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Stabilize unsafe_attributes #128771

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Aug 18, 2024
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@carbotaniuman carbotaniuman commented Aug 7, 2024

Stabilization report

Summary

This is a tracking issue for the RFC 3325: unsafe attributes

We are stabilizing #![feature(unsafe_attributes)], which makes certain attributes considered 'unsafe', meaning that they must be surrounded by an unsafe(...), as in #[unsafe(no_mangle)].

RFC: rust-lang/rfcs#3325
Tracking issue: #123757

What is stabilized

Summary of stabilization

Certain attributes will now be designated as unsafe attributes, namely, no_mangle, export_name, and link_section (stable only), and these attributes will need to be called by surrounding them in unsafe(...) syntax. On editions prior to 2024, this is simply an edition lint, but it will become a hard error in 2024. This also works in cfg_attr, but unsafe is not allowed for any other attributes, including proc-macros ones.

#[unsafe(no_mangle)]
fn a() {}

#[cfg_attr(any(), unsafe(export_name = "c"))]
fn b() {}

For a table showing the attributes that were considered to be included in the list to require unsafe, and subsequent reasoning about why each such attribute was or was not included, see this comment here

Tests

The relevant tests are in tests/ui/rust-2024/unsafe-attributes and tests/ui/attributes/unsafe.

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rustbot commented Aug 7, 2024

r? @nnethercote

rustbot has assigned @nnethercote.
They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.

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@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Aug 7, 2024
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Some changes occurred in src/tools/rustfmt

cc @rust-lang/rustfmt

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@tgross35 tgross35 added T-lang Relevant to the language team, which will review and decide on the PR/issue. needs-fcp This change is insta-stable, so needs a completed FCP to proceed. labels Aug 7, 2024
@carbotaniuman carbotaniuman force-pushed the stabilize_unsafe_attr branch from c143abc to de9b5c3 Compare August 7, 2024 08:12
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@rustbot labels +I-lang-nominated

Let's discuss this edition-relevant stabilization and let's propose...

@rfcbot fcp merge

@rustbot rustbot added the I-lang-nominated Nominated for discussion during a lang team meeting. label Aug 7, 2024
@rfcbot rfcbot added proposed-final-comment-period Proposed to merge/close by relevant subteam, see T-<team> label. Will enter FCP once signed off. disposition-merge This issue / PR is in PFCP or FCP with a disposition to merge it. labels Aug 7, 2024
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@rfcbot fcp cancel

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rfcbot commented Aug 7, 2024

@traviscross proposal cancelled.

@rfcbot rfcbot removed proposed-final-comment-period Proposed to merge/close by relevant subteam, see T-<team> label. Will enter FCP once signed off. disposition-merge This issue / PR is in PFCP or FCP with a disposition to merge it. labels Aug 7, 2024
@rust-lang rust-lang deleted a comment from rfcbot Aug 7, 2024
@traviscross traviscross removed the T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. label Aug 7, 2024
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@rfcbot fcp merge

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rfcbot commented Aug 7, 2024

Team member @traviscross has proposed to merge this. The next step is review by the rest of the tagged team members:

No concerns currently listed.

Once a majority of reviewers approve (and at most 2 approvals are outstanding), this will enter its final comment period. If you spot a major issue that hasn't been raised at any point in this process, please speak up!

cc @rust-lang/lang-advisors: FCP proposed for lang, please feel free to register concerns.
See this document for info about what commands tagged team members can give me.

@rfcbot rfcbot added proposed-final-comment-period Proposed to merge/close by relevant subteam, see T-<team> label. Will enter FCP once signed off. disposition-merge This issue / PR is in PFCP or FCP with a disposition to merge it. final-comment-period In the final comment period and will be merged soon unless new substantive objections are raised. and removed proposed-final-comment-period Proposed to merge/close by relevant subteam, see T-<team> label. Will enter FCP once signed off. labels Aug 7, 2024
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rfcbot commented Aug 7, 2024

🔔 This is now entering its final comment period, as per the review above. 🔔

@traviscross traviscross removed the I-lang-nominated Nominated for discussion during a lang team meeting. label Aug 7, 2024
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The code changes look fine. r=me once the FCP is finished.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Aug 17, 2024
tgross35 added a commit to tgross35/rust that referenced this pull request Aug 17, 2024
…r, r=nnethercote

Stabilize `unsafe_attributes`

# Stabilization report

## Summary

This is a tracking issue for the RFC 3325: unsafe attributes

We are stabilizing `#![feature(unsafe_attributes)]`,  which makes certain attributes considered 'unsafe', meaning that they must be surrounded by an `unsafe(...)`, as in `#[unsafe(no_mangle)]`.

RFC: rust-lang/rfcs#3325
Tracking issue: rust-lang#123757

## What is stabilized

### Summary of stabilization

Certain attributes will now be designated as unsafe attributes, namely, `no_mangle`, `export_name`, and `link_section` (stable only), and these attributes will need to be called by surrounding them in `unsafe(...)` syntax. On editions prior to 2024, this is simply an edition lint, but it will become a hard error in 2024. This also works in `cfg_attr`, but `unsafe` is not allowed for any other attributes, including proc-macros ones.

```rust
#[unsafe(no_mangle)]
fn a() {}

#[cfg_attr(any(), unsafe(export_name = "c"))]
fn b() {}
```

For a table showing the attributes that were considered to be included in the list to require unsafe, and subsequent reasoning about why each such attribute was or was not included, see [this comment here](rust-lang#124214 (comment))

## Tests

The relevant tests are in `tests/ui/rust-2024/unsafe-attributes` and `tests/ui/attributes/unsafe`.
bors added a commit to rust-lang-ci/rust that referenced this pull request Aug 17, 2024
Rollup of 6 pull requests

Successful merges:

 - rust-lang#128771 (Stabilize `unsafe_attributes`)
 - rust-lang#128982 (Re-enable more debuginfo tests on Windows)
 - rust-lang#129115 (Re-enable `dump-ice-to-disk` for Windows)
 - rust-lang#129173 (Fix `is_val_statically_known` for floats)
 - rust-lang#129185 (Port `run-make/libtest-json/validate_json.py` to Rust)
 - rust-lang#129190 (Added f16 and f128 to tests/ui/consts/const-float-bits-conv.rs)

r? `@ghost`
`@rustbot` modify labels: rollup
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bors commented Aug 17, 2024

⌛ Testing commit de9b5c3 with merge 37d56da...

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bors commented Aug 18, 2024

☀️ Test successful - checks-actions
Approved by: nnethercote
Pushing 37d56da to master...

@bors bors added the merged-by-bors This PR was explicitly merged by bors. label Aug 18, 2024
@bors bors merged commit 37d56da into rust-lang:master Aug 18, 2024
7 checks passed
@rustbot rustbot added this to the 1.82.0 milestone Aug 18, 2024
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Finished benchmarking commit (37d56da): comparison URL.

Overall result: ✅ improvements - no action needed

@rustbot label: -perf-regression

Instruction count

This is a highly reliable metric that was used to determine the overall result at the top of this comment.

mean range count
Regressions ❌
(primary)
- - 0
Regressions ❌
(secondary)
- - 0
Improvements ✅
(primary)
- - 0
Improvements ✅
(secondary)
-0.2% [-0.2%, -0.2%] 3
All ❌✅ (primary) - - 0

Max RSS (memory usage)

Results (primary 3.6%, secondary 4.1%)

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

mean range count
Regressions ❌
(primary)
3.6% [3.6%, 3.6%] 1
Regressions ❌
(secondary)
4.1% [2.4%, 5.0%] 3
Improvements ✅
(primary)
- - 0
Improvements ✅
(secondary)
- - 0
All ❌✅ (primary) 3.6% [3.6%, 3.6%] 1

Cycles

Results (primary 2.7%)

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

mean range count
Regressions ❌
(primary)
2.7% [2.7%, 2.7%] 1
Regressions ❌
(secondary)
- - 0
Improvements ✅
(primary)
- - 0
Improvements ✅
(secondary)
- - 0
All ❌✅ (primary) 2.7% [2.7%, 2.7%] 1

Binary size

This benchmark run did not return any relevant results for this metric.

Bootstrap: 749.471s -> 750.905s (0.19%)
Artifact size: 339.10 MiB -> 339.10 MiB (0.00%)

@carbotaniuman carbotaniuman deleted the stabilize_unsafe_attr branch August 18, 2024 03:19
@ehuss ehuss added the relnotes Marks issues that should be documented in the release notes of the next release. label Aug 20, 2024
@apiraino apiraino removed the to-announce Announce this issue on triage meeting label Aug 22, 2024
@Mark-Simulacrum Mark-Simulacrum added relnotes Marks issues that should be documented in the release notes of the next release. and removed relnotes Marks issues that should be documented in the release notes of the next release. labels Aug 25, 2024
compiler-errors pushed a commit to compiler-errors/rust that referenced this pull request Sep 16, 2024
… r=nnethercote

Stabilize `unsafe_attributes`

# Stabilization report

## Summary

This is a tracking issue for the RFC 3325: unsafe attributes

We are stabilizing `#![feature(unsafe_attributes)]`,  which makes certain attributes considered 'unsafe', meaning that they must be surrounded by an `unsafe(...)`, as in `#[unsafe(no_mangle)]`.

RFC: rust-lang/rfcs#3325
Tracking issue: rust-lang#123757

## What is stabilized

### Summary of stabilization

Certain attributes will now be designated as unsafe attributes, namely, `no_mangle`, `export_name`, and `link_section` (stable only), and these attributes will need to be called by surrounding them in `unsafe(...)` syntax. On editions prior to 2024, this is simply an edition lint, but it will become a hard error in 2024. This also works in `cfg_attr`, but `unsafe` is not allowed for any other attributes, including proc-macros ones.

```rust
#[unsafe(no_mangle)]
fn a() {}

#[cfg_attr(any(), unsafe(export_name = "c"))]
fn b() {}
```

For a table showing the attributes that were considered to be included in the list to require unsafe, and subsequent reasoning about why each such attribute was or was not included, see [this comment here](rust-lang#124214 (comment))

## Tests

The relevant tests are in `tests/ui/rust-2024/unsafe-attributes` and `tests/ui/attributes/unsafe`.
tmeijn pushed a commit to tmeijn/dotfiles that referenced this pull request Oct 18, 2024
This MR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [rust](https://github.com/rust-lang/rust) | minor | `1.81.0` -> `1.82.0` |

MR created with the help of [el-capitano/tools/renovate-bot](https://gitlab.com/el-capitano/tools/renovate-bot).

**Proposed changes to behavior should be submitted there as MRs.**

---

### Release Notes

<details>
<summary>rust-lang/rust (rust)</summary>

### [`v1.82.0`](https://github.com/rust-lang/rust/blob/HEAD/RELEASES.md#Version-1820-2024-10-17)

[Compare Source](rust-lang/rust@1.81.0...1.82.0)

\==========================

<a id="1.82.0-Language"></a>

## Language

-   [Don't make statement nonterminals match pattern nonterminals](rust-lang/rust#120221)
-   [Patterns matching empty types can now be omitted in common cases](rust-lang/rust#122792)
-   [Enforce supertrait outlives obligations when using trait impls](rust-lang/rust#124336)
-   [`addr_of(_mut)!` macros and the newly stabilized `&raw (const|mut)` are now safe to use with all static items](rust-lang/rust#125834)
-   [size_of_val_raw: for length 0 this is safe to call](rust-lang/rust#126152)
-   [Reorder trait bound modifiers *after* `for<...>` binder in trait bounds](rust-lang/rust#127054)
-   [Stabilize opaque type precise capturing (RFC 3617)](rust-lang/rust#127672)
-   [Stabilize `&raw const` and `&raw mut` operators (RFC 2582)](rust-lang/rust#127679)
-   [Stabilize unsafe extern blocks (RFC 3484)](rust-lang/rust#127921)
-   [Stabilize nested field access in `offset_of!`](rust-lang/rust#128284)
-   [Do not require `T` to be live when dropping `[T; 0]`](rust-lang/rust#128438)
-   [Stabilize `const` operands in inline assembly](rust-lang/rust#128570)
-   [Stabilize floating-point arithmetic in `const fn`](rust-lang/rust#128596)
-   [Stabilize explicit opt-in to unsafe attributes](rust-lang/rust#128771)
-   [Document NaN bit patterns guarantees](rust-lang/rust#129559)

<a id="1.82.0-Compiler"></a>

## Compiler

-   [Promote riscv64gc-unknown-linux-musl to tier 2](rust-lang/rust#122049)
-   [Promote Mac Catalyst targets `aarch64-apple-ios-macabi` and `x86_64-apple-ios-macabi` to Tier 2, and ship them with rustup](rust-lang/rust#126450)
-   [Add tier 3 NuttX based targets for RISC-V and ARM](rust-lang/rust#127755)
-   [Add tier 3 powerpc-unknown-linux-muslspe target](rust-lang/rust#127905)
-   [Improved diagnostics to explain why a pattern is unreachable](rust-lang/rust#128034)
-   [The compiler now triggers the unreachable code warning properly for async functions that don't return/are `-> !`](rust-lang/rust#128443)
-   [Promote `aarch64-apple-darwin` to Tier 1](rust-lang/rust#128592)
-   [Add Trusty OS target `aarch64-unknown-trusty` and `armv7-unknown-trusty` as tier 3 targets](rust-lang/rust#129490)
-   [Promote `wasm32-wasip2` to Tier 2.](rust-lang/rust#126967)

<a id="1.82.0-Libraries"></a>

## Libraries

-   [Generalize `{Rc,Arc}::make_mut()` to `Path`, `OsStr`, and `CStr`.](rust-lang/rust#126877)

<a id="1.82.0-Stabilized-APIs"></a>

## Stabilized APIs

-   [`std::thread::Builder::spawn_unchecked`](https://doc.rust-lang.org/stable/std/thread/struct.Builder.html#method.spawn_unchecked)
-   [`std::str::CharIndices::offset`](https://doc.rust-lang.org/nightly/std/str/struct.CharIndices.html#method.offset)
-   [`std::option::Option::is_none_or`](https://doc.rust-lang.org/nightly/std/option/enum.Option.html#method.is_none_or)
-   [`[T]::is_sorted`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.is_sorted)
-   [`[T]::is_sorted_by`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.is_sorted_by)
-   [`[T]::is_sorted_by_key`](https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.is_sorted_by_key)
-   [`Iterator::is_sorted`](https://doc.rust-lang.org/nightly/std/iter/trait.Iterator.html#method.is_sorted)
-   [`Iterator::is_sorted_by`](https://doc.rust-lang.org/nightly/std/iter/trait.Iterator.html#method.is_sorted_by)
-   [`Iterator::is_sorted_by_key`](https://doc.rust-lang.org/nightly/std/iter/trait.Iterator.html#method.is_sorted_by_key)
-   [`std::future::Ready::into_inner`](https://doc.rust-lang.org/nightly/std/future/struct.Ready.html#method.into_inner)
-   [`std::iter::repeat_n`](https://doc.rust-lang.org/nightly/std/iter/fn.repeat_n.html)
-   [`impl<T: Clone> DoubleEndedIterator for Take<Repeat<T>>`](https://doc.rust-lang.org/nightly/std/iter/struct.Take.html#impl-DoubleEndedIterator-for-Take%3CRepeat%3CT%3E%3E)
-   [`impl<T: Clone> ExactSizeIterator for Take<Repeat<T>>`](https://doc.rust-lang.org/nightly/std/iter/struct.Take.html#impl-ExactSizeIterator-for-Take%3CRepeat%3CT%3E%3E)
-   [`impl<T: Clone> ExactSizeIterator for Take<RepeatWith<T>>`](https://doc.rust-lang.org/nightly/std/iter/struct.Take.html#impl-ExactSizeIterator-for-Take%3CRepeatWith%3CF%3E%3E)
-   [`impl Default for std::collections::binary_heap::Iter`](https://doc.rust-lang.org/nightly/std/collections/binary_heap/struct.Iter.html#impl-Default-for-Iter%3C'\_,+T%3E)
-   [`impl Default for std::collections::btree_map::RangeMut`](https://doc.rust-lang.org/nightly/std/collections/btree_map/struct.RangeMut.html#impl-Default-for-RangeMut%3C'\_,+K,+V%3E)
-   [`impl Default for std::collections::btree_map::ValuesMut`](https://doc.rust-lang.org/nightly/std/collections/btree_map/struct.ValuesMut.html#impl-Default-for-ValuesMut%3C'\_,+K,+V%3E)
-   [`impl Default for std::collections::vec_deque::Iter`](https://doc.rust-lang.org/nightly/std/collections/vec_deque/struct.Iter.html#impl-Default-for-Iter%3C'\_,+T%3E)
-   [`impl Default for std::collections::vec_deque::IterMut`](https://doc.rust-lang.org/nightly/std/collections/vec_deque/struct.IterMut.html#impl-Default-for-IterMut%3C'\_,+T%3E)
-   [`Rc<T>::new_uninit`](https://doc.rust-lang.org/nightly/std/rc/struct.Rc.html#method.new_uninit)
-   [`Rc<T>::assume_init`](https://doc.rust-lang.org/nightly/std/rc/struct.Rc.html#method.assume_init)
-   [`Rc<[T]>::new_uninit_slice`](https://doc.rust-lang.org/nightly/std/rc/struct.Rc.html#method.new_uninit_slice)
-   [`Rc<[MaybeUninit<T>]>::assume_init`](https://doc.rust-lang.org/nightly/std/rc/struct.Rc.html#method.assume_init-1)
-   [`Arc<T>::new_uninit`](https://doc.rust-lang.org/nightly/std/sync/struct.Arc.html#method.new_uninit)
-   [`Arc<T>::assume_init`](https://doc.rust-lang.org/nightly/std/sync/struct.Arc.html#method.assume_init)
-   [`Arc<[T]>::new_uninit_slice`](https://doc.rust-lang.org/nightly/std/sync/struct.Arc.html#method.new_uninit_slice)
-   [`Arc<[MaybeUninit<T>]>::assume_init`](https://doc.rust-lang.org/nightly/std/sync/struct.Arc.html#method.assume_init-1)
-   [`Box<T>::new_uninit`](https://doc.rust-lang.org/nightly/std/boxed/struct.Box.html#method.new_uninit)
-   [`Box<T>::assume_init`](https://doc.rust-lang.org/nightly/std/boxed/struct.Box.html#method.assume_init)
-   [`Box<[T]>::new_uninit_slice`](https://doc.rust-lang.org/nightly/std/boxed/struct.Box.html#method.new_uninit_slice)
-   [`Box<[MaybeUninit<T>]>::assume_init`](https://doc.rust-lang.org/nightly/std/boxed/struct.Box.html#method.assume_init-1)
-   [`core::arch::x86_64::_bextri_u64`](https://doc.rust-lang.org/stable/core/arch/x86\_64/fn.\_bextri_u64.html)
-   [`core::arch::x86_64::_bextri_u32`](https://doc.rust-lang.org/stable/core/arch/x86\_64/fn.\_bextri_u32.html)
-   [`core::arch::x86::_mm_broadcastsi128_si256`](https://doc.rust-lang.org/stable/core/arch/x86/fn.\_mm_broadcastsi128\_si256.html)
-   [`core::arch::x86::_mm256_stream_load_si256`](https://doc.rust-lang.org/stable/core/arch/x86/fn.\_mm256\_stream_load_si256.html)
-   [`core::arch::x86::_tzcnt_u16`](https://doc.rust-lang.org/stable/core/arch/x86/fn.\_tzcnt_u16.html)
-   [`core::arch::x86::_mm_extracti_si64`](https://doc.rust-lang.org/stable/core/arch/x86/fn.\_mm_extracti_si64.html)
-   [`core::arch::x86::_mm_inserti_si64`](https://doc.rust-lang.org/stable/core/arch/x86/fn.\_mm_inserti_si64.html)
-   [`core::arch::x86::_mm_storeu_si16`](https://doc.rust-lang.org/stable/core/arch/x86/fn.\_mm_storeu_si16.html)
-   [`core::arch::x86::_mm_storeu_si32`](https://doc.rust-lang.org/stable/core/arch/x86/fn.\_mm_storeu_si32.html)
-   [`core::arch::x86::_mm_storeu_si64`](https://doc.rust-lang.org/stable/core/arch/x86/fn.\_mm_storeu_si64.html)
-   [`core::arch::x86::_mm_loadu_si16`](https://doc.rust-lang.org/stable/core/arch/x86/fn.\_mm_loadu_si16.html)
-   [`core::arch::x86::_mm_loadu_si32`](https://doc.rust-lang.org/stable/core/arch/x86/fn.\_mm_loadu_si32.html)
-   [`core::arch::wasm32::u8x16_relaxed_swizzle`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.u8x16\_relaxed_swizzle.html)
-   [`core::arch::wasm32::i8x16_relaxed_swizzle`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.i8x16\_relaxed_swizzle.html)
-   [`core::arch::wasm32::i32x4_relaxed_trunc_f32x4`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.i32x4\_relaxed_trunc_f32x4.html)
-   [`core::arch::wasm32::u32x4_relaxed_trunc_f32x4`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.u32x4\_relaxed_trunc_f32x4.html)
-   [`core::arch::wasm32::i32x4_relaxed_trunc_f64x2_zero`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.i32x4\_relaxed_trunc_f64x2\_zero.html)
-   [`core::arch::wasm32::u32x4_relaxed_trunc_f64x2_zero`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.u32x4\_relaxed_trunc_f64x2\_zero.html)
-   [`core::arch::wasm32::f32x4_relaxed_madd`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.f32x4\_relaxed_madd.html)
-   [`core::arch::wasm32::f32x4_relaxed_nmadd`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.f32x4\_relaxed_nmadd.html)
-   [`core::arch::wasm32::f64x2_relaxed_madd`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.f64x2\_relaxed_madd.html)
-   [`core::arch::wasm32::f64x2_relaxed_nmadd`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.f64x2\_relaxed_nmadd.html)
-   [`core::arch::wasm32::i8x16_relaxed_laneselect`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.i8x16\_relaxed_laneselect.html)
-   [`core::arch::wasm32::u8x16_relaxed_laneselect`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.u8x16\_relaxed_laneselect.html)
-   [`core::arch::wasm32::i16x8_relaxed_laneselect`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.i16x8\_relaxed_laneselect.html)
-   [`core::arch::wasm32::u16x8_relaxed_laneselect`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.u16x8\_relaxed_laneselect.html)
-   [`core::arch::wasm32::i32x4_relaxed_laneselect`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.i32x4\_relaxed_laneselect.html)
-   [`core::arch::wasm32::u32x4_relaxed_laneselect`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.u32x4\_relaxed_laneselect.html)
-   [`core::arch::wasm32::i64x2_relaxed_laneselect`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.i64x2\_relaxed_laneselect.html)
-   [`core::arch::wasm32::u64x2_relaxed_laneselect`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.u64x2\_relaxed_laneselect.html)
-   [`core::arch::wasm32::f32x4_relaxed_min`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.f32x4\_relaxed_min.html)
-   [`core::arch::wasm32::f32x4_relaxed_max`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.f32x4\_relaxed_max.html)
-   [`core::arch::wasm32::f64x2_relaxed_min`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.f64x2\_relaxed_min.html)
-   [`core::arch::wasm32::f64x2_relaxed_max`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.f64x2\_relaxed_max.html)
-   [`core::arch::wasm32::i16x8_relaxed_q15mulr`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.i16x8\_relaxed_q15mulr.html)
-   [`core::arch::wasm32::u16x8_relaxed_q15mulr`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.u16x8\_relaxed_q15mulr.html)
-   [`core::arch::wasm32::i16x8_relaxed_dot_i8x16_i7x16`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.i16x8\_relaxed_dot_i8x16\_i7x16.html)
-   [`core::arch::wasm32::u16x8_relaxed_dot_i8x16_i7x16`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.u16x8\_relaxed_dot_i8x16\_i7x16.html)
-   [`core::arch::wasm32::i32x4_relaxed_dot_i8x16_i7x16_add`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.i32x4\_relaxed_dot_i8x16\_i7x16\_add.html)
-   [`core::arch::wasm32::u32x4_relaxed_dot_i8x16_i7x16_add`](https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.u32x4\_relaxed_dot_i8x16\_i7x16\_add.html)

These APIs are now stable in const contexts:

-   [`std::task::Waker::from_raw`](https://doc.rust-lang.org/nightly/std/task/struct.Waker.html#method.from_raw)
-   [`std::task::Context::from_waker`](https://doc.rust-lang.org/nightly/std/task/struct.Context.html#method.from_waker)
-   [`std::task::Context::waker`](https://doc.rust-lang.org/nightly/std/task/struct.Context.html#method.waker)
-   [`$integer::from_str_radix`](https://doc.rust-lang.org/nightly/std/primitive.u32.html#method.from_str_radix)
-   [`std::num::ParseIntError::kind`](https://doc.rust-lang.org/nightly/std/num/struct.ParseIntError.html#method.kind)

<a id="1.82.0-Cargo"></a>

## Cargo

-   [feat: Add `info` cargo subcommand](rust-lang/cargo#14141)

<a id="1.82.0-Compatibility-Notes"></a>

## Compatibility Notes

-   We now [disallow setting some built-in cfgs via the command-line](rust-lang/rust#126158) with the newly added [`explicit_builtin_cfgs_in_flags`](https://doc.rust-lang.org/rustc/lints/listing/deny-by-default.html#explicit-builtin-cfgs-in-flags) lint in order to prevent incoherent state, eg. `windows` cfg active but target is Linux based. The appropriate [`rustc` flag](https://doc.rust-lang.org/rustc/command-line-arguments.html) should be used instead.
-   The standard library has a new implementation of `binary_search` which is significantly improves performance ([#&#8203;128254](rust-lang/rust#128254)). However when a sorted slice has multiple values which compare equal, the new implementation may select a different value among the equal ones than the old implementation.
-   [illumos/Solaris now sets `MSG_NOSIGNAL` when writing to sockets](rust-lang/rust#128259). This avoids killing the process with SIGPIPE when writing to a closed socket, which matches the existing behavior on other UNIX targets.
-   [Removes a problematic hack that always passed the --whole-archive linker flag for tests, which may cause linker errors for code accidentally relying on it.](rust-lang/rust#128400)
-   The WebAssembly target features `multivalue` and `reference-types` are now
    both enabled by default. These two features both have subtle changes implied
    for generated WebAssembly binaries. For the `multivalue` feature, WebAssembly
    target support has changed when upgrading to LLVM 19. Support for generating
    functions with multiple returns no longer works and
    `-Ctarget-feature=+multivalue` has a different meaning than it did in LLVM 18
    and prior. There is no longer any supported means to generate a module that has
    a function with multiple returns in WebAssembly from Rust source code. For the
    `reference-types` feature the encoding of immediates in the `call_indirect`, a
    commonly used instruction by the WebAssembly backend, has changed. Validators
    and parsers which don't understand the `reference-types` proposal will no
    longer accept modules produced by LLVM due to this change in encoding of
    immediates. Additionally these features being enabled are encoded in the
    `target_features` custom section and may affect downstream tooling such as
    `wasm-opt` consuming the module. Generating a WebAssembly module that disables
    default features requires `-Zbuild-std` support from Cargo and more information
    can be found at
    [rust-lang/rust#128511](rust-lang/rust#128511).
-   [Rust now raises unsafety errors for union patterns in parameter-position](rust-lang/rust#130531)

<a id="1.82.0-Internal-Changes"></a>

## Internal Changes

These changes do not affect any public interfaces of Rust, but they represent
significant improvements to the performance or internals of rustc and related
tools.

-   [Update to LLVM 19](rust-lang/rust#127513)

</details>

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qryxip added a commit to qryxip/voicevox_core that referenced this pull request Oct 19, 2024
Rustを1.82.0に上げてClippyの対応を行うとともに、次の新機能を利用する。

- `unsafe_attributes` (rust-lang/rust#128771)
- `raw_ref_op` (rust-lang/rust#127679)
qryxip added a commit to qryxip/voicevox_core that referenced this pull request Oct 19, 2024
Rustを1.82.0に上げてClippyの対応を行うとともに、次の新機能を利用する。

- `unsafe_attributes` (rust-lang/rust#128771)
- `raw_ref_op` (rust-lang/rust#127679)
qryxip added a commit to qryxip/voicevox_core that referenced this pull request Oct 19, 2024
Rustを1.82.0に上げてClippyの対応を行うとともに、次の新機能を利用する。

- `unsafe_attributes` (rust-lang/rust#128771)
- `raw_ref_op` (rust-lang/rust#127679)
qryxip added a commit to qryxip/voicevox_core that referenced this pull request Oct 19, 2024
Rustを1.82.0に上げてClippyの対応を行うとともに、次の新機能を利用する。

- `unsafe_attributes` (rust-lang/rust#128771)
- `raw_ref_op` (rust-lang/rust#127679)
qryxip added a commit to VOICEVOX/voicevox_core that referenced this pull request Oct 20, 2024
Rustを1.82.0に上げてClippyの対応を行うとともに、次の新機能を利用する。

- `unsafe_attributes` (rust-lang/rust#128771)
- `raw_ref_op` (rust-lang/rust#127679)
wip-sync pushed a commit to NetBSD/pkgsrc-wip that referenced this pull request Oct 27, 2024
Pkgsrc changes:
 * Adapt patches, apply to new vendored crates where needed.
 * Back-port rust pull request 130110, "make dist vendoring configurable"
 * Disable "dist vendoring", otherwise cargo would try to access
   the network during the build phase.

Upstream changes:

Version 1.82.0 (2024-10-17)
==========================

Language
--------
- [Don't make statement nonterminals match pattern nonterminals]
  (rust-lang/rust#120221)
- [Patterns matching empty types can now be omitted in common cases]
  (rust-lang/rust#122792)
- [Enforce supertrait outlives obligations when using trait impls]
  (rust-lang/rust#124336)
- [`addr_of(_mut)!` macros and the newly stabilized `&raw (const|mut)`
  are now safe to use with all static items]
  (rust-lang/rust#125834)
- [size_of_val_raw: for length 0 this is safe to call]
  (rust-lang/rust#126152)
- [Reorder trait bound modifiers *after* `for<...>` binder in trait bounds]
  (rust-lang/rust#127054)
- [Stabilize opaque type precise capturing (RFC 3617)]
  (rust-lang/rust#127672)
- [Stabilize `&raw const` and `&raw mut` operators (RFC 2582)]
  (rust-lang/rust#127679)
- [Stabilize unsafe extern blocks (RFC 3484)]
  (rust-lang/rust#127921)
- [Stabilize nested field access in `offset_of!`]
  (rust-lang/rust#128284)
- [Do not require `T` to be live when dropping `[T; 0]`]
  (rust-lang/rust#128438)
- [Stabilize `const` operands in inline assembly]
  (rust-lang/rust#128570)
- [Stabilize floating-point arithmetic in `const fn`]
  (rust-lang/rust#128596)
- [Stabilize explicit opt-in to unsafe attributes]
  (rust-lang/rust#128771)
- [Document NaN bit patterns guarantees]
  (rust-lang/rust#129559)

Compiler
--------
- [Promote riscv64gc-unknown-linux-musl to tier 2]
  (rust-lang/rust#122049)
- [Promote Mac Catalyst targets `aarch64-apple-ios-macabi` and
  `x86_64-apple-ios-macabi` to Tier 2, and ship them with rustup]
  (rust-lang/rust#126450)
- [Add tier 3 NuttX based targets for RISC-V and ARM]
  (rust-lang/rust#127755)
- [Add tier 3 powerpc-unknown-linux-muslspe target]
  (rust-lang/rust#127905)
- [Improved diagnostics to explain why a pattern is unreachable]
  (rust-lang/rust#128034)
- [The compiler now triggers the unreachable code warning properly
  for async functions that don't return/are `-> !`]
  (rust-lang/rust#128443)
- [Promote `aarch64-apple-darwin` to Tier 1]
  (rust-lang/rust#128592)
- [Add Trusty OS target `aarch64-unknown-trusty` and `armv7-unknown-trusty`
  as tier 3 targets] (rust-lang/rust#129490)
- [Promote `wasm32-wasip2` to Tier 2.]
  (rust-lang/rust#126967)

Libraries
---------
- [Generalize `{Rc,Arc}::make_mut()` to `Path`, `OsStr`, and `CStr`.]
  (rust-lang/rust#126877)

Stabilized APIs
---------------
- [`std::thread::Builder::spawn_unchecked`]
  (https://doc.rust-lang.org/stable/std/thread/struct.Builder.html#method.spawn_unchecked)
- [`std::str::CharIndices::offset`]
  (https://doc.rust-lang.org/nightly/std/str/struct.CharIndices.html#method.offset)
- [`std::option::Option::is_none_or`]
  (https://doc.rust-lang.org/nightly/std/option/enum.Option.html#method.is_none_or)
- [`[T]::is_sorted`]
  (https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.is_sorted)
- [`[T]::is_sorted_by`]
  (https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.is_sorted_by)
- [`[T]::is_sorted_by_key`]
  (https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.is_sorted_by_key)
- [`Iterator::is_sorted`]
  (https://doc.rust-lang.org/nightly/std/iter/trait.Iterator.html#method.is_sorted)
- [`Iterator::is_sorted_by`]
  (https://doc.rust-lang.org/nightly/std/iter/trait.Iterator.html#method.is_sorted_by)
- [`Iterator::is_sorted_by_key`]
  (https://doc.rust-lang.org/nightly/std/iter/trait.Iterator.html#method.is_sorted_by_key)
- [`std::future::Ready::into_inner`]
  (https://doc.rust-lang.org/nightly/std/future/struct.Ready.html#method.into_inner)
- [`std::iter::repeat_n`]
  (https://doc.rust-lang.org/nightly/std/iter/fn.repeat_n.html)
- [`impl<T: Clone> DoubleEndedIterator for Take<Repeat<T>>`]
  (https://doc.rust-lang.org/nightly/std/iter/struct.Take.html#impl-DoubleEndedIterator-for-Take%3CRepeat%3CT%3E%3E)
- [`impl<T: Clone> ExactSizeIterator for Take<Repeat<T>>`]
  (https://doc.rust-lang.org/nightly/std/iter/struct.Take.html#impl-ExactSizeIterator-for-Take%3CRepeat%3CT%3E%3E)
- [`impl<T: Clone> ExactSizeIterator for Take<RepeatWith<T>>`]
  (https://doc.rust-lang.org/nightly/std/iter/struct.Take.html#impl-ExactSizeIterator-for-Take%3CRepeatWith%3CF%3E%3E)
- [`impl Default for std::collections::binary_heap::Iter`]
  (https://doc.rust-lang.org/nightly/std/collections/binary_heap/struct.Iter.html#impl-Default-for-Iter%3C'_,+T%3E)
- [`impl Default for std::collections::btree_map::RangeMut`]
  (https://doc.rust-lang.org/nightly/std/collections/btree_map/struct.RangeMut.html#impl-Default-for-RangeMut%3C'_,+K,+V%3E)
- [`impl Default for std::collections::btree_map::ValuesMut`]
  (https://doc.rust-lang.org/nightly/std/collections/btree_map/struct.ValuesMut.html#impl-Default-for-ValuesMut%3C'_,+K,+V%3E)
- [`impl Default for std::collections::vec_deque::Iter`]
  (https://doc.rust-lang.org/nightly/std/collections/vec_deque/struct.Iter.html#impl-Default-for-Iter%3C'_,+T%3E)
- [`impl Default for std::collections::vec_deque::IterMut`]
  (https://doc.rust-lang.org/nightly/std/collections/vec_deque/struct.IterMut.html#impl-Default-for-IterMut%3C'_,+T%3E)
- [`Rc<T>::new_uninit`]
  (https://doc.rust-lang.org/nightly/std/rc/struct.Rc.html#method.new_uninit)
- [`Rc<T>::assume_init`]
  (https://doc.rust-lang.org/nightly/std/rc/struct.Rc.html#method.assume_init)
- [`Rc<[T]>::new_uninit_slice`]
  (https://doc.rust-lang.org/nightly/std/rc/struct.Rc.html#method.new_uninit_slice)
- [`Rc<[MaybeUninit<T>]>::assume_init`]
  (https://doc.rust-lang.org/nightly/std/rc/struct.Rc.html#method.assume_init-1)
- [`Arc<T>::new_uninit`]
  (https://doc.rust-lang.org/nightly/std/sync/struct.Arc.html#method.new_uninit)
- [`Arc<T>::assume_init`]
  (https://doc.rust-lang.org/nightly/std/sync/struct.Arc.html#method.assume_init)
- [`Arc<[T]>::new_uninit_slice`]
  (https://doc.rust-lang.org/nightly/std/sync/struct.Arc.html#method.new_uninit_slice)
- [`Arc<[MaybeUninit<T>]>::assume_init`]
  (https://doc.rust-lang.org/nightly/std/sync/struct.Arc.html#method.assume_init-1)
- [`Box<T>::new_uninit`]
  (https://doc.rust-lang.org/nightly/std/boxed/struct.Box.html#method.new_uninit)
- [`Box<T>::assume_init`]
  (https://doc.rust-lang.org/nightly/std/boxed/struct.Box.html#method.assume_init)
- [`Box<[T]>::new_uninit_slice`]
  (https://doc.rust-lang.org/nightly/std/boxed/struct.Box.html#method.new_uninit_slice)
- [`Box<[MaybeUninit<T>]>::assume_init`]
  (https://doc.rust-lang.org/nightly/std/boxed/struct.Box.html#method.assume_init-1)
- [`core::arch::x86_64::_bextri_u64`]
  (https://doc.rust-lang.org/stable/core/arch/x86_64/fn._bextri_u64.html)
- [`core::arch::x86_64::_bextri_u32`]
  (https://doc.rust-lang.org/stable/core/arch/x86_64/fn._bextri_u32.html)
- [`core::arch::x86::_mm_broadcastsi128_si256`]
  (https://doc.rust-lang.org/stable/core/arch/x86/fn._mm_broadcastsi128_si256.html)
- [`core::arch::x86::_mm256_stream_load_si256`]
  (https://doc.rust-lang.org/stable/core/arch/x86/fn._mm256_stream_load_si256.html)
- [`core::arch::x86::_tzcnt_u16`]
  (https://doc.rust-lang.org/stable/core/arch/x86/fn._tzcnt_u16.html)
- [`core::arch::x86::_mm_extracti_si64`]
  (https://doc.rust-lang.org/stable/core/arch/x86/fn._mm_extracti_si64.html)
- [`core::arch::x86::_mm_inserti_si64`]
  (https://doc.rust-lang.org/stable/core/arch/x86/fn._mm_inserti_si64.html)
- [`core::arch::x86::_mm_storeu_si16`]
  (https://doc.rust-lang.org/stable/core/arch/x86/fn._mm_storeu_si16.html)
- [`core::arch::x86::_mm_storeu_si32`]
  (https://doc.rust-lang.org/stable/core/arch/x86/fn._mm_storeu_si32.html)
- [`core::arch::x86::_mm_storeu_si64`]
  (https://doc.rust-lang.org/stable/core/arch/x86/fn._mm_storeu_si64.html)
- [`core::arch::x86::_mm_loadu_si16`]
  (https://doc.rust-lang.org/stable/core/arch/x86/fn._mm_loadu_si16.html)
- [`core::arch::x86::_mm_loadu_si32`]
  (https://doc.rust-lang.org/stable/core/arch/x86/fn._mm_loadu_si32.html)
- [`core::arch::wasm32::u8x16_relaxed_swizzle`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.u8x16_relaxed_swizzle.html)
- [`core::arch::wasm32::i8x16_relaxed_swizzle`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.i8x16_relaxed_swizzle.html)
- [`core::arch::wasm32::i32x4_relaxed_trunc_f32x4`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.i32x4_relaxed_trunc_f32x4.html)
- [`core::arch::wasm32::u32x4_relaxed_trunc_f32x4`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.u32x4_relaxed_trunc_f32x4.html)
- [`core::arch::wasm32::i32x4_relaxed_trunc_f64x2_zero`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.i32x4_relaxed_trunc_f64x2_zero.html)
- [`core::arch::wasm32::u32x4_relaxed_trunc_f64x2_zero`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.u32x4_relaxed_trunc_f64x2_zero.html)
- [`core::arch::wasm32::f32x4_relaxed_madd`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.f32x4_relaxed_madd.html)
- [`core::arch::wasm32::f32x4_relaxed_nmadd`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.f32x4_relaxed_nmadd.html)
- [`core::arch::wasm32::f64x2_relaxed_madd`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.f64x2_relaxed_madd.html)
- [`core::arch::wasm32::f64x2_relaxed_nmadd`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.f64x2_relaxed_nmadd.html)
- [`core::arch::wasm32::i8x16_relaxed_laneselect`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.i8x16_relaxed_laneselect.html)
- [`core::arch::wasm32::u8x16_relaxed_laneselect`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.u8x16_relaxed_laneselect.html)
- [`core::arch::wasm32::i16x8_relaxed_laneselect`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.i16x8_relaxed_laneselect.html)
- [`core::arch::wasm32::u16x8_relaxed_laneselect`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.u16x8_relaxed_laneselect.html)
- [`core::arch::wasm32::i32x4_relaxed_laneselect`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.i32x4_relaxed_laneselect.html)
- [`core::arch::wasm32::u32x4_relaxed_laneselect`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.u32x4_relaxed_laneselect.html)
- [`core::arch::wasm32::i64x2_relaxed_laneselect`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.i64x2_relaxed_laneselect.html)
- [`core::arch::wasm32::u64x2_relaxed_laneselect`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.u64x2_relaxed_laneselect.html)
- [`core::arch::wasm32::f32x4_relaxed_min`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.f32x4_relaxed_min.html)
- [`core::arch::wasm32::f32x4_relaxed_max`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.f32x4_relaxed_max.html)
- [`core::arch::wasm32::f64x2_relaxed_min`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.f64x2_relaxed_min.html)
- [`core::arch::wasm32::f64x2_relaxed_max`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.f64x2_relaxed_max.html)
- [`core::arch::wasm32::i16x8_relaxed_q15mulr`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.i16x8_relaxed_q15mulr.html)
- [`core::arch::wasm32::u16x8_relaxed_q15mulr`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.u16x8_relaxed_q15mulr.html)
- [`core::arch::wasm32::i16x8_relaxed_dot_i8x16_i7x16`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.i16x8_relaxed_dot_i8x16_i7x16.html)
- [`core::arch::wasm32::u16x8_relaxed_dot_i8x16_i7x16`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.u16x8_relaxed_dot_i8x16_i7x16.html)
- [`core::arch::wasm32::i32x4_relaxed_dot_i8x16_i7x16_add`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.i32x4_relaxed_dot_i8x16_i7x16_add.html)
- [`core::arch::wasm32::u32x4_relaxed_dot_i8x16_i7x16_add`]
  (https://doc.rust-lang.org/nightly/core/arch/wasm32/fn.u32x4_relaxed_dot_i8x16_i7x16_add.html)

These APIs are now stable in const contexts:

- [`std::task::Waker::from_raw`]
  (https://doc.rust-lang.org/nightly/std/task/struct.Waker.html#method.from_raw)
- [`std::task::Waker::waker`]
  (https://doc.rust-lang.org/nightly/std/task/struct.Waker.html#method.from_raw)
- [`std::task::Context::from_waker`]
  (https://doc.rust-lang.org/nightly/std/task/struct.Context.html#method.from_waker)
- [`std::task::Context::waker`]
  (https://doc.rust-lang.org/nightly/std/task/struct.Context.html#method.waker)
- [`$integer::from_str_radix`]
  (https://doc.rust-lang.org/nightly/std/primitive.u32.html#method.from_str_radix)
- [`std::num::ParseIntError::kind`]
  (https://doc.rust-lang.org/nightly/std/num/struct.ParseIntError.html#method.kind)

Cargo
-----
- [feat: Add `info` cargo subcommand]
  (rust-lang/cargo#14141)

Compatibility Notes
-------------------
 - We now [disallow setting some built-in cfgs via the
   command-line](rust-lang/rust#126158) with
   the newly added
   [`explicit_builtin_cfgs_in_flags`]
   (https://doc.rust-lang.org/rustc/lints/listing/deny-by-default.html#explicit-builtin-cfgs-in-flags)
   lint in order to prevent incoherent state, eg. `windows` cfg active
   but target is Linux based. The appropriate [`rustc` flag]
   (https://doc.rust-lang.org/rustc/command-line-arguments.html)
   should be used instead.

- The standard library has a new implementation of `binary_search`
  which is significantly improves performance
  ([#128254](rust-lang/rust#128254)). However
  when a sorted slice has multiple values which compare equal, the
  new implementation may select a different value among the equal
  ones than the old implementation.

- [illumos/Solaris now sets `MSG_NOSIGNAL` when writing to
  sockets](rust-lang/rust#128259). This avoids
  killing the process with SIGPIPE when writing to a closed socket,
  which matches the existing behavior on other UNIX targets.

- [Removes a problematic hack that always passed the --whole-archive
  linker flag for tests, which may cause linker errors for code
  accidentally relying on it.]
  (rust-lang/rust#128400)

- The WebAssembly target features `multivalue` and `reference-types`
  are now both enabled by default. These two features both have
  subtle changes implied for generated WebAssembly binaries. For
  the `multivalue` feature, WebAssembly target support has changed
  when upgrading to LLVM 19. Support for generating functions with
  multiple returns no longer works and `-Ctarget-feature=+multivalue`
  has a different meaning than it did in LLVM 18 and prior. There
  is no longer any supported means to generate a module that has
  a function with multiple returns in WebAssembly from Rust source
  code. For the `reference-types` feature the encoding of immediates
  in the `call_indirect`, a commonly used instruction by the
  WebAssembly backend, has changed. Validators and parsers which
  don't understand the `reference-types` proposal will no longer
  accept modules produced by LLVM due to this change in encoding
  of immediates. Additionally these features being enabled are
  encoded in the `target_features` custom section and may affect
  downstream tooling such as `wasm-opt` consuming the module.
  Generating a WebAssembly module that disables default features
  requires `-Zbuild-std` support from Cargo and more information
  can be found at
  [rust-lang/rust#128511](rust-lang/rust#128511).
- [Rust now raises unsafety errors for union patterns in parameter-position]
  (rust-lang/rust#130531)

Internal Changes
----------------

These changes do not affect any public interfaces of Rust, but they
represent significant improvements to the performance or internals
of rustc and related tools.

- [Update to LLVM 19]
  (rust-lang/rust#127513)
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