mul.rs: use wrapping_mul to avoid infinite recursion
rustc in debug mode with a plain multiplication will call @llvm.umul.with.overflow.* which may call the builtin resulting in infinite recursion.
Fixes#127.
Cc @nezza this should be the fix you can try. Note I made this patch in github's web Ui so it's completely untested.
CI: use a recent nightly
- add #[no_mangle] to the panic_fmt lang item to adjust to changes in
the visibility algorithm
- adjust to changes in the layout of Cargo's target directory
- use a newer Xargo to reduce the build time of the sysroot (only core
is compiled as part of the sysroot now)
r? @alexcrichton
- add #[no_mangle] to the panic_fmt lang item to adjust to changes in
the visibility algorithm
- adjust to changes in the layout of Cargo's target directory
- use a newer Xargo to reduce the build time of the sysroot (only core
is compiled as part of the sysroot now)
this version uses the rust-src component that rustup installs instead
of fetching the source tarball from static.r-l.o, which sometimes went
wrong due to the fallible logic that Xargo 0.1.x used
`apt update` and `apt install` should be in the same Docker RUN statement, otherwise `apt update` will be cached and `apt install` will 404 if a package no longer exists.
mention that 'extern crate compiler_builtins' must be used
in some crate that's part of the dependency graph of the crate one's
building.
r? @alexcrichton
test the mips64 targets
These should be all the required changes I think but libloading can't be cross compiled for these new targets:
```
error: failed to run custom build command for `libloading v0.3.1`
process didn't exit successfully: `/target/debug/build/libloading-07147fe7fffab0b2/build-script-build`(exit code: 101)
--- stderr
thread 'main' panicked at 'could not get target info: TargetNotFound', ../src/libcore/result.rs:799
note: Run with `RUST_BACKTRACE=1` for a backtrace.
```
I've openend nagisa/rust_libloading#19 to track that. Wel'll have to wait until that's fixed.
cc @alexcrichton
Update CI configs
* Run on the master branch (to get previews)
* Pass --target on AppVeyor (oops)
* Use the current nightly for arm (I think that bug is fixed)
