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2025-03-05Rollup merge of #137569 - aDotInTheVoid:for-iurii, r=ibraheemdev许杰友 Jieyou Xu (Joe)-2/+1
Stabilize `string_extend_from_within` FCP'd here: https://github.com/rust-lang/rust/issues/103806#issuecomment-2674989531. Closes #103806.
2025-03-05Auto merge of #138031 - workingjubilee:rollup-5bsotpz, r=workingjubileebors-4/+1
Rollup of 15 pull requests Successful merges: - #137829 (Stabilize [T]::split_off... methods) - #137850 (Stabilize `box_uninit_write`) - #137912 (Do not recover missing lifetime with random in-scope lifetime) - #137913 (Allow struct field default values to reference struct's generics) - #137923 (Simplify `<Postorder as Iterator>::size_hint`) - #137949 (Update MSVC INSTALL.md instructions to recommend VS 2022 + recent Windows 10/11 SDK) - #137963 (Add ``dyn`` keyword to `E0373` examples) - #137975 (Remove unused `PpMode::needs_hir`) - #137981 (rustdoc search: increase strictness of typechecking) - #137986 (Fix some typos) - #137991 (Add `avr-none` to SUMMARY.md and platform-support.md) - #137993 (Remove obsolete comment from DeduceReadOnly) - #137996 (Revert "compiler/rustc_data_structures/src/sync/worker_local.rs: delete "unsafe impl Sync"") - #138019 (Pretty-print `#[deprecated]` attribute in HIR.) - #138026 (Make CrateItem::body() function return an option) r? `@ghost` `@rustbot` modify labels: rollup
2025-03-05Update `compiler-builtins` to 0.1.151Trevor Gross-1/+1
This enables `f16` builtins for loongarch [1] and adds support for Cygwin [2]. [1]: https://github.com/rust-lang/compiler-builtins/pull/770 [2]: https://github.com/rust-lang/compiler-builtins/pull/774
2025-03-04Rollup merge of #137850 - slanterns:box_uninit_write, r=ibraheemdevJubilee-4/+1
Stabilize `box_uninit_write` Closes: https://github.com/rust-lang/rust/issues/129397.
2025-03-04Rollup merge of #137634 - tgross35:update-builtins, r=tgross35Jubilee-1/+1
Update `compiler-builtins` to 0.1.149 Includes a change to make a subset of math symbols available on all platforms [1], and disables `f16` on aarch64 without neon [2]. [1]: https://github.com/rust-lang/compiler-builtins/pull/763 [2]: https://github.com/rust-lang/compiler-builtins/pull/775 try-job: aarch64-gnu try-job: aarch64-gnu-debug try-job: armhf-gnu try-job: dist-various-1 try-job: dist-various-2 try-job: dist-aarch64-linux try-job: dist-arm-linux try-job: dist-armv7-linux try-job: dist-x86_64-linux try-job: test-various
2025-03-02Rollup merge of #137641 - kpreid:dealloc, r=AmanieuMatthias Krüger-2/+8
More precisely document `Global::deallocate()`'s safety. There is a subtlety which "other conditions must be upheld by the caller" does not capture: `GlobalAlloc`/`alloc::dealloc()` require that the provided layout will be *equal*, not just that it "fits", the layout used to allocate. This is always true here due to how `allocate()`, `grow()`, and `shrink()` are implemented (they never return a larger allocation than requested), but that is a non-local property of the implementation, so it should be documented explicitly. r? libs `@rustbot` label A-allocators
2025-03-01Update `compiler-builtins` to 0.1.150Trevor Gross-1/+1
Includes a change to make a subset of math symbols available on all platforms [1], and disables `f16` on aarch64 without neon [2]. [1]: https://github.com/rust-lang/compiler-builtins/pull/763 [2]: https://github.com/rust-lang/compiler-builtins/pull/775
2025-03-01stabilize `box_uninit_write`Slanterns-4/+1
2025-02-25More precisely document `Global::deallocate()`'s safety.Kevin Reid-2/+8
There is a subtlety which "other conditions must be upheld by the caller" does not capture: `GlobalAlloc`/`alloc::dealloc()` require that the provided layout will be *equal*, not just that it "fits", the layout used to allocate. This is always true here due to how `allocate()`, `grow()`, and `shrink()` are implemented (they never return a larger allocation than requested), but that is a non-local property of the implementation, so it should be documented explicitly.
2025-02-25Auto merge of #137608 - fmease:rollup-h4siso6, r=fmeasebors-1/+1
Rollup of 8 pull requests Successful merges: - #137370 (adjust_abi: make fallback logic for ABIs a bit easier to read) - #137444 (Improve behavior of `IF_LET_RESCOPE` around temporaries and place expressions) - #137464 (Fix invalid suggestion from type error for derive macro) - #137539 ( Add rustdoc-gui regression test for #137082 ) - #137576 (Don't doc-comment BTreeMap<K, SetValZST, A>) - #137595 (remove `simd_fpow` and `simd_fpowi`) - #137600 (type_ir: remove redundant part of comment) - #137602 (feature: fix typo in attribute description) r? `@ghost` `@rustbot` modify labels: rollup
2025-02-25Rollup merge of #137515 - tgross35:update-builtins, r=tgross35León Orell Valerian Liehr-1/+1
Update `compiler-builtins` to 0.1.148 Includes `f16` symbols on MIPS [1], updates for `libm` [2], and reapplies the patch that drops the `public_test_deps!` macro [3]. [1]: https://github.com/rust-lang/compiler-builtins/pull/762 [2]: https://github.com/rust-lang/compiler-builtins/pull/765 [3]: https://github.com/rust-lang/compiler-builtins/pull/766 try-job: aarch64-gnu try-job: i686-mingw-1 try-job: i686-mingw-2 try-job: test-various try-job: x86_64-msvc-1 try-job: x86_64-msvc-2 try-job: x86_64-rust-for-linux
2025-02-25Rollup merge of #137576 - goffrie:setvalzst, r=lcnrLeón Orell Valerian Liehr-1/+1
Don't doc-comment BTreeMap<K, SetValZST, A> This otherwise shows up in documentation as an empty impl block (worse, at the *top* of the docs above the public impls).
2025-02-25Auto merge of #137571 - tgross35:rollup-i1tcnv1, r=tgross35bors-26/+28
Rollup of 8 pull requests Successful merges: - #134655 (Stabilize `hash_extract_if`) - #135933 (Explain how Vec::with_capacity is faithful) - #136668 (Stabilize `core::str::from_utf8_mut` as `const`) - #136775 (Update `String::from_raw_parts` safety requirements) - #137109 (stabilize extract_if) - #137349 (Implement `read_buf` for zkVM stdin) - #137493 (configure.py: don't instruct user to run nonexistent program) - #137516 (remove some unnecessary rustc_const_unstable) r? `@ghost` `@rustbot` modify labels: rollup
2025-02-24Don't doc-comment BTreeMap<K, SetValZST, A>Geoffry Song-1/+1
2025-02-24Rollup merge of #137109 - bend-n:knife, r=oli-obkTrevor Gross-15/+9
stabilize extract_if Tracking issue: #43244 Closes: #43244 FCP completed: https://github.com/rust-lang/rust/issues/43244#issuecomment-2523595704
2025-02-24Rollup merge of #136775 - robertbastian:patch-2, r=AmanieuTrevor Gross-5/+2
Update `String::from_raw_parts` safety requirements These have become out of sync with `Vec::from_raw_part`'s safety requirements, and are likely to diverge again. I think it's safest to just point at `Vec`'s requirements. https://github.com/rust-lang/rust/issues/119206#issuecomment-2180116680
2025-02-24Rollup merge of #136668 - WaffleLapkin:from_utf8_mut, r=AmanieuTrevor Gross-1/+0
Stabilize `core::str::from_utf8_mut` as `const` cc #91006 (tracking issue) r? libs-api
2025-02-24Rollup merge of #135933 - hkBst:patch-19, r=workingjubileeTrevor Gross-5/+17
Explain how Vec::with_capacity is faithful This is a revival of https://github.com/rust-lang/rust/pull/99790 building on the prose of `@workingjubilee` and edits of `@jmaargh.` Closes https://github.com/rust-lang/rust/issues/99385.
2025-02-24Stablize `string_extend_from_within`Alona Enraght-Moony-2/+1
2025-02-24Update string.rsRobert Bastian-2/+2
Co-authored-by: Amanieu d'Antras <amanieu@gmail.com>
2025-02-24Update `compiler-builtins` to 0.1.148Trevor Gross-1/+1
Includes `f16` symbols on MIPS [1], updates for `libm` [2], and reapplies the patch that drops the `public_test_deps!` macro [3]. [1]: https://github.com/rust-lang/compiler-builtins/pull/762 [2]: https://github.com/rust-lang/compiler-builtins/pull/765 [3]: https://github.com/rust-lang/compiler-builtins/pull/766
2025-02-24remove uses of rustc_intrinsic_must_be_overridden from standard libraryRalf Jung-4/+1
2025-02-23Rollup merge of #137483 - bend-n:😅, r=NoratriebTrevor Gross-5/+5
rename sub_ptr to offset_from_unsigned i also made `byte_sub_ptr` `byte_offset_from_unsigned` fixes #137121 tracking issue #95892
2025-02-23Rollup merge of #137297 - tgross35:update-builtins, r=tgross35Trevor Gross-1/+1
Update `compiler-builtins` to 0.1.147 Removes an ABI hack that used `<2 x i64>` to return `i128` in `xmm0` on Windows [1]. [1]: https://github.com/rust-lang/compiler-builtins/pull/759 Link: https://github.com/rust-lang/rust/issues/116558 Link: https://github.com/rust-lang/compiler-builtins/issues/758 try-job: x86_64-mingw-1 try-job: x86_64-mingw-2
2025-02-23rename sub_ptr 😅bendn-5/+5
2025-02-23Stabilize `core::str::from_utf8_mut`Waffle Lapkin-1/+0
2025-02-23stabilize extract_ifbendn-15/+9
2025-02-23Auto merge of #137237 - cuviper:stage0, r=Mark-Simulacrumbors-12/+2
Master bootstrap update https://forge.rust-lang.org/release/process.html#master-bootstrap-update-tuesday r? `@Mark-Simulacrum`
2025-02-23Update `compiler-builtins` to 0.1.147Trevor Gross-1/+1
Removes an ABI hack that used `<2 x i64>` to return `i128` in `xmm0` on Windows [1]. [1]: https://github.com/rust-lang/compiler-builtins/pull/759 Link: https://github.com/rust-lang/rust/issues/116558 Link: https://github.com/rust-lang/compiler-builtins/issues/758
2025-02-23Rollup merge of #137121 - bend-n:master, r=NoratriebMatthias Krüger-1/+0
stabilize `(const_)ptr_sub_ptr` Tracking issue: #95892 Closes #95892 FCP Completed: https://github.com/rust-lang/rust/issues/95892#issuecomment-2561139730 r? ````@Noratrieb````
2025-02-23Rollup merge of #135501 - tgross35:stdlib-dependencies-private, r=bjorn3Matthias Krüger-1/+3
Inject `compiler_builtins` during postprocessing and ensure it is made private Follow up of https://github.com/rust-lang/rust/pull/135278 Do the following: * Inject `compiler_builtins` during postprocessing, rather than injecting `extern crate compiler_builtins as _` into the AST * Do not make dependencies of `std` private by default (this was added in #135278) * Make sure sysroot crates correctly mark their dependencies private/public * Ensure that marking a dependency private makes its dependents private by default as well, unless otherwise specified * Do the `compiler_builtins` update that has been blocked on this There is more detail in the commit messages. This includes the changes I was working on in https://github.com/rust-lang/rust/pull/136226. try-job: test-various try-job: x86_64-msvc-1 try-job: x86_64-msvc-2 try-job: i686-mingw-1 try-job: i686-mingw-2
2025-02-22Somehow these stability attributes were able to be omitted before?ltdk-0/+2
2025-02-22Stabilise c_str_moduleltdk-1/+1
2025-02-21Use `public-dependencies` in all sysroot cratesTrevor Gross-1/+3
In [1], most dependencies of `std` and other sysroot crates were marked private, but this did not happen for `alloc` and `test`. Update these here, marking public standard library crates as the only non-private dependencies. [1]: https://github.com/rust-lang/rust/pull/111076
2025-02-21Rollup merge of #136089 - jwong101:box-default-debug-stack-usage, r=AmanieuMatthias Krüger-1/+14
Reduce `Box::default` stack copies in debug mode The `Box::new(T::default())` implementation of `Box::default` only had two stack copies in debug mode, compared to the current version, which has four. By avoiding creating any `MaybeUninit<T>`'s and just writing `T` directly to the `Box` pointer, the stack usage in debug mode remains the same as the old version. Another option would be to mark `Box::write` as `#[inline(always)]`, and change it's implementation to to avoid calling `MaybeUninit::write` (which creates a `MaybeUninit<T>` on the stack) and to use `ptr::write` instead. Fixes: #136043
2025-02-21Explain how Vec::with_capacity is faithfulMarijn Schouten-5/+17
Co-authored-by: Jubilee <workingjubilee@gmail.com> and jmaargh
2025-02-20Implement 'PartialEq<{&Self, CString, Cow<Self>}>' for 'CStr'; Implement ↵Gabriel Bjørnager Jensen-0/+109
'PartialEq<{CStr, &CStr, Cow<CStr>}>' for 'CString'; Implement 'PartialEq<{CStr, &CStr, CString}>' for 'Cow<CStr>';
2025-02-19Rollup merge of #132268 - elichai:string_try_from_vec, r=AmanieuMatthias Krüger-0/+18
Impl TryFrom<Vec<u8>> for String I think this is useful enough to have :) As a general question, is there any policy around adding "missing" trait implementations? (like adding `AsRef<T> for T` for std types), I mostly stumble upon them when using a lot of "impl Trait in argument position" like (`foo: impl Into<String>`)
2025-02-19Rollup merge of #120580 - HTGAzureX1212:HTGAzureX1212/issue-45795, r=m-ou-seMatthias Krüger-5/+10
Add `MAX_LEN_UTF8` and `MAX_LEN_UTF16` Constants This pull request adds the `MAX_LEN_UTF8` and `MAX_LEN_UTF16` constants as per #45795, gated behind the `char_max_len` feature. The constants are currently applied in the `alloc`, `core` and `std` libraries.
2025-02-18update `cfg(bootstrap)`Josh Stone-10/+0
2025-02-18update version placeholdersJosh Stone-2/+2
(cherry picked from commit e4840ce59bdddb19394df008c5c26d9c493725f8)
2025-02-17Rollup merge of #137105 - zachs18:cow-derefpure-restrict, r=NadrierilMatthias Krüger-1/+11
Restrict DerefPure for Cow<T> impl to T = impl Clone, [impl Clone], str. Fixes #136046 `feature(deref_patterns)` tracking issue: https://github.com/rust-lang/rust/issues/87121 `Cow<'_, T>` should only implement `DerefPure` if its `Deref` impl is pure, which requires `<T::Owned as Borrow<T>>::borrow` to be pure. This PR restricts `impl DerefPure for Cow<'_, T>` to `T: Sized + Clone`, `T = [U: Clone]`, and `T = str` (for all of whom `<T::Owned as Borrow<T>>::borrow` is implemented in the stdlib and is pure). cc ``@Nadrieril`` ------ An alternate approach would be to introduce a new `unsafe trait BorrowPure<T>` analogous to `DerefPure` that could be implemented for `T: Sized`, `&T`, `&mut T`, `String`, `Vec`, `Box`, `PathBuf`, `OsString`, etc. https://github.com/rust-lang/rust/compare/master...zachs18:borrow-pure-trait
2025-02-17stabilize (const_)ptr_sub_ptrbendn-1/+0
2025-02-16add MAX_LEN_UTF8 and MAX_LEN_UTF16 constantsHTGAzureX1212-5/+10
2025-02-15Restrict DerefPure for Cow<T> impl to T = impl Clone, [impl Clone], str.Zachary S-1/+11
2025-02-15docs: fix broken intra-doc links that never workedMichael Howell-4/+0
2025-02-15Rollup merge of #136749 - mzeitlin11:extend-asciichar, r=scottmcmJacob Pratt-0/+26
Implement Extend<AsciiChar> for String Implement `Extend<AsciiChar>` for `String` as suggested in https://github.com/rust-lang/rust/issues/110998#issuecomment-2590122968. Also implements `Extend<&AsciiChar>` since there's an analogous impl for `Extend<&char>`, but happy to remove if not thought useful. r? `@scottmcm` since you requested it, but no pressure to review!
2025-02-14Rollup merge of #136983 - ehuss:misc-2024-prep, r=tgross35Jubilee-40/+40
Prepare standard library for Rust 2024 migration This includes a variety of commits preparing the standard library for migration to Rust 2024. The actual migration is blocked on a few things, so I wanted to get this out of the way in a relatively digestable PR.
2025-02-14Rollup merge of #136976 - jedbrown:jed/doc-boxed-deferred-init, r=tgross35Matthias Krüger-84/+44
alloc boxed: docs: use MaybeUninit::write instead of as_mut_ptr In the deferred initialization pattern, the docs were needlessly going through `as_mut_ptr().write()` to initialize, which is unnecessary use of a pointer, needs to be inside an `unsafe` block, and may weaken alias analysis.
2025-02-13alloc: Apply missing_unsafe_on_externEric Huss-1/+1