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stabilize const_fn_floating_point_arithmetic #128596
stabilize const_fn_floating_point_arithmetic #128596
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r? @nnethercote rustbot has assigned @nnethercote. Use |
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Some changes occurred in src/tools/clippy cc @rust-lang/clippy |
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I removed this test since it seems fully covered by the min_const_fn tests.
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. |
Looks good, r=me once the FCP is satisfied. |
Before this is merged, can we please have a reference documentation PR posted and reviewed? |
☔ The latest upstream changes (presumably #122792) made this pull request unmergeable. Please resolve the merge conflicts. |
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🔔 This is now entering its final comment period, as per the review above. 🔔 |
…iaskrgr Rollup of 9 pull requests Successful merges: - rust-lang#128596 (stabilize const_fn_floating_point_arithmetic) - rust-lang#129199 (make writes_through_immutable_pointer a hard error) - rust-lang#129246 (Retroactively feature gate `ConstArgKind::Path`) - rust-lang#129290 (Pin `cc` to 1.0.105) - rust-lang#129323 (Implement `ptr::fn_addr_eq`) - rust-lang#129500 (remove invalid `TyCompat` relation for effects) - rust-lang#129501 (panicking: improve hint for Miri's RUST_BACKTRACE behavior) - rust-lang#129505 (interpret: ImmTy: tighten sanity checks in offset logic) - rust-lang#129510 (Fix `elided_named_lifetimes` in code) r? `@ghost` `@rustbot` modify labels: rollup
…iaskrgr Rollup of 9 pull requests Successful merges: - rust-lang#128596 (stabilize const_fn_floating_point_arithmetic) - rust-lang#129199 (make writes_through_immutable_pointer a hard error) - rust-lang#129246 (Retroactively feature gate `ConstArgKind::Path`) - rust-lang#129290 (Pin `cc` to 1.0.105) - rust-lang#129323 (Implement `ptr::fn_addr_eq`) - rust-lang#129500 (remove invalid `TyCompat` relation for effects) - rust-lang#129501 (panicking: improve hint for Miri's RUST_BACKTRACE behavior) - rust-lang#129505 (interpret: ImmTy: tighten sanity checks in offset logic) - rust-lang#129510 (Fix `elided_named_lifetimes` in code) r? `@ghost` `@rustbot` modify labels: rollup
…iaskrgr Rollup of 9 pull requests Successful merges: - rust-lang#128596 (stabilize const_fn_floating_point_arithmetic) - rust-lang#129199 (make writes_through_immutable_pointer a hard error) - rust-lang#129246 (Retroactively feature gate `ConstArgKind::Path`) - rust-lang#129290 (Pin `cc` to 1.0.105) - rust-lang#129323 (Implement `ptr::fn_addr_eq`) - rust-lang#129500 (remove invalid `TyCompat` relation for effects) - rust-lang#129501 (panicking: improve hint for Miri's RUST_BACKTRACE behavior) - rust-lang#129505 (interpret: ImmTy: tighten sanity checks in offset logic) - rust-lang#129510 (Fix `elided_named_lifetimes` in code) r? `@ghost` `@rustbot` modify labels: rollup
Rollup merge of rust-lang#128596 - RalfJung:const_fn_floating_point_arithmetic, r=nnethercote stabilize const_fn_floating_point_arithmetic Part of rust-lang#128288 Fixes rust-lang#57241 The existing test `tests/ui/consts/const_let_eq_float.rs` ([link](https://github.com/RalfJung/rust/blob/const_fn_floating_point_arithmetic/tests/ui/consts/const_let_eq_float.rs)) covers the basics, and also Miri has extensive tests covering the interpreter's float machinery. Also, that machinery can already be used on stable inside `const`/`static` initializers, just not inside `const fn`. This was explicitly called out in rust-lang/rfcs#3514 so in a sense t-lang just recently already FCP'd this, but let's hear from them whether they want another FCP for the stabilization here or whether that was covered by the FCP for the RFC. Cc ``@rust-lang/lang`` ### Open items - [x] Update the Reference: rust-lang/reference#1566
…er-errors add back test for stable-const-can-only-call-stable-const This got accidentally removed in rust-lang#128596 (file `tests/ui/internal/internal-unstable-const.rs`). The test has little to do with "allow internal unstable" though, so add it in a file that already tests various const stability things. Also tweak the help that suggests to add `rustc_allow_const_fn_unstable` to make it clear that this needs team approval, since it is a fairly big gun.
…er-errors add back test for stable-const-can-only-call-stable-const This got accidentally removed in rust-lang#128596 (file `tests/ui/internal/internal-unstable-const.rs`). The test has little to do with "allow internal unstable" though, so add it in a file that already tests various const stability things. Also tweak the help that suggests to add `rustc_allow_const_fn_unstable` to make it clear that this needs team approval, since it is a fairly big gun.
Rollup merge of rust-lang#129553 - RalfJung:const-stability, r=compiler-errors add back test for stable-const-can-only-call-stable-const This got accidentally removed in rust-lang#128596 (file `tests/ui/internal/internal-unstable-const.rs`). The test has little to do with "allow internal unstable" though, so add it in a file that already tests various const stability things. Also tweak the help that suggests to add `rustc_allow_const_fn_unstable` to make it clear that this needs team approval, since it is a fairly big gun.
…dtolnay stabilize const_float_bits_conv This stabilizes `const_float_bits_conv`, and thus fixes rust-lang#72447. With rust-lang#128596 having landed, this is entirely a libs-only question now. ```rust impl f32 { pub const fn to_bits(self) -> u32; pub const fn from_bits(v: u32) -> Self; pub const fn to_be_bytes(self) -> [u8; 4]; pub const fn to_le_bytes(self) -> [u8; 4] pub const fn to_ne_bytes(self) -> [u8; 4]; pub const fn from_be_bytes(bytes: [u8; 4]) -> Self; pub const fn from_le_bytes(bytes: [u8; 4]) -> Self; pub const fn from_ne_bytes(bytes: [u8; 4]) -> Self; } impl f64 { pub const fn to_bits(self) -> u64; pub const fn from_bits(v: u64) -> Self; pub const fn to_be_bytes(self) -> [u8; 8]; pub const fn to_le_bytes(self) -> [u8; 8] pub const fn to_ne_bytes(self) -> [u8; 8]; pub const fn from_be_bytes(bytes: [u8; 8]) -> Self; pub const fn from_le_bytes(bytes: [u8; 8]) -> Self; pub const fn from_ne_bytes(bytes: [u8; 8]) -> Self; } ```` Cc `@rust-lang/wg-const-eval` `@rust-lang/libs-api`
Rollup merge of rust-lang#129555 - RalfJung:const_float_bits_conv, r=dtolnay stabilize const_float_bits_conv This stabilizes `const_float_bits_conv`, and thus fixes rust-lang#72447. With rust-lang#128596 having landed, this is entirely a libs-only question now. ```rust impl f32 { pub const fn to_bits(self) -> u32; pub const fn from_bits(v: u32) -> Self; pub const fn to_be_bytes(self) -> [u8; 4]; pub const fn to_le_bytes(self) -> [u8; 4] pub const fn to_ne_bytes(self) -> [u8; 4]; pub const fn from_be_bytes(bytes: [u8; 4]) -> Self; pub const fn from_le_bytes(bytes: [u8; 4]) -> Self; pub const fn from_ne_bytes(bytes: [u8; 4]) -> Self; } impl f64 { pub const fn to_bits(self) -> u64; pub const fn from_bits(v: u64) -> Self; pub const fn to_be_bytes(self) -> [u8; 8]; pub const fn to_le_bytes(self) -> [u8; 8] pub const fn to_ne_bytes(self) -> [u8; 8]; pub const fn from_be_bytes(bytes: [u8; 8]) -> Self; pub const fn from_le_bytes(bytes: [u8; 8]) -> Self; pub const fn from_ne_bytes(bytes: [u8; 8]) -> Self; } ```` Cc `@rust-lang/wg-const-eval` `@rust-lang/libs-api`
stabilize const_float_bits_conv This stabilizes `const_float_bits_conv`, and thus fixes rust-lang/rust#72447. With rust-lang/rust#128596 having landed, this is entirely a libs-only question now. ```rust impl f32 { pub const fn to_bits(self) -> u32; pub const fn from_bits(v: u32) -> Self; pub const fn to_be_bytes(self) -> [u8; 4]; pub const fn to_le_bytes(self) -> [u8; 4] pub const fn to_ne_bytes(self) -> [u8; 4]; pub const fn from_be_bytes(bytes: [u8; 4]) -> Self; pub const fn from_le_bytes(bytes: [u8; 4]) -> Self; pub const fn from_ne_bytes(bytes: [u8; 4]) -> Self; } impl f64 { pub const fn to_bits(self) -> u64; pub const fn from_bits(v: u64) -> Self; pub const fn to_be_bytes(self) -> [u8; 8]; pub const fn to_le_bytes(self) -> [u8; 8] pub const fn to_ne_bytes(self) -> [u8; 8]; pub const fn from_be_bytes(bytes: [u8; 8]) -> Self; pub const fn from_le_bytes(bytes: [u8; 8]) -> Self; pub const fn from_ne_bytes(bytes: [u8; 8]) -> Self; } ```` Cc `@rust-lang/wg-const-eval` `@rust-lang/libs-api`
stabilize const_float_bits_conv This stabilizes `const_float_bits_conv`, and thus fixes rust-lang/rust#72447. With rust-lang/rust#128596 having landed, this is entirely a libs-only question now. ```rust impl f32 { pub const fn to_bits(self) -> u32; pub const fn from_bits(v: u32) -> Self; pub const fn to_be_bytes(self) -> [u8; 4]; pub const fn to_le_bytes(self) -> [u8; 4] pub const fn to_ne_bytes(self) -> [u8; 4]; pub const fn from_be_bytes(bytes: [u8; 4]) -> Self; pub const fn from_le_bytes(bytes: [u8; 4]) -> Self; pub const fn from_ne_bytes(bytes: [u8; 4]) -> Self; } impl f64 { pub const fn to_bits(self) -> u64; pub const fn from_bits(v: u64) -> Self; pub const fn to_be_bytes(self) -> [u8; 8]; pub const fn to_le_bytes(self) -> [u8; 8] pub const fn to_ne_bytes(self) -> [u8; 8]; pub const fn from_be_bytes(bytes: [u8; 8]) -> Self; pub const fn from_le_bytes(bytes: [u8; 8]) -> Self; pub const fn from_ne_bytes(bytes: [u8; 8]) -> Self; } ```` Cc `@rust-lang/wg-const-eval` `@rust-lang/libs-api`
stabilize const_float_bits_conv This stabilizes `const_float_bits_conv`, and thus fixes rust-lang/rust#72447. With rust-lang/rust#128596 having landed, this is entirely a libs-only question now. ```rust impl f32 { pub const fn to_bits(self) -> u32; pub const fn from_bits(v: u32) -> Self; pub const fn to_be_bytes(self) -> [u8; 4]; pub const fn to_le_bytes(self) -> [u8; 4] pub const fn to_ne_bytes(self) -> [u8; 4]; pub const fn from_be_bytes(bytes: [u8; 4]) -> Self; pub const fn from_le_bytes(bytes: [u8; 4]) -> Self; pub const fn from_ne_bytes(bytes: [u8; 4]) -> Self; } impl f64 { pub const fn to_bits(self) -> u64; pub const fn from_bits(v: u64) -> Self; pub const fn to_be_bytes(self) -> [u8; 8]; pub const fn to_le_bytes(self) -> [u8; 8] pub const fn to_ne_bytes(self) -> [u8; 8]; pub const fn from_be_bytes(bytes: [u8; 8]) -> Self; pub const fn from_le_bytes(bytes: [u8; 8]) -> Self; pub const fn from_ne_bytes(bytes: [u8; 8]) -> Self; } ```` Cc `@rust-lang/wg-const-eval` `@rust-lang/libs-api`
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 ([#​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> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever MR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this MR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this MR, check this box --- This MR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy40NDAuNyIsInVwZGF0ZWRJblZlciI6IjM3LjQ0MC43IiwidGFyZ2V0QnJhbmNoIjoibWFpbiIsImxhYmVscyI6WyJSZW5vdmF0ZSBCb3QiXX0=-->
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)
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. * Dial down the verbosity of the build by dropping -v argument to x.py. 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)
Part of #128288
Fixes #57241
The existing test
tests/ui/consts/const_let_eq_float.rs
(link) covers the basics, and also Miri has extensive tests covering the interpreter's float machinery. Also, that machinery can already be used on stable insideconst
/static
initializers, just not insideconst fn
.This was explicitly called out in rust-lang/rfcs#3514 so in a sense t-lang just recently already FCP'd this, but let's hear from them whether they want another FCP for the stabilization here or whether that was covered by the FCP for the RFC.
Cc @rust-lang/lang
Open items