Implement Extend<AsciiChar> for String
Implement `Extend<AsciiChar>` for `String` as suggested in https://github.com/rust-lang/rust/issues/110998#issuecomment-2590122968. Also implements `Extend<&AsciiChar>` since there's an analogous impl for `Extend<&char>`, but happy to remove if not thought useful.
r? `@scottmcm`
since you requested it, but no pressure to review!
Gets rid of two top-level UI tests which is always great.
Furthermore, move `need-crate-arg-ignore-tidy$x.rs`
from `command/` to `invalid-compile-flags/`.
`command/` concerns `std::process::Command` tests, not CLI tests.
llvm: Tolerate captures in tests
llvm/llvm-project@7e3735d1a1 introduces `captures` annotations. Adjust regexes to be tolerant of these.
`@rustbot` label:+llvm-main
add x86-sse2 (32bit) ABI that requires SSE2 target feature
This is the first commit of https://github.com/rust-lang/rust/pull/135408:
The primary goal of this is to make SSE2 required for our i686 targets (at least for the ones that use Pentium 4 as their baseline), to ensure they cannot be affected by https://github.com/rust-lang/rust/issues/114479. This has been MCPd in https://github.com/rust-lang/compiler-team/issues/808, and is tracked in https://github.com/rust-lang/rust/issues/133611.
We do this by defining a new ABI that these targets select, and making SSE2 required by the ABI (that's the first commit). That's kind of a hack, but it is the easiest way to make a target feature required via the target spec. In a follow-up change (https://github.com/rust-lang/rust/pull/135408), we can actually make use of SSE2 for the ABI, but that is running into some infrastructure issues.
r? `@workingjubilee`
try-job: aarch64-apple
try-job: aarch64-gnu
try-job: aarch64-gnu-debug
try-job: test-various
try-job: x86_64-gnu-nopt
try-job: dist-i586-gnu-i586-i686-musl
Normalize closure instance before eagerly monomorphizing it
We were monomorphizing two versions of the closure (or in the original issue, coroutine) -- one with normalized captures and one with unnormalized captures. This led to a symbol collision.
Fixes#137009
r? `@saethlin` or reassign
borrowck diagnostics cleanup: remove an unused and a barely-used field
This removes the fields `fr_is_local` and `outlived_fr_is_local` from the struct `ErrorConstraintInfo`. `fr_is_local` was fully unused, but wasn't caught by dead-code analysis. For symmetry, and since `outlived_fr_is_local` was used only once and is easy to recompute, I've removed it too. That makes its one use a bit longer, but constructing/destructuring an `ErrorConsraintInfo` now fits on one line.
Prepare standard library for Rust 2024 migration
This includes a variety of commits preparing the standard library for migration to Rust 2024.
The actual migration is blocked on a few things, so I wanted to get this out of the way in a relatively digestable PR.
Stabilize `const_is_char_boundary` and `const_str_split_at`.
Tracking issues: #131516, #131518
Stabilized const API:
```rs
// in `core`
impl str {
// const_is_char_boundary feature
const fn is_char_boundary(&self, index: usize) -> bool;
// const_str_split_at feature, depends on const_is_char_boundary
const fn split_at(&self, mid: usize) -> (&str, &str);
const fn split_at_mut(&mut self, mid: usize) -> (&mut str, &mut str);
const fn split_at_checked(&self, mid: usize) -> Option<(&str, &str)>;
const fn split_at_mut_checked(&mut self, mid: usize) -> Option<(&mut str, &mut str)>;
}
```
This will allow safely splitting string slices during const-eval.
Closes#131516, Closes#131518
This will need FCP.
r? libs-api
IIUC these do not use any new const language features (i.e. they are implementable manually on stable 1.83.0 using `unsafe`: [playground link](https://play.rust-lang.org/?version=stable&mode=debug&edition=2021&gist=3679632cd1041084796241b7ac8edfbd)).
Cc ``@rust-lang/wg-const-eval`` (I don't know if I have the permissions for this ping; if not, someone else please ping wg-const-eval if it is necessary)
Rollup of 9 pull requests
Successful merges:
- #135778 (account for `c_enum_min_bits` in `multiple-reprs` UI test)
- #136052 (Correct comment for FreeBSD and DragonFly BSD in unix/thread)
- #136886 (Remove the common prelude module)
- #136956 (add vendor directory to .gitignore)
- #136958 (Fix presentation of purely "additive" replacement suggestion parts)
- #136967 (Use `slice::fill` in `io::Repeat` implementation)
- #136976 (alloc boxed: docs: use MaybeUninit::write instead of as_mut_ptr)
- #137007 (Emit MIR for each bit with on `dont_reset_cast_kind_without_updating_operand`)
- #137008 (Move code into `rustc_mir_transform`)
r? `@ghost`
`@rustbot` modify labels: rollup
Move code into `rustc_mir_transform`
I found two modules in other crates that are better placed in `rustc_mir_transform`, because that's the only crate that uses them.
r? ``@matthewjasper``
Emit MIR for each bit with on `dont_reset_cast_kind_without_updating_operand`
PR #136450 introduced a diff that includes a pointer-sized alloc. This doesn't cause any problems on the compiler test suite but it affects the test suite that ferrocene has for `aarch64-unknown-none` as the snapshot of the diff only includes a 32-bit alloc even though this should be a 64-bit alloc on `aarch64-unknown-none`.
r? ``@compiler-errors``
alloc boxed: docs: use MaybeUninit::write instead of as_mut_ptr
In the deferred initialization pattern, the docs were needlessly going through `as_mut_ptr().write()` to initialize, which is unnecessary use of a pointer, needs to be inside an `unsafe` block, and may weaken alias analysis.
Fix presentation of purely "additive" replacement suggestion parts
#127541 changes replacement suggestions to use the "diff" view always, which I think is really verbose in cases where a replacement snippet is a "superset" of the snippet that is being replaced.
Consider:
```
LL - Self::Baz: Clone,
LL + Self::Baz: Clone, T: std::clone::Clone
```
In this code, we suggest replacing `", "` with `", T: std::clone::Clone"`. This is a consequence of how the snippet is constructed. I believe that since the string that is being replaced is a subset of the replacement string, it's not providing much value to present this as a diff. Users should be able to clearly understand what's being suggested here using the `~` underline view we've been suggesting for some time now.
Given that this affects ~100 tests out of the ~1000 UI tests affected, I expect this to be a pretty meaningful improvement of the fallout of #127541.
---
In the last commit, this PR also "trims" replacement parts so that they are turned into their purely additive subset, if possible. See the diff for what this means.
---
r? estebank
Remove the common prelude module
This fixes the issues described in https://github.com/rust-lang/rust/issues/136102. Primarily, this resolves some issues with how the documentation for the prelude is generated:
- It avoids showing "unstable" for macros in the prelude that are actually stable.
- Avoids duplication of some pages due to the previous lack of `doc(no_inline)`.
- Makes the different edition preludes consistent, and sets a pattern that can be used by future editions.
We may need to rearrange these modules in the future if we decide to remove anything from the prelude again. If we do, I think we should look into a different solution that avoids the documentation problems.
Closes https://github.com/rust-lang/rust/issues/136102
