We're stabilizing `async fn` in trait (AFIT), but we have some
reservations about how people might use this in the definitions of
publicly-visible traits, so we're going to lint about that.
This is a bit of an odd lint for `rustc`. We normally don't lint just
to have people confirm that they understand how Rust works. But in
this one exceptional case, this seems like the right thing to do as
compared to the other plausible alternatives.
In this commit, we describe the nature of this odd lint.
Add missing #[inline] on AsFd impl for sys::unix::fs::File
This operation should be extremely cheap, at most the `mov` of the underlying file descriptor, but due to this missing `#[inline]` it is currently a function call.
Print GHA log groups to stdout instead of stderr
In all other places (e.g. `bootstrap.py`, `opt-dist`), we use stdout instead of stderr. I think that using stderr might be causing some discrepancies in the log, where sometimes the contents of a group "leak" outside the group. Let's see what happens if we use stdout instead. It's possible that it will be worse, since we print most stuff to stderr (?).
r? `@ghost`
update jemalloc-sys to most recent release
I wouldn't expect this to show perf improvements: IIUC this release should only contain a bugfix.
cc `@nnethercote`
r? `@ghost`
Correct misleading std::fmt::Binary example (#116165)
Nothing too crazy...
- Add two to the width specifier (so all 32 bits are correctly displayed)
- Pad out the compared string so the assert passes
- Add `// Note` comment highlighting the need for the extra width when using the `#` flag.
The exact contents (and placement?) of the note are, of course, highly bikesheddable.
bootstrap: copy self-contained linking components to `stage0-sysroot`
I hit this issue while trying to bootstrap using a rustc where `rust-lld` is used by default: this was the cause of the failure to profile rustc-perf's bootstrap benchmark in https://github.com/rust-lang/rust/pull/113382.
`stage0-sysroot` currently only has libs and self-contained objects, not the other self-contained linking components yet. Most notably, it does not contain the linker and wrappers that we build, and that rustup distributes.
If you try to bootstrap using the bootstrap compiler's `rust-lld`, it will fail to link std at stage0 because `rust-lld` and the `gcc-ld` wrappers, will not be found in `stage0-sysroot/lib/rustlib/x86_64-unknown-linux-gnu/bin`.
This PR copies the `bin` directory next to the `lib` directory when `rust.lld` is enabled in the config (though maybe it could be done unconditionally, the fact that we need it to link does not necessarily mean that we'd want to build and provide it at stage1).
cc `@Kobzol` who also encountered this issue while using lld during bootstrap.
bootstrap major change detection implementation
The use of `changelog-seen` and `bootstrap/CHANGELOG.md` has not been functional in any way for many years. We often do major/breaking changes but never update the changelog file or the `changelog-seen`. This is an alternative method for tracking major or breaking changes and informing developers when such changes occur.
Example output when bootstrap detects a major change:
