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cursor write revert to memcpy

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This commit is contained in:
Simon Renblad 2025-01-22 14:28:35 +08:00
parent 54af1c5fd3
commit 2d2ccee10d
1 changed files with 2 additions and 6 deletions
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8
src/libio/cursor.rs
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@ -62,12 +62,8 @@ impl Write for Cursor<&mut [u8]> {
fn write(&mut self, buf: &[u8]) -> Result<usize, IoError> { fn write(&mut self, buf: &[u8]) -> Result<usize, IoError> {
let data = &mut self.inner[self.pos..]; let data = &mut self.inner[self.pos..];
let len = buf.len().min(data.len()); let len = buf.len().min(data.len());
for i in 0..len { // as long as 'copy_work_buffer' is used in drtioaux, memcpy here is allowed
unsafe { data[..len].copy_from_slice(&buf[..len]);
asm!("", options(preserves_flags, nostack, readonly));
}
data[i] = buf[i];
}
self.pos += len; self.pos += len;
Ok(len) Ok(len)
} }