bd1 100644 +--- a/mod.rs ++++ b/mod.rs +@@ -252,42 +252,32 @@ + //! [`io::Result`]: type.Result.html + //! [`try!`]: ../macro.try.html + +-#![stable(feature = "rust1", since = "1.0.0")] +- +-use cmp; ++use core::cmp; + use rustc_unicode::str as core_str; +-use error as std_error; +-use fmt; +-use result; +-use str; +-use memchr; +- +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::{BufReader, BufWriter, LineWriter}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::IntoInnerError; +-#[stable(feature = "rust1", since = "1.0.0")] ++use core::fmt; ++use core::iter::{Iterator}; ++use core::marker::Sized; ++#[cfg(feature="collections")] use core::ops::{Drop, FnOnce}; ++use core::option::Option::{self, Some, None}; ++use core::result::Result::{Ok, Err}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++use core::str; ++#[cfg(feature="collections")] use collections::vec::Vec; ++mod memchr; ++ ++#[cfg(feature="collections")] pub use self::buffered::{BufReader, BufWriter, LineWriter}; ++#[cfg(feature="collections")] pub use self::buffered::IntoInnerError; + pub use self::cursor::Cursor; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::error::{Result, Error, ErrorKind}; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::util::{copy, sink, Sink, empty, Empty, repeat, Repeat}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{stdin, stdout, stderr, _print, Stdin, Stdout, Stderr}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{StdoutLock, StderrLock, StdinLock}; +-#[unstable(feature = "libstd_io_internals", issue = "0")] +-#[doc(no_inline, hidden)] +-pub use self::stdio::{set_panic, set_print}; + + pub mod prelude; +-mod buffered; ++#[cfg(feature="collections")] mod buffered; + mod cursor; + mod error; + mod impls; +-mod lazy; + mod util; +-mod stdio; + + const DEFAULT_BUF_SIZE: usize = 8 * 1024; + +@@ -309,6 +299,7 @@ const DEFAULT_BUF_SIZE: usize = 8 * 1024; + // 2. We're passing a raw buffer to the function `f`, and it is expected that + // the function only *appends* bytes to the buffer. We'll get undefined + // behavior if existing bytes are overwritten to have non-UTF-8 data. ++#[cfg(feature="collections")] + fn append_to_string(buf: &mut String, f: F) -> Result + where F: FnOnce(&mut Vec) -> Result + { +@@ -340,6 +331,7 @@ fn append_to_string(buf: &mut String, f: F) -> Result + // of data to return. Simply tacking on an extra DEFAULT_BUF_SIZE space every + // time is 4,500 times (!) slower than this if the reader has a very small + // amount of data to return. ++#[cfg(feature="collections")] + fn read_to_end(r: &mut R, buf: &mut Vec) -> Result { + let start_len = buf.len(); + let mut len = start_len; +@@ -422,7 +414,6 @@ fn read_to_end(r: &mut R, buf: &mut Vec) -> Result + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Read { + /// Pull some bytes from this source into the specified buffer, returning + /// how many bytes were read. +@@ -472,7 +463,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read(&mut self, buf: &mut [u8]) -> Result; + + /// Read all bytes until EOF in this source, placing them into `buf`. +@@ -514,7 +504,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_end(&mut self, buf: &mut Vec) -> Result { + read_to_end(self, buf) + } +@@ -552,7 +542,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_string(&mut self, buf: &mut String) -> Result { + // Note that we do *not* call `.read_to_end()` here. We are passing + // `&mut Vec` (the raw contents of `buf`) into the `read_to_end` +@@ -613,7 +603,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "read_exact", since = "1.6.0")] + fn read_exact(&mut self, mut buf: &mut [u8]) -> Result<()> { + while !buf.is_empty() { + match self.read(buf) { +@@ -665,7 +654,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + + /// Transforms this `Read` instance to an `Iterator` over its bytes. +@@ -695,7 +683,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn bytes(self) -> Bytes where Self: Sized { + Bytes { inner: self } + } +@@ -732,10 +719,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[unstable(feature = "io", reason = "the semantics of a partial read/write \ +- of where errors happen is currently \ +- unclear and may change", +- issue = "27802")] + fn chars(self) -> Chars where Self: Sized { + Chars { inner: self } + } +@@ -770,7 +753,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn chain(self, next: R) -> Chain where Self: Sized { + Chain { first: self, second: next, done_first: false } + } +@@ -804,7 +786,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn take(self, limit: u64) -> Take where Self: Sized { + Take { inner: self, limit: limit } + } +@@ -840,7 +821,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Write { + /// Write a buffer into this object, returning how many bytes were written. + /// +@@ -880,7 +860,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write(&mut self, buf: &[u8]) -> Result; + + /// Flush this output stream, ensuring that all intermediately buffered +@@ -906,7 +885,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn flush(&mut self) -> Result<()>; + + /// Attempts to write an entire buffer into this write. +@@ -933,7 +911,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_all(&mut self, mut buf: &[u8]) -> Result<()> { + while !buf.is_empty() { + match self.write(buf) { +@@ -985,7 +962,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_fmt(&mut self, fmt: fmt::Arguments) -> Result<()> { + // Create a shim which translates a Write to a fmt::Write and saves + // off I/O errors. instead of discarding them +@@ -1041,7 +1017,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + } + +@@ -1071,7 +1046,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Seek { + /// Seek to an offset, in bytes, in a stream. + /// +@@ -1087,7 +1061,6 @@ pub trait Seek { + /// Seeking to a negative offset is considered an error. + /// + /// [`SeekFrom::Start`]: enum.SeekFrom.html#variant.Start +- #[stable(feature = "rust1", since = "1.0.0")] + fn seek(&mut self, pos: SeekFrom) -> Result; + } + +@@ -1097,29 +1070,26 @@ pub trait Seek { + /// + /// [`Seek`]: trait.Seek.html + #[derive(Copy, PartialEq, Eq, Clone, Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub enum SeekFrom { + /// Set the offset to the provided number of bytes. +- #[stable(feature = "rust1", since = "1.0.0")] +- Start(#[stable(feature = "rust1", since = "1.0.0")] u64), ++ Start(u64), + + /// Set the offset to the size of this object plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- End(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ End(i64), + + /// Set the offset to the current position plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- Current(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ Current(i64), + } + ++#[cfg(feature="collections")] + fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + -> Result { + let mut read = 0; +@@ -1199,7 +1169,7 @@ fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + /// # } + /// ``` + /// +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub trait BufRead: Read { + /// Fills the internal buffer of this object, returning the buffer contents. + /// +@@ -1244,7 +1214,6 @@ pub trait BufRead: Read { + /// // ensure the bytes we worked with aren't returned again later + /// stdin.consume(length); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn fill_buf(&mut self) -> Result<&[u8]>; + + /// Tells this buffer that `amt` bytes have been consumed from the buffer, +@@ -1266,7 +1235,6 @@ pub trait BufRead: Read { + /// that method's example includes an example of `consume()`. + /// + /// [`fill_buf()`]: #tymethod.fill_buf +- #[stable(feature = "rust1", since = "1.0.0")] + fn consume(&mut self, amt: usize); + + /// Read all bytes into `buf` until the delimiter `byte` or EOF is reached. +@@ -1308,7 +1276,6 @@ pub trait BufRead: Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_until(&mut self, byte: u8, buf: &mut Vec) -> Result { + read_until(self, byte, buf) + } +@@ -1355,7 +1322,6 @@ pub trait BufRead: Read { + /// buffer.clear(); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_line(&mut self, buf: &mut String) -> Result { + // Note that we are not calling the `.read_until` method here, but + // rather our hardcoded implementation. For more details as to why, see +@@ -1392,7 +1358,6 @@ pub trait BufRead: Read { + /// println!("{:?}", content.unwrap()); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn split(self, byte: u8) -> Split where Self: Sized { + Split { buf: self, delim: byte } + } +@@ -1420,7 +1385,6 @@ pub trait BufRead: Read { + /// println!("{}", line.unwrap()); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn lines(self) -> Lines where Self: Sized { + Lines { buf: self } + } +@@ -1432,14 +1396,12 @@ pub trait BufRead: Read { + /// Please see the documentation of [`chain()`] for more details. + /// + /// [`chain()`]: trait.Read.html#method.chain +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Chain { + first: T, + second: U, + done_first: bool, + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Chain { + fn read(&mut self, buf: &mut [u8]) -> Result { + if !self.done_first { +@@ -1452,7 +1414,7 @@ impl Read for Chain { + } + } + +-#[stable(feature = "chain_bufread", since = "1.9.0")] ++#[cfg(feature="collections")] + impl BufRead for Chain { + fn fill_buf(&mut self) -> Result<&[u8]> { + if !self.done_first { +@@ -1479,7 +1441,6 @@ impl BufRead for Chain { + /// Please see the documentation of `take()` for more details. + /// + /// [take]: trait.Read.html#method.take +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Take { + inner: T, + limit: u64, +@@ -1511,7 +1472,6 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn limit(&self) -> u64 { self.limit } + + /// Consumes the `Take`, returning the wrapped reader. +@@ -1536,13 +1496,11 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[unstable(feature = "io_take_into_inner", issue = "23755")] + pub fn into_inner(self) -> T { + self.inner + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Take { + fn read(&mut self, buf: &mut [u8]) -> Result { + // Don't call into inner reader at all at EOF because it may still block +@@ -1557,7 +1515,7 @@ impl Read for Take { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Take { + fn fill_buf(&mut self) -> Result<&[u8]> { + // Don't call into inner reader at all at EOF because it may still block +@@ -1596,12 +1554,10 @@ fn read_one_byte(reader: &mut Read) -> Option> { + /// Please see the documentation of [`bytes()`] for more details. + /// + /// [`bytes()`]: trait.Read.html#method.bytes +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Bytes { + inner: R, + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Iterator for Bytes { + type Item = Result; + +@@ -1616,8 +1572,6 @@ impl Iterator for Bytes { + /// Please see the documentation of `chars()` for more details. + /// + /// [chars]: trait.Read.html#method.chars +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + pub struct Chars { + inner: R, + } +@@ -1625,8 +1579,6 @@ pub struct Chars { + /// An enumeration of possible errors that can be generated from the `Chars` + /// adapter. + #[derive(Debug)] +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + pub enum CharsError { + /// Variant representing that the underlying stream was read successfully + /// but it did not contain valid utf8 data. +@@ -1636,8 +1588,6 @@ pub enum CharsError { + Other(Error), + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl Iterator for Chars { + type Item = result::Result; + +@@ -1669,25 +1619,6 @@ impl Iterator for Chars { + } + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] +-impl std_error::Error for CharsError { +- fn description(&self) -> &str { +- match *self { +- CharsError::NotUtf8 => "invalid utf8 encoding", +- CharsError::Other(ref e) => std_error::Error::description(e), +- } +- } +- fn cause(&self) -> Option<&std_error::Error> { +- match *self { +- CharsError::NotUtf8 => None, +- CharsError::Other(ref e) => e.cause(), +- } +- } +-} +- +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl fmt::Display for CharsError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + match *self { +@@ -1706,13 +1637,13 @@ impl fmt::Display for CharsError { + /// `BufRead`. Please see the documentation of `split()` for more details. + /// + /// [split]: trait.BufRead.html#method.split +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub struct Split { + buf: B, + delim: u8, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Split { + type Item = Result>; + +@@ -1737,12 +1668,12 @@ impl Iterator for Split { + /// `BufRead`. Please see the documentation of `lines()` for more details. + /// + /// [lines]: trait.BufRead.html#method.lines +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub struct Lines { + buf: B, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Lines { + type Item = Result; + +diff --git a/prelude.rs b/prelude.rs +index 8772d0f..49d66c9 100644 +--- a/prelude.rs ++++ b/prelude.rs +@@ -18,7 +18,8 @@ + //! use std::io::prelude::*; + //! ``` + +-#![stable(feature = "rust1", since = "1.0.0")] ++pub use super::{Read, Write, Seek}; ++#[cfg(feature="collections")] pub use super::BufRead; + +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use super::{Read, Write, BufRead, Seek}; ++#[cfg(feature="collections")] pub use alloc::boxed::Box; ++#[cfg(feature="collections")] pub use collections::vec::Vec; +diff --git a/util.rs b/util.rs +index 2c68802..93bcfc3 100644 +--- a/util.rs ++++ b/util.rs +@@ -10,7 +10,8 @@ + + #![allow(missing_copy_implementations)] + +-use io::{self, Read, Write, ErrorKind, BufRead}; ++use io::{self, Read, Write, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; + + /// Copies the entire contents of a reader into a writer. + /// +@@ -42,7 +43,6 @@ use io::{self, Read, Write, ErrorKind, BufRead}; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn copy(reader: &mut R, writer: &mut W) -> io::Result + where R: Read, W: Write + { +@@ -66,7 +66,6 @@ pub fn copy(reader: &mut R, writer: &mut W) -> io::Result< + /// the documentation of `empty()` for more details. + /// + /// [empty]: fn.empty.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Empty { _priv: () } + + /// Constructs a new handle to an empty reader. +@@ -84,14 +83,12 @@ pub struct Empty { _priv: () } + /// io::empty().read_to_string(&mut buffer).unwrap(); + /// assert!(buffer.is_empty()); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn empty() -> Empty { Empty { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Empty { + fn read(&mut self, _buf: &mut [u8]) -> io::Result { Ok(0) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Empty { + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(&[]) } + fn consume(&mut self, _n: usize) {} +@@ -103,7 +100,6 @@ impl BufRead for Empty { + /// see the documentation of `repeat()` for more details. + /// + /// [repeat]: fn.repeat.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Repeat { byte: u8 } + + /// Creates an instance of a reader that infinitely repeats one byte. +@@ -120,10 +116,8 @@ pub struct Repeat { byte: u8 } + /// io::repeat(0b101).read_exact(&mut buffer).unwrap(); + /// assert_eq!(buffer, [0b101, 0b101, 0b101]); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn repeat(byte: u8) -> Repeat { Repeat { byte: byte } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Repeat { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + for slot in &mut *buf { +@@ -139,7 +133,6 @@ impl Read for Repeat { + /// see the documentation of `sink()` for more details. + /// + /// [sink]: fn.sink.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Sink { _priv: () } + + /// Creates an instance of a writer which will successfully consume all data. +@@ -156,10 +149,8 @@ pub struct Sink { _priv: () } + /// let num_bytes = io::sink().write(&buffer).unwrap(); + /// assert_eq!(num_bytes, 5); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn sink() -> Sink { Sink { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for Sink { + fn write(&mut self, buf: &[u8]) -> io::Result { Ok(buf.len()) } + fn flush(&mut self) -> io::Result<()> { Ok(()) } diff --git a/patches/e7b0f2badf7c3393f1b36339b121054d05353442.patch b/patches/e7b0f2badf7c3393f1b36339b121054d05353442.patch new file mode 100644 index 0000000..42b4488 --- /dev/null +++ b/patches/e7b0f2badf7c3393f1b36339b121054d05353442.patch @@ -0,0 +1,1510 @@ +diff --git a/buffered.rs b/buffered.rs +index f98a3a8..1601229 100644 +--- a/buffered.rs ++++ b/buffered.rs +@@ -10,13 +10,13 @@ + + //! Buffering wrappers for I/O traits + ++use core::prelude::v1::*; + use io::prelude::*; + +-use cmp; +-use error; +-use fmt; ++use core::cmp; ++use core::fmt; + use io::{self, DEFAULT_BUF_SIZE, Error, ErrorKind, SeekFrom}; +-use memchr; ++use io::memchr; + + /// The `BufReader` struct adds buffering to any reader. + /// +@@ -46,7 +46,6 @@ use memchr; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufReader { + inner: R, + buf: Box<[u8]>, +@@ -69,7 +68,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: R) -> BufReader { + BufReader::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -90,7 +88,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: R) -> BufReader { + BufReader { + inner: inner, +@@ -118,7 +115,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &R { &self.inner } + + /// Gets a mutable reference to the underlying reader. +@@ -139,7 +135,6 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut R { &mut self.inner } + + /// Unwraps this `BufReader`, returning the underlying reader. +@@ -160,11 +155,9 @@ impl BufReader { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> R { self.inner } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for BufReader { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + // If we don't have any buffered data and we're doing a massive read +@@ -182,7 +175,6 @@ impl Read for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl BufRead for BufReader { + fn fill_buf(&mut self) -> io::Result<&[u8]> { + // If we've reached the end of our internal buffer then we need to fetch +@@ -202,7 +194,6 @@ impl BufRead for BufReader { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufReader where R: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufReader") +@@ -212,7 +203,6 @@ impl fmt::Debug for BufReader where R: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufReader { + /// Seek to an offset, in bytes, in the underlying reader. + /// +@@ -305,7 +295,6 @@ impl Seek for BufReader { + /// [`Write`]: ../../std/io/trait.Write.html + /// [`write`]: ../../std/net/struct.TcpStream.html#method.write + /// [`TcpStream`]: ../../std/net/struct.TcpStream.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct BufWriter { + inner: Option, + buf: Vec, +@@ -340,7 +329,6 @@ pub struct BufWriter { + /// }; + /// ``` + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct IntoInnerError(W, Error); + + impl BufWriter { +@@ -354,7 +342,6 @@ impl BufWriter { + /// + /// let mut buffer = BufWriter::new(TcpStream::connect("127.0.0.1:34254").unwrap()); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> BufWriter { + BufWriter::with_capacity(DEFAULT_BUF_SIZE, inner) + } +@@ -372,7 +359,6 @@ impl BufWriter { + /// let stream = TcpStream::connect("127.0.0.1:34254").unwrap(); + /// let mut buffer = BufWriter::with_capacity(100, stream); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> BufWriter { + BufWriter { + inner: Some(inner), +@@ -421,7 +407,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.as_ref().unwrap() } + + /// Gets a mutable reference to the underlying writer. +@@ -439,7 +424,6 @@ impl BufWriter { + /// // we can use reference just like buffer + /// let reference = buffer.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.as_mut().unwrap() } + + /// Unwraps this `BufWriter`, returning the underlying writer. +@@ -457,7 +441,6 @@ impl BufWriter { + /// // unwrap the TcpStream and flush the buffer + /// let stream = buffer.into_inner().unwrap(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(mut self) -> Result>> { + match self.flush_buf() { + Err(e) => Err(IntoInnerError(self, e)), +@@ -466,7 +449,6 @@ impl BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for BufWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.buf.len() + buf.len() > self.buf.capacity() { +@@ -486,7 +468,6 @@ impl Write for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for BufWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("BufWriter") +@@ -496,7 +477,6 @@ impl fmt::Debug for BufWriter where W: fmt::Debug { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Seek for BufWriter { + /// Seek to the offset, in bytes, in the underlying writer. + /// +@@ -506,7 +486,6 @@ impl Seek for BufWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Drop for BufWriter { + fn drop(&mut self) { + if self.inner.is_some() && !self.panicked { +@@ -545,7 +524,6 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn error(&self) -> &Error { &self.1 } + + /// Returns the buffered writer instance which generated the error. +@@ -578,23 +556,13 @@ impl IntoInnerError { + /// } + /// }; + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> W { self.0 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl From> for Error { + fn from(iie: IntoInnerError) -> Error { iie.1 } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for IntoInnerError { +- fn description(&self) -> &str { +- error::Error::description(self.error()) +- } +-} +- +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for IntoInnerError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + self.error().fmt(f) +@@ -649,7 +617,6 @@ impl fmt::Display for IntoInnerError { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct LineWriter { + inner: BufWriter, + need_flush: bool, +@@ -670,7 +637,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: W) -> LineWriter { + // Lines typically aren't that long, don't use a giant buffer + LineWriter::with_capacity(1024, inner) +@@ -691,7 +657,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn with_capacity(cap: usize, inner: W) -> LineWriter { + LineWriter { + inner: BufWriter::with_capacity(cap, inner), +@@ -715,7 +680,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &W { self.inner.get_ref() } + + /// Gets a mutable reference to the underlying writer. +@@ -738,7 +702,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut W { self.inner.get_mut() } + + /// Unwraps this `LineWriter`, returning the underlying writer. +@@ -760,7 +723,6 @@ impl LineWriter { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> Result>> { + self.inner.into_inner().map_err(|IntoInnerError(buf, e)| { + IntoInnerError(LineWriter { +@@ -771,7 +733,6 @@ impl LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for LineWriter { + fn write(&mut self, buf: &[u8]) -> io::Result { + if self.need_flush { +@@ -816,7 +777,6 @@ impl Write for LineWriter { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Debug for LineWriter where W: fmt::Debug { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + fmt.debug_struct("LineWriter") +diff --git a/cursor.rs b/cursor.rs +index 60767ea..199cad1 100644 +--- a/cursor.rs ++++ b/cursor.rs +@@ -8,10 +8,11 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + ++use core::prelude::v1::*; + use io::prelude::*; + +-use core::convert::TryInto; +-use cmp; ++#[cfg(feature = "collections")] use core::convert::TryInto; ++use core::cmp; + use io::{self, SeekFrom, Error, ErrorKind}; + + /// A `Cursor` wraps another type and provides it with a +@@ -79,7 +80,6 @@ use io::{self, SeekFrom, Error, ErrorKind}; + /// assert_eq!(&buff.get_ref()[5..15], &[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]); + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Clone, Debug)] + pub struct Cursor { + inner: T, +@@ -98,7 +98,6 @@ impl Cursor { + /// # fn force_inference(_: &Cursor>) {} + /// # force_inference(&buff); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(inner: T) -> Cursor { + Cursor { pos: 0, inner: inner } + } +@@ -116,7 +115,6 @@ impl Cursor { + /// + /// let vec = buff.into_inner(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn into_inner(self) -> T { self.inner } + + /// Gets a reference to the underlying value in this cursor. +@@ -132,7 +130,6 @@ impl Cursor { + /// + /// let reference = buff.get_ref(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_ref(&self) -> &T { &self.inner } + + /// Gets a mutable reference to the underlying value in this cursor. +@@ -151,7 +148,6 @@ impl Cursor { + /// + /// let reference = buff.get_mut(); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn get_mut(&mut self) -> &mut T { &mut self.inner } + + /// Returns the current position of this cursor. +@@ -173,7 +169,6 @@ impl Cursor { + /// buff.seek(SeekFrom::Current(-1)).unwrap(); + /// assert_eq!(buff.position(), 1); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn position(&self) -> u64 { self.pos } + + /// Sets the position of this cursor. +@@ -193,11 +188,9 @@ impl Cursor { + /// buff.set_position(4); + /// assert_eq!(buff.position(), 4); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn set_position(&mut self, pos: u64) { self.pos = pos; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl io::Seek for Cursor where T: AsRef<[u8]> { + fn seek(&mut self, style: SeekFrom) -> io::Result { + let (base_pos, offset) = match style { +@@ -218,25 +211,27 @@ impl io::Seek for Cursor where T: AsRef<[u8]> { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Cursor where T: AsRef<[u8]> { + fn read(&mut self, buf: &mut [u8]) -> io::Result { +- let n = Read::read(&mut self.fill_buf()?, buf)?; ++ let n = Read::read(&mut self.get_buf()?, buf)?; + self.pos += n as u64; + Ok(n) + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl BufRead for Cursor where T: AsRef<[u8]> { +- fn fill_buf(&mut self) -> io::Result<&[u8]> { ++impl Cursor where T: AsRef<[u8]> { ++ fn get_buf(&mut self) -> io::Result<&[u8]> { + let amt = cmp::min(self.pos, self.inner.as_ref().len() as u64); + Ok(&self.inner.as_ref()[(amt as usize)..]) + } ++} ++ ++#[cfg(feature = "collections")] ++impl BufRead for Cursor where T: AsRef<[u8]> { ++ fn fill_buf(&mut self) -> io::Result<&[u8]> { self.get_buf() } + fn consume(&mut self, amt: usize) { self.pos += amt as u64; } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for Cursor<&'a mut [u8]> { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -248,7 +243,7 @@ impl<'a> Write for Cursor<&'a mut [u8]> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature = "collections")] + impl Write for Cursor> { + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos: usize = self.position().try_into().map_err(|_| { +@@ -278,8 +273,8 @@ impl Write for Cursor> { + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "cursor_box_slice", since = "1.5.0")] +-impl Write for Cursor> { ++#[cfg(feature = "alloc")] ++impl Write for Cursor<::alloc::boxed::Box<[u8]>> { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { + let pos = cmp::min(self.pos, self.inner.len() as u64); +diff --git a/error.rs b/error.rs +index fb67eaf..1c9f15e 100644 +--- a/error.rs ++++ b/error.rs +@@ -8,11 +8,16 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use error; +-use fmt; +-use result; +-use sys; +-use convert::From; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++#[cfg(not(feature="alloc"))] use ::FakeBox as Box; ++use core::convert::Into; ++use core::fmt; ++use core::marker::{Send, Sync}; ++use core::option::Option::{self, Some, None}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(not(feature="collections"))] use ::ErrorString as String; ++use core::convert::From; + + /// A specialized [`Result`](../result/enum.Result.html) type for I/O + /// operations. +@@ -44,7 +49,6 @@ use convert::From; + /// Ok(buffer) + /// } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub type Result = result::Result; + + /// The error type for I/O operations of the `Read`, `Write`, `Seek`, and +@@ -56,7 +60,6 @@ pub type Result = result::Result; + /// + /// [`ErrorKind`]: enum.ErrorKind.html + #[derive(Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Error { + repr: Repr, + } +@@ -64,13 +67,16 @@ pub struct Error { + enum Repr { + Os(i32), + Simple(ErrorKind), ++ #[cfg(feature="alloc")] + Custom(Box), ++ #[cfg(not(feature="alloc"))] ++ Custom(Custom), + } + + #[derive(Debug)] + struct Custom { + kind: ErrorKind, +- error: Box, ++ error: String, + } + + /// A list specifying general categories of I/O error. +@@ -82,47 +88,34 @@ struct Custom { + /// + /// [`io::Error`]: struct.Error.html + #[derive(Clone, Copy, Debug, Eq, Hash, Ord, PartialEq, PartialOrd)] +-#[stable(feature = "rust1", since = "1.0.0")] + #[allow(deprecated)] + pub enum ErrorKind { + /// An entity was not found, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + NotFound, + /// The operation lacked the necessary privileges to complete. +- #[stable(feature = "rust1", since = "1.0.0")] + PermissionDenied, + /// The connection was refused by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionRefused, + /// The connection was reset by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionReset, + /// The connection was aborted (terminated) by the remote server. +- #[stable(feature = "rust1", since = "1.0.0")] + ConnectionAborted, + /// The network operation failed because it was not connected yet. +- #[stable(feature = "rust1", since = "1.0.0")] + NotConnected, + /// A socket address could not be bound because the address is already in + /// use elsewhere. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrInUse, + /// A nonexistent interface was requested or the requested address was not + /// local. +- #[stable(feature = "rust1", since = "1.0.0")] + AddrNotAvailable, + /// The operation failed because a pipe was closed. +- #[stable(feature = "rust1", since = "1.0.0")] + BrokenPipe, + /// An entity already exists, often a file. +- #[stable(feature = "rust1", since = "1.0.0")] + AlreadyExists, + /// The operation needs to block to complete, but the blocking operation was + /// requested to not occur. +- #[stable(feature = "rust1", since = "1.0.0")] + WouldBlock, + /// A parameter was incorrect. +- #[stable(feature = "rust1", since = "1.0.0")] + InvalidInput, + /// Data not valid for the operation were encountered. + /// +@@ -134,10 +127,8 @@ pub enum ErrorKind { + /// `InvalidData` if the file's contents are not valid UTF-8. + /// + /// [`InvalidInput`]: #variant.InvalidInput +- #[stable(feature = "io_invalid_data", since = "1.2.0")] + InvalidData, + /// The I/O operation's timeout expired, causing it to be canceled. +- #[stable(feature = "rust1", since = "1.0.0")] + TimedOut, + /// An error returned when an operation could not be completed because a + /// call to [`write`] returned [`Ok(0)`]. +@@ -148,15 +139,12 @@ pub enum ErrorKind { + /// + /// [`write`]: ../../std/io/trait.Write.html#tymethod.write + /// [`Ok(0)`]: ../../std/io/type.Result.html +- #[stable(feature = "rust1", since = "1.0.0")] + WriteZero, + /// This operation was interrupted. + /// + /// Interrupted operations can typically be retried. +- #[stable(feature = "rust1", since = "1.0.0")] + Interrupted, + /// Any I/O error not part of this list. +- #[stable(feature = "rust1", since = "1.0.0")] + Other, + + /// An error returned when an operation could not be completed because an +@@ -165,15 +153,10 @@ pub enum ErrorKind { + /// This typically means that an operation could only succeed if it read a + /// particular number of bytes but only a smaller number of bytes could be + /// read. +- #[stable(feature = "read_exact", since = "1.6.0")] + UnexpectedEof, + + /// A marker variant that tells the compiler that users of this enum cannot + /// match it exhaustively. +- #[unstable(feature = "io_error_internals", +- reason = "better expressed through extensible enums that this \ +- enum cannot be exhaustively matched against", +- issue = "0")] + #[doc(hidden)] + __Nonexhaustive, + } +@@ -206,7 +189,6 @@ impl ErrorKind { + + /// Intended for use for errors not exposed to the user, where allocating onto + /// the heap (for normal construction via Error::new) is too costly. +-#[stable(feature = "io_error_from_errorkind", since = "1.14.0")] + impl From for Error { + fn from(kind: ErrorKind) -> Error { + Error { +@@ -234,14 +216,13 @@ impl Error { + /// // errors can also be created from other errors + /// let custom_error2 = Error::new(ErrorKind::Interrupted, custom_error); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn new(kind: ErrorKind, error: E) -> Error +- where E: Into> ++ where E: Into + { + Self::_new(kind, error.into()) + } + +- fn _new(kind: ErrorKind, error: Box) -> Error { ++ fn _new(kind: ErrorKind, error: String) -> Error { + Error { + repr: Repr::Custom(Box::new(Custom { + kind: kind, +@@ -250,24 +231,6 @@ impl Error { + } + } + +- /// Returns an error representing the last OS error which occurred. +- /// +- /// This function reads the value of `errno` for the target platform (e.g. +- /// `GetLastError` on Windows) and will return a corresponding instance of +- /// `Error` for the error code. +- /// +- /// # Examples +- /// +- /// ``` +- /// use std::io::Error; +- /// +- /// println!("last OS error: {:?}", Error::last_os_error()); +- /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] +- pub fn last_os_error() -> Error { +- Error::from_raw_os_error(sys::os::errno() as i32) +- } +- + /// Creates a new instance of an `Error` from a particular OS error code. + /// + /// # Examples +@@ -293,7 +256,6 @@ impl Error { + /// assert_eq!(error.kind(), io::ErrorKind::AddrInUse); + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn from_raw_os_error(code: i32) -> Error { + Error { repr: Repr::Os(code) } + } +@@ -324,7 +286,6 @@ impl Error { + /// print_os_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn raw_os_error(&self) -> Option { + match self.repr { + Repr::Os(i) => Some(i), +@@ -358,12 +319,11 @@ impl Error { + /// print_error(&Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_ref(&self) -> Option<&(error::Error+Send+Sync+'static)> { ++ pub fn get_ref(&self) -> Option<&String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref c) => Some(&*c.error), ++ Repr::Custom(ref c) => Some(&c.error), + } + } + +@@ -429,12 +389,11 @@ impl Error { + /// print_error(&change_error(Error::new(ErrorKind::Other, MyError::new()))); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn get_mut(&mut self) -> Option<&mut (error::Error+Send+Sync+'static)> { ++ pub fn get_mut(&mut self) -> Option<&mut String> { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +- Repr::Custom(ref mut c) => Some(&mut *c.error), ++ Repr::Custom(ref mut c) => Some(&mut c.error), + } + } + +@@ -463,8 +422,7 @@ impl Error { + /// print_error(Error::new(ErrorKind::Other, "oh no!")); + /// } + /// ``` +- #[stable(feature = "io_error_inner", since = "1.3.0")] +- pub fn into_inner(self) -> Option> { ++ pub fn into_inner(self) -> Option { + match self.repr { + Repr::Os(..) => None, + Repr::Simple(..) => None, +@@ -490,10 +448,9 @@ impl Error { + /// print_error(Error::new(ErrorKind::AddrInUse, "oh no!")); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn kind(&self) -> ErrorKind { + match self.repr { +- Repr::Os(code) => sys::decode_error_kind(code), ++ Repr::Os(_code) => ErrorKind::Other, + Repr::Custom(ref c) => c.kind, + Repr::Simple(kind) => kind, + } +@@ -504,21 +461,18 @@ impl fmt::Debug for Repr { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match *self { + Repr::Os(ref code) => +- fmt.debug_struct("Os").field("code", code) +- .field("message", &sys::os::error_string(*code)).finish(), ++ fmt.debug_struct("Os").field("code", code).finish(), + Repr::Custom(ref c) => fmt.debug_tuple("Custom").field(c).finish(), + Repr::Simple(kind) => fmt.debug_tuple("Kind").field(&kind).finish(), + } + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl fmt::Display for Error { + fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result { + match self.repr { + Repr::Os(code) => { +- let detail = sys::os::error_string(code); +- write!(fmt, "{} (os error {})", detail, code) ++ write!(fmt, "os error {}", code) + } + Repr::Custom(ref c) => c.error.fmt(fmt), + Repr::Simple(kind) => write!(fmt, "{}", kind.as_str()), +@@ -526,24 +480,6 @@ impl fmt::Display for Error { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] +-impl error::Error for Error { +- fn description(&self) -> &str { +- match self.repr { +- Repr::Os(..) | Repr::Simple(..) => self.kind().as_str(), +- Repr::Custom(ref c) => c.error.description(), +- } +- } +- +- fn cause(&self) -> Option<&error::Error> { +- match self.repr { +- Repr::Os(..) => None, +- Repr::Simple(..) => None, +- Repr::Custom(ref c) => c.error.cause(), +- } +- } +-} +- + fn _assert_error_is_sync_send() { + fn _is_sync_send() {} + _is_sync_send::(); +diff --git a/impls.rs b/impls.rs +index f691289..c4374d3 100644 +--- a/impls.rs ++++ b/impls.rs +@@ -8,26 +8,31 @@ + // option. This file may not be copied, modified, or distributed + // except according to those terms. + +-use cmp; +-use io::{self, SeekFrom, Read, Write, Seek, BufRead, Error, ErrorKind}; +-use fmt; +-use mem; ++#[cfg(feature="alloc")] use alloc::boxed::Box; ++use core::cmp; ++use io::{self, SeekFrom, Read, Write, Seek, Error, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; ++use core::fmt; ++use core::mem; ++#[cfg(feature="collections")] use collections::string::String; ++#[cfg(feature="collections")] use collections::vec::Vec; + + // ============================================================================= + // Forwarding implementations + +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, R: Read + ?Sized> Read for &'a mut R { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -38,7 +43,6 @@ impl<'a, R: Read + ?Sized> Read for &'a mut R { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, W: Write + ?Sized> Write for &'a mut W { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -56,12 +60,11 @@ impl<'a, W: Write + ?Sized> Write for &'a mut W { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a, S: Seek + ?Sized> Seek for &'a mut S { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -80,18 +83,20 @@ impl<'a, B: BufRead + ?Sized> BufRead for &'a mut B { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Read for Box { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { + (**self).read(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_end(&mut self, buf: &mut Vec) -> io::Result { + (**self).read_to_end(buf) + } + ++ #[cfg(feature="collections")] + #[inline] + fn read_to_string(&mut self, buf: &mut String) -> io::Result { + (**self).read_to_string(buf) +@@ -102,7 +107,7 @@ impl Read for Box { + (**self).read_exact(buf) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Write for Box { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { (**self).write(buf) } +@@ -120,12 +125,12 @@ impl Write for Box { + (**self).write_fmt(fmt) + } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="alloc")] + impl Seek for Box { + #[inline] + fn seek(&mut self, pos: SeekFrom) -> io::Result { (**self).seek(pos) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Box { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { (**self).fill_buf() } +@@ -151,7 +156,6 @@ impl BufRead for Box { + /// + /// Note that reading updates the slice to point to the yet unread part. + /// The slice will be empty when EOF is reached. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Read for &'a [u8] { + #[inline] + fn read(&mut self, buf: &mut [u8]) -> io::Result { +@@ -193,7 +197,7 @@ impl<'a> Read for &'a [u8] { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl<'a> BufRead for &'a [u8] { + #[inline] + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(*self) } +@@ -207,7 +211,6 @@ impl<'a> BufRead for &'a [u8] { + /// + /// Note that writing updates the slice to point to the yet unwritten part. + /// The slice will be empty when it has been completely overwritten. +-#[stable(feature = "rust1", since = "1.0.0")] + impl<'a> Write for &'a mut [u8] { + #[inline] + fn write(&mut self, data: &[u8]) -> io::Result { +@@ -233,7 +236,7 @@ impl<'a> Write for &'a mut [u8] { + + /// Write is implemented for `Vec` by appending to the vector. + /// The vector will grow as needed. +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Write for Vec { + #[inline] + fn write(&mut self, buf: &[u8]) -> io::Result { +diff --git a/memchr.rs b/memchr.rs +index 3824a5f..312cf47 100644 +--- a/memchr.rs ++++ b/memchr.rs +@@ -11,10 +11,12 @@ + // Original implementation taken from rust-memchr + // Copyright 2015 Andrew Gallant, bluss and Nicolas Koch + ++pub use self::fallback::{memchr,memrchr}; ++ + #[allow(dead_code)] + pub mod fallback { +- use cmp; +- use mem; ++ use core::cmp; ++ use core::mem; + + const LO_U64: u64 = 0x0101010101010101; + const HI_U64: u64 = 0x8080808080808080; +diff --git a/mod.rs b/mod.rs +index 850885a..f76f1dd 100644 +--- a/mod.rs ++++ b/mod.rs +@@ -253,44 +253,34 @@ + //! [`?` operator]: ../../book/syntax-index.html + //! [`read`]: trait.Read.html#tymethod.read + +-#![stable(feature = "rust1", since = "1.0.0")] +- +-use cmp; ++use core::cmp; + use core::str as core_str; +-use error as std_error; +-use fmt; +-use result; +-use str; +-use memchr; +- +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::{BufReader, BufWriter, LineWriter}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::buffered::IntoInnerError; +-#[stable(feature = "rust1", since = "1.0.0")] ++use core::fmt; ++use core::iter::{Iterator}; ++use core::marker::Sized; ++#[cfg(feature="collections")] use core::ops::{Drop, FnOnce}; ++use core::option::Option::{self, Some, None}; ++use core::result::Result::{Ok, Err}; ++use core::result; ++#[cfg(feature="collections")] use collections::string::String; ++use core::str; ++#[cfg(feature="collections")] use collections::vec::Vec; ++mod memchr; ++ ++#[cfg(feature="collections")] pub use self::buffered::{BufReader, BufWriter, LineWriter}; ++#[cfg(feature="collections")] pub use self::buffered::IntoInnerError; + pub use self::cursor::Cursor; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::error::{Result, Error, ErrorKind}; +-#[stable(feature = "rust1", since = "1.0.0")] + pub use self::util::{copy, sink, Sink, empty, Empty, repeat, Repeat}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{stdin, stdout, stderr, _print, Stdin, Stdout, Stderr}; +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use self::stdio::{StdoutLock, StderrLock, StdinLock}; +-#[unstable(feature = "libstd_io_internals", issue = "0")] +-#[doc(no_inline, hidden)] +-pub use self::stdio::{set_panic, set_print}; + + pub mod prelude; +-mod buffered; ++#[cfg(feature="collections")] mod buffered; + mod cursor; + mod error; + mod impls; +-mod lazy; + mod util; +-mod stdio; + +-const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; ++const DEFAULT_BUF_SIZE: usize = 8 * 1024; + + // A few methods below (read_to_string, read_line) will append data into a + // `String` buffer, but we need to be pretty careful when doing this. The +@@ -310,6 +300,7 @@ const DEFAULT_BUF_SIZE: usize = ::sys_common::io::DEFAULT_BUF_SIZE; + // 2. We're passing a raw buffer to the function `f`, and it is expected that + // the function only *appends* bytes to the buffer. We'll get undefined + // behavior if existing bytes are overwritten to have non-UTF-8 data. ++#[cfg(feature="collections")] + fn append_to_string(buf: &mut String, f: F) -> Result + where F: FnOnce(&mut Vec) -> Result + { +@@ -341,6 +332,7 @@ fn append_to_string(buf: &mut String, f: F) -> Result + // of data to return. Simply tacking on an extra DEFAULT_BUF_SIZE space every + // time is 4,500 times (!) slower than this if the reader has a very small + // amount of data to return. ++#[cfg(feature="collections")] + fn read_to_end(r: &mut R, buf: &mut Vec) -> Result { + let start_len = buf.len(); + let mut len = start_len; +@@ -423,7 +415,6 @@ fn read_to_end(r: &mut R, buf: &mut Vec) -> Result + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Read { + /// Pull some bytes from this source into the specified buffer, returning + /// how many bytes were read. +@@ -473,7 +464,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read(&mut self, buf: &mut [u8]) -> Result; + + /// Read all bytes until EOF in this source, placing them into `buf`. +@@ -515,7 +505,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_end(&mut self, buf: &mut Vec) -> Result { + read_to_end(self, buf) + } +@@ -553,7 +543,7 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] ++ #[cfg(feature="collections")] + fn read_to_string(&mut self, buf: &mut String) -> Result { + // Note that we do *not* call `.read_to_end()` here. We are passing + // `&mut Vec` (the raw contents of `buf`) into the `read_to_end` +@@ -614,7 +604,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "read_exact", since = "1.6.0")] + fn read_exact(&mut self, mut buf: &mut [u8]) -> Result<()> { + while !buf.is_empty() { + match self.read(buf) { +@@ -666,7 +655,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + + /// Transforms this `Read` instance to an `Iterator` over its bytes. +@@ -696,7 +684,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn bytes(self) -> Bytes where Self: Sized { + Bytes { inner: self } + } +@@ -733,10 +720,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[unstable(feature = "io", reason = "the semantics of a partial read/write \ +- of where errors happen is currently \ +- unclear and may change", +- issue = "27802")] + fn chars(self) -> Chars where Self: Sized { + Chars { inner: self } + } +@@ -771,7 +754,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn chain(self, next: R) -> Chain where Self: Sized { + Chain { first: self, second: next, done_first: false } + } +@@ -805,7 +787,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn take(self, limit: u64) -> Take where Self: Sized { + Take { inner: self, limit: limit } + } +@@ -845,7 +826,6 @@ pub trait Read { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Write { + /// Write a buffer into this object, returning how many bytes were written. + /// +@@ -885,7 +865,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write(&mut self, buf: &[u8]) -> Result; + + /// Flush this output stream, ensuring that all intermediately buffered +@@ -911,7 +890,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn flush(&mut self) -> Result<()>; + + /// Attempts to write an entire buffer into this write. +@@ -938,7 +916,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_all(&mut self, mut buf: &[u8]) -> Result<()> { + while !buf.is_empty() { + match self.write(buf) { +@@ -990,7 +967,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn write_fmt(&mut self, fmt: fmt::Arguments) -> Result<()> { + // Create a shim which translates a Write to a fmt::Write and saves + // off I/O errors. instead of discarding them +@@ -1046,7 +1022,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn by_ref(&mut self) -> &mut Self where Self: Sized { self } + } + +@@ -1076,7 +1051,6 @@ pub trait Write { + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub trait Seek { + /// Seek to an offset, in bytes, in a stream. + /// +@@ -1092,7 +1066,6 @@ pub trait Seek { + /// Seeking to a negative offset is considered an error. + /// + /// [`SeekFrom::Start`]: enum.SeekFrom.html#variant.Start +- #[stable(feature = "rust1", since = "1.0.0")] + fn seek(&mut self, pos: SeekFrom) -> Result; + } + +@@ -1102,29 +1075,26 @@ pub trait Seek { + /// + /// [`Seek`]: trait.Seek.html + #[derive(Copy, PartialEq, Eq, Clone, Debug)] +-#[stable(feature = "rust1", since = "1.0.0")] + pub enum SeekFrom { + /// Set the offset to the provided number of bytes. +- #[stable(feature = "rust1", since = "1.0.0")] +- Start(#[stable(feature = "rust1", since = "1.0.0")] u64), ++ Start(u64), + + /// Set the offset to the size of this object plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- End(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ End(i64), + + /// Set the offset to the current position plus the specified number of + /// bytes. + /// + /// It is possible to seek beyond the end of an object, but it's an error to + /// seek before byte 0. +- #[stable(feature = "rust1", since = "1.0.0")] +- Current(#[stable(feature = "rust1", since = "1.0.0")] i64), ++ Current(i64), + } + ++#[cfg(feature="collections")] + fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + -> Result { + let mut read = 0; +@@ -1204,7 +1174,7 @@ fn read_until(r: &mut R, delim: u8, buf: &mut Vec) + /// # } + /// ``` + /// +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + pub trait BufRead: Read { + /// Fills the internal buffer of this object, returning the buffer contents. + /// +@@ -1249,7 +1219,6 @@ pub trait BufRead: Read { + /// // ensure the bytes we worked with aren't returned again later + /// stdin.consume(length); + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn fill_buf(&mut self) -> Result<&[u8]>; + + /// Tells this buffer that `amt` bytes have been consumed from the buffer, +@@ -1271,7 +1240,6 @@ pub trait BufRead: Read { + /// that method's example includes an example of `consume()`. + /// + /// [`fill_buf`]: #tymethod.fill_buf +- #[stable(feature = "rust1", since = "1.0.0")] + fn consume(&mut self, amt: usize); + + /// Read all bytes into `buf` until the delimiter `byte` or EOF is reached. +@@ -1313,7 +1281,6 @@ pub trait BufRead: Read { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_until(&mut self, byte: u8, buf: &mut Vec) -> Result { + read_until(self, byte, buf) + } +@@ -1360,7 +1327,6 @@ pub trait BufRead: Read { + /// buffer.clear(); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn read_line(&mut self, buf: &mut String) -> Result { + // Note that we are not calling the `.read_until` method here, but + // rather our hardcoded implementation. For more details as to why, see +@@ -1397,7 +1363,6 @@ pub trait BufRead: Read { + /// println!("{:?}", content.unwrap()); + /// } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + fn split(self, byte: u8) -> Split where Self: Sized { + Split { buf: self, delim: byte } + } +@@ -1431,7 +1396,6 @@ pub trait BufRead: Read { + /// Each line of the iterator has the same error semantics as [`BufRead::read_line`]. + /// + /// [`BufRead::read_line`]: trait.BufRead.html#method.read_line +- #[stable(feature = "rust1", since = "1.0.0")] + fn lines(self) -> Lines where Self: Sized { + Lines { buf: self } + } +@@ -1443,14 +1407,12 @@ pub trait BufRead: Read { + /// Please see the documentation of [`chain`] for more details. + /// + /// [`chain`]: trait.Read.html#method.chain +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Chain { + first: T, + second: U, + done_first: bool, + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Chain { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.debug_struct("Chain") +@@ -1460,7 +1422,6 @@ impl fmt::Debug for Chain { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Chain { + fn read(&mut self, buf: &mut [u8]) -> Result { + if !self.done_first { +@@ -1473,7 +1434,7 @@ impl Read for Chain { + } + } + +-#[stable(feature = "chain_bufread", since = "1.9.0")] ++#[cfg(feature="collections")] + impl BufRead for Chain { + fn fill_buf(&mut self) -> Result<&[u8]> { + if !self.done_first { +@@ -1500,7 +1461,6 @@ impl BufRead for Chain { + /// Please see the documentation of [`take`] for more details. + /// + /// [`take`]: trait.Read.html#method.take +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Debug)] + pub struct Take { + inner: T, +@@ -1535,7 +1495,6 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "rust1", since = "1.0.0")] + pub fn limit(&self) -> u64 { self.limit } + + /// Consumes the `Take`, returning the wrapped reader. +@@ -1558,13 +1517,11 @@ impl Take { + /// # Ok(()) + /// # } + /// ``` +- #[stable(feature = "io_take_into_inner", since = "1.15.0")] + pub fn into_inner(self) -> T { + self.inner + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Take { + fn read(&mut self, buf: &mut [u8]) -> Result { + // Don't call into inner reader at all at EOF because it may still block +@@ -1579,7 +1536,7 @@ impl Read for Take { + } + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl BufRead for Take { + fn fill_buf(&mut self) -> Result<&[u8]> { + // Don't call into inner reader at all at EOF because it may still block +@@ -1618,13 +1575,11 @@ fn read_one_byte(reader: &mut Read) -> Option> { + /// Please see the documentation of [`bytes`] for more details. + /// + /// [`bytes`]: trait.Read.html#method.bytes +-#[stable(feature = "rust1", since = "1.0.0")] + #[derive(Debug)] + pub struct Bytes { + inner: R, + } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Iterator for Bytes { + type Item = Result; + +@@ -1639,8 +1594,6 @@ impl Iterator for Bytes { + /// Please see the documentation of `chars()` for more details. + /// + /// [chars]: trait.Read.html#method.chars +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + #[derive(Debug)] + pub struct Chars { + inner: R, +@@ -1649,8 +1602,6 @@ pub struct Chars { + /// An enumeration of possible errors that can be generated from the `Chars` + /// adapter. + #[derive(Debug)] +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + pub enum CharsError { + /// Variant representing that the underlying stream was read successfully + /// but it did not contain valid utf8 data. +@@ -1660,8 +1611,6 @@ pub enum CharsError { + Other(Error), + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl Iterator for Chars { + type Item = result::Result; + +@@ -1693,25 +1642,6 @@ impl Iterator for Chars { + } + } + +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] +-impl std_error::Error for CharsError { +- fn description(&self) -> &str { +- match *self { +- CharsError::NotUtf8 => "invalid utf8 encoding", +- CharsError::Other(ref e) => std_error::Error::description(e), +- } +- } +- fn cause(&self) -> Option<&std_error::Error> { +- match *self { +- CharsError::NotUtf8 => None, +- CharsError::Other(ref e) => e.cause(), +- } +- } +-} +- +-#[unstable(feature = "io", reason = "awaiting stability of Read::chars", +- issue = "27802")] + impl fmt::Display for CharsError { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + match *self { +@@ -1730,14 +1660,14 @@ impl fmt::Display for CharsError { + /// `BufRead`. Please see the documentation of `split()` for more details. + /// + /// [split]: trait.BufRead.html#method.split +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + #[derive(Debug)] + pub struct Split { + buf: B, + delim: u8, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Split { + type Item = Result>; + +@@ -1762,13 +1692,13 @@ impl Iterator for Split { + /// `BufRead`. Please see the documentation of `lines()` for more details. + /// + /// [lines]: trait.BufRead.html#method.lines +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + #[derive(Debug)] + pub struct Lines { + buf: B, + } + +-#[stable(feature = "rust1", since = "1.0.0")] ++#[cfg(feature="collections")] + impl Iterator for Lines { + type Item = Result; + +diff --git a/prelude.rs b/prelude.rs +index 8772d0f..49d66c9 100644 +--- a/prelude.rs ++++ b/prelude.rs +@@ -18,7 +18,8 @@ + //! use std::io::prelude::*; + //! ``` + +-#![stable(feature = "rust1", since = "1.0.0")] ++pub use super::{Read, Write, Seek}; ++#[cfg(feature="collections")] pub use super::BufRead; + +-#[stable(feature = "rust1", since = "1.0.0")] +-pub use super::{Read, Write, BufRead, Seek}; ++#[cfg(feature="collections")] pub use alloc::boxed::Box; ++#[cfg(feature="collections")] pub use collections::vec::Vec; +diff --git a/util.rs b/util.rs +index 078f1ad..fd13c98 100644 +--- a/util.rs ++++ b/util.rs +@@ -10,8 +10,9 @@ + + #![allow(missing_copy_implementations)] + +-use fmt; +-use io::{self, Read, Write, ErrorKind, BufRead}; ++use core::fmt; ++use io::{self, Read, Write, ErrorKind}; ++#[cfg(feature="collections")] use io::BufRead; + + /// Copies the entire contents of a reader into a writer. + /// +@@ -43,7 +44,6 @@ use io::{self, Read, Write, ErrorKind, BufRead}; + /// # Ok(()) + /// # } + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn copy(reader: &mut R, writer: &mut W) -> io::Result + where R: Read, W: Write + { +@@ -67,7 +67,6 @@ pub fn copy(reader: &mut R, writer: &mut W) -> io::Result< + /// the documentation of `empty()` for more details. + /// + /// [empty]: fn.empty.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Empty { _priv: () } + + /// Constructs a new handle to an empty reader. +@@ -85,20 +84,18 @@ pub struct Empty { _priv: () } + /// io::empty().read_to_string(&mut buffer).unwrap(); + /// assert!(buffer.is_empty()); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn empty() -> Empty { Empty { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Empty { + fn read(&mut self, _buf: &mut [u8]) -> io::Result { Ok(0) } + } +-#[stable(feature = "rust1", since = "1.0.0")] ++ ++#[cfg(feature="collections")] + impl BufRead for Empty { + fn fill_buf(&mut self) -> io::Result<&[u8]> { Ok(&[]) } + fn consume(&mut self, _n: usize) {} + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Empty { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Empty { .. }") +@@ -111,7 +108,6 @@ impl fmt::Debug for Empty { + /// see the documentation of `repeat()` for more details. + /// + /// [repeat]: fn.repeat.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Repeat { byte: u8 } + + /// Creates an instance of a reader that infinitely repeats one byte. +@@ -128,10 +124,8 @@ pub struct Repeat { byte: u8 } + /// io::repeat(0b101).read_exact(&mut buffer).unwrap(); + /// assert_eq!(buffer, [0b101, 0b101, 0b101]); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn repeat(byte: u8) -> Repeat { Repeat { byte: byte } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Read for Repeat { + fn read(&mut self, buf: &mut [u8]) -> io::Result { + for slot in &mut *buf { +@@ -141,7 +135,6 @@ impl Read for Repeat { + } + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Repeat { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Repeat { .. }") +@@ -154,7 +147,6 @@ impl fmt::Debug for Repeat { + /// see the documentation of `sink()` for more details. + /// + /// [sink]: fn.sink.html +-#[stable(feature = "rust1", since = "1.0.0")] + pub struct Sink { _priv: () } + + /// Creates an instance of a writer which will successfully consume all data. +@@ -171,16 +163,13 @@ pub struct Sink { _priv: () } + /// let num_bytes = io::sink().write(&buffer).unwrap(); + /// assert_eq!(num_bytes, 5); + /// ``` +-#[stable(feature = "rust1", since = "1.0.0")] + pub fn sink() -> Sink { Sink { _priv: () } } + +-#[stable(feature = "rust1", since = "1.0.0")] + impl Write for Sink { + fn write(&mut self, buf: &[u8]) -> io::Result { Ok(buf.len()) } + fn flush(&mut self) -> io::Result<()> { Ok(()) } + } + +-#[stable(feature = "std_debug", since = "1.16.0")] + impl fmt::Debug for Sink { + fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result { + f.pad("Sink { .. }")