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2025-07-15Merge pull request #20243 from lnicola/sync-from-rustLaurențiu Nicola-27736/+44294
minor: Sync from downstream
2025-07-15Auto merge of #143877 - xizheyin:143813, r=scottmcm,saethlinbors-3/+73
`std::vec`: Add UB check for `set_len`, `from_raw_parts_in`, and etc. Closes rust-lang/rust#143813 I noticed that `from_parts_in` do the similar things like `from_raw_parts_in`, so I add the UB check in the last commit. If it is not appropriate, I will remove it. And I fix a typo in the first commit. r? `@scottmcm`
2025-07-15Format and bump rustc cratesLaurențiu Nicola-32/+30
2025-07-15Merge pull request #4469 from Patrick-6/add-spinloop-hintsRalf Jung-15/+31
Add std::hint::spin_loop() to tests
2025-07-15Merge from rust-lang/rustLaurențiu Nicola-27708/+44268
2025-07-15Preparing for merge from rust-lang/rustLaurențiu Nicola-1/+1
2025-07-15docs: update documentation of core::mem::copy to include const on the fn ↵SunkenPotato-1/+1
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2025-07-15Fix handling of SCRIPT_ARG in docker imagesNikita Popov-41/+32
Instead of making this a build parameter, pass the SCRIPT as an environment variable. To this purpose, normalize on always referring to a script in `/scripts`. For i686-gnu-nopt-2 I had to create a separate script, because Docker seems to be really terrible at command line argument parsing, so it's not possible to pass an environment variable that contains whitespace.
2025-07-15Use `Ty::is_fn` instead of manually matching on `TyKind` (#15089)Alex Macleod-57/+43
just makes the code a bit more concise changelog: none
2025-07-15Make spin function naming more consistentPatrick-6-17/+17
2025-07-15Further decrease number of `cargo metadata` invokesShoyu Vanilla-243/+270
2025-07-15chore: Cleanup cargo config queriesShoyu Vanilla-133/+151
2025-07-15Fix CItiif-7/+2
2025-07-15Add teststiif-0/+583
2025-07-15Implement other logicstiif-9/+132
2025-07-15Lint against having both #[unstable_feature_bound] and #[stable] on the same ↵tiif-0/+45
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2025-07-15Make stability attribute not to error when unstable feature bound is in effecttiif-2/+76
2025-07-15Add the core logic in old and new solverstiif-2/+96
2025-07-15Lower the UnstableFeatureBound predicate to UnstableFeature predicatetiif-0/+14
2025-07-15Setup unstable feature bound attributetiif-0/+123
2025-07-15fix: `match_single_binding` wrongly handles scopeyanglsh-37/+429
2025-07-15make `std_detect` public dependency of `std`David Mládek-1/+1
2025-07-15Implement resolver warnings about reexporting private dependenciesDavid Mládek-14/+90
2025-07-15`redundant_clone`: split iterator checks into `redundant_iter_cloned` lintJason Newcomb-17/+44
2025-07-15rustc_resolve: rename `check_hidden_glob_reexports` to `lint_reexports`David Mládek-7/+2
2025-07-15Merge pull request #4452 from Stypox/trace-borrow-trackerRalf Jung-1/+62
Add tracing spans to borrow tracker functions
2025-07-15Add InterpCx::fn_abi_of_instance/_fn_ptr with tracing, shadowing FnAbiOfStypox-19/+41
2025-07-15gh-pages: reduce page size by skipping spaces (#15278)Samuel Tardieu-1/+1
This removes preserved spaces after lint name, marginally reducing page size. Changing `~}}` into `-}}` will break things: lint name will touch copy buttons on it's right side. cc @GuillaumeGomez as one who touched this last time changelog: none
2025-07-15gh-pages: reduce page size by skipping spacesklensy-1/+1
2025-07-15Correct which exploit mitigations are enabled by defaultBastian Kersting-11/+11
2025-07-15Auto merge of #143958 - samueltardieu:rollup-lh1s143, r=samueltardieubors-1277/+747
Rollup of 13 pull requests Successful merges: - rust-lang/rust#142301 (tests: Fix duplicated-path-in-error fail with musl) - rust-lang/rust#143630 (Drop `./x suggest`) - rust-lang/rust#143736 (Give all bytes of TypeId provenance) - rust-lang/rust#143752 (Don't panic if WASI_SDK_PATH not set when detecting compiler) - rust-lang/rust#143837 (Adjust `run_make_support::symbols` helpers) - rust-lang/rust#143878 (Port `#[pointee]` to the new attribute parsing infrastructure) - rust-lang/rust#143905 (Recover and suggest to use `;` to construct array type) - rust-lang/rust#143907 (core: make `str::split_at_unchecked()` inline) - rust-lang/rust#143910 (Add experimental `backtrace-trace-only` std feature) - rust-lang/rust#143927 (Preserve constness in trait objects up to hir ty lowering) - rust-lang/rust#143935 (rustc_type_ir/walk: move docstring to `TypeWalker` itself) - rust-lang/rust#143938 (Update books) - rust-lang/rust#143941 (update `cfg_select!` documentation) Failed merges: - rust-lang/rust#143926 (Remove deprecated fields in bootstrap) r? `@ghost` `@rustbot` modify labels: rollup
2025-07-15Add tracing calls to borrow tracker under the same nameStypox-0/+18
... but the function name is specified in the arguments, see https://github.com/rust-lang/miri/pull/4452#discussion_r2204958019
2025-07-15Add enter_trace_span! that checks #[cfg("tracing")]Stypox-1/+44
Includes a custom syntax shortand to enter_trace_span! with NAME::SUBNAME. MaybeEnteredTraceSpan is `pub use`d in lib.rs to make it available also in bin/, just in case.
2025-07-15Merge pull request #20238 from rust-lang/gat-infer-lifetimesShoyu Vanilla (Flint)-2/+30
fix: Infer lifetimes for GATs in expression/pattern position
2025-07-15Rollup merge of #143941 - folkertdev:cfg-select-docs, r=traviscrossSamuel Tardieu-30/+39
update `cfg_select!` documentation tracking issue: https://github.com/rust-lang/rust/issues/115585 After rust-lang/rust#143461, and with an eye on a soon(ish) stabilization, I think the docs need some work. The existing text read more like a motivation for the feature existing to me, so I've tried to now be a bit more descriptive. Still, suggestions are very welcome. I also added a test for an empty `select! {}` because it's just the sort of thing that might break. r? ``@traviscross``
2025-07-15Rollup merge of #143938 - rustbot:docs-update, r=ehussSamuel Tardieu-0/+0
Update books ## rust-lang/book 3 commits in ef1ce8f87a8b18feb1b6a9cf9a4939a79bde6795..b2d1a0821e12a676b496d61891b8e3d374a8e832 2025-07-08 17:24:41 UTC to 2025-07-02 21:30:57 UTC - Chapter 16 from tech review (rust-lang/book#4438) - WIP ch 17 edits after tech review (rust-lang/book#4319) - Chapter 15 from tech review (rust-lang/book#4433) ## rust-embedded/book 1 commits in 41f688a598a5022b749e23d37f3c524f6a0b28e1..fe88fbb68391a465680dd91109f0a151a1676f3e 2025-07-08 18:54:25 UTC to 2025-07-08 18:54:25 UTC - Clarify usage of #[interrupt] attribute and recommend device crate re… (rust-embedded/book#386) ## rust-lang/nomicon 3 commits in 8b61acfaea822e9ac926190bc8f15791c33336e8..3ff384320598bbe8d8cfe5cb8f18f78a3a3e6b15 2025-07-05 07:34:22 UTC to 2025-07-05 07:13:51 UTC - Add build script part to FFI chapter for more clear and smooth learn … (rust-lang/nomicon#440) - Cleanups for tree example of splitting borrows (rust-lang/nomicon#443) - Handle drop zst (rust-lang/nomicon#425) ## rust-lang/reference 17 commits in e9fc99f107840813916f62e16b3f6d9556e1f2d8..1f45bd41fa6c17b7c048ed6bfe5f168c4311206a 2025-07-11 23:15:51 UTC to 2025-07-01 16:49:33 UTC - mention an important use for the naked attribute (rust-lang/reference#1929) - Array expression repeat operands can be const blocks. (rust-lang/reference#1928) - Document (tuple) struct pattern namespace behavior (rust-lang/reference#1925) - Replace set of en dashes with set of em dashes (rust-lang/reference#1926) - Update `should_panic` to use the attribute template (rust-lang/reference#1882) - const-eval.const-expr.borrows: mention indirect places (rust-lang/reference#1865) - associated-items.md: remove redundant word (rust-lang/reference#1874) - introduction.md: replace hard-to-read example (rust-lang/reference#1873) - typo (rust-lang/reference#1924) - Update `ignore` to use the attribute template (rust-lang/reference#1881) - Update `test` to use the attribute template (rust-lang/reference#1880) - Update `cfg_attr` to use the attribute template (rust-lang/reference#1879) - Update `cfg` to use the attribute template (rust-lang/reference#1878) - allow constants to refer to mutable/external memory, but reject such constants as patterns (rust-lang/reference#1859) - Remove outdated comment about non-copy unions (rust-lang/reference#1872) - Add a template for documenting attributes (rust-lang/reference#1877) - Switch enum grammar to use "variant" (rust-lang/reference#1876) ## rust-lang/rust-by-example 1 commits in 288b4e4948add43f387cad35adc7b1c54ca6fe12..e386be5f44af711854207c11fdd61bb576270b04 2025-07-04 23:17:15 UTC to 2025-07-04 23:17:15 UTC - Update Chinese translations (rust-lang/rust-by-example#1943)
2025-07-15Rollup merge of #143935 - ada4a:walk-docstring, r=compiler-errorsSamuel Tardieu-6/+6
rustc_type_ir/walk: move docstring to `TypeWalker` itself having it on the impl block is a bit weird imo
2025-07-15Rollup merge of #143927 - oli-obk:const-dyn-trait-hir-ty, r=fmeaseSamuel Tardieu-3/+27
Preserve constness in trait objects up to hir ty lowering r? ``@compiler-errors`` While we don't support `dyn const Trait`, we can at least also inform the user that `const Trait` is only legal for `#[const_trait] trait Trait {}`
2025-07-15Rollup merge of #143910 - ChrisDenton:no-symbolization, r=tgross35Samuel Tardieu-47/+57
Add experimental `backtrace-trace-only` std feature This experimentally allows building std with backtrace but without symbolisation. It does not affect stable and requires build-std to use. This doesn't change the backtrace crate itself so relies on the optimizer to remove the unused parts. Example usage: ```toml # .cargo/config.toml [unstable] build-std = ["core", "alloc", "panic_unwind", "std"] build-std-features = ["backtrace", "backtrace-trace-only", "panic-unwind"] ``` ```toml # Cargo.toml [profile.release] opt-level = 3 lto = "thin" codegen-units = 1 ``` Ideally we should split the backtrace feature into `backtrace-trace` and `backtrace-symbolize` (with the latter dependent on the former) because Cargo features tend to work better when they're positive rather than negative. But I'm keen for this experiment not to break existing users. cc ``@joshtriplett``
2025-07-15Rollup merge of #143907 - Kijewski:pr-inline-split_at_unchecked, ↵Samuel Tardieu-0/+1
r=Mark-Simulacrum core: make `str::split_at_unchecked()` inline This PR adds `#[inline]` to the method `str::split_at_unchecked()`. This is done for two reasons: 1. The method is tiny, e.g. on AMD-64 (<https://godbolt.org/z/ba68fdfxn>): ```asm movq %rdi, %rax subq %rcx, %rdx movq %rsi, (%rdi) addq %rcx, %rsi movq %rcx, 8(%rdi) movq %rsi, 16(%rdi) movq %rdx, 24(%rdi) retq ``` 2. More importantly, inlining the method enables further automatic optimizations. E.g. if you split at index 3, then in the compiler (rustc, llvm or both) knows that this code cannot fail, and the panicking path is omitted in the generated code: ```rust pub fn punctuation(i: &str) -> Result<(), ()> { const THREE_CHARS: &[[u8; 3]] = &[*b"<<=", *b">>=", *b"...", *b"..="]; if let Some((head, _)) = i.split_at_checked(3) && THREE_CHARS.contains(&head.as_bytes().try_into().unwrap()) { Ok(()) } else { Err(()) } } ``` <details> <summary>Without PR</summary> <https://play.rust-lang.org/?version=stable&mode=release&edition=2024&gist=0234de8158f467eebd73286f20d6e27a> ```asm playground::punctuation: subq $40, %rsp movq %rsi, %rdx movq %rdi, %rsi movb $1, %al cmpq $3, %rdx ja .LBB2_2 je .LBB2_3 .LBB2_11: addq $40, %rsp retq .LBB2_2: cmpb $-64, 3(%rsi) jl .LBB2_11 .LBB2_3: leaq 8(%rsp), %rdi movl $3, %ecx callq *core::str::<impl str>::split_at_unchecked@GOTPCREL(%rip) movq 8(%rsp), %rcx movb $1, %al testq %rcx, %rcx je .LBB2_11 cmpq $3, 16(%rsp) jne .LBB2_12 movzwl (%rcx), %edx movzbl 2(%rcx), %ecx shll $16, %ecx orl %edx, %ecx cmpl $4013115, %ecx jg .LBB2_8 cmpl $3026478, %ecx je .LBB2_10 cmpl $4009518, %ecx je .LBB2_10 jmp .LBB2_11 .LBB2_8: cmpl $4013630, %ecx je .LBB2_10 cmpl $4013116, %ecx jne .LBB2_11 .LBB2_10: xorl %eax, %eax addq $40, %rsp retq .LBB2_12: leaq .Lanon.d98a7fbb86d10a97c24516e267466134.2(%rip), %rdi leaq .Lanon.d98a7fbb86d10a97c24516e267466134.1(%rip), %rcx leaq .Lanon.d98a7fbb86d10a97c24516e267466134.6(%rip), %r8 leaq 7(%rsp), %rdx movl $43, %esi callq *core::result::unwrap_failed@GOTPCREL(%rip) ``` </details> <details> <summary>With PR</summary> <https://play.rust-lang.org/?version=stable&mode=release&edition=2024&gist=5d4058c79ce0f6cb1a434190427d2055> ```asm playground::punctuation: movb $1, %al cmpq $3, %rsi ja .LBB0_2 je .LBB0_3 .LBB0_9: retq .LBB0_2: cmpb $-64, 3(%rdi) jl .LBB0_9 .LBB0_3: movzwl (%rdi), %eax movzbl 2(%rdi), %ecx shll $16, %ecx orl %eax, %ecx movb $1, %al cmpl $4013115, %ecx jg .LBB0_6 cmpl $3026478, %ecx je .LBB0_8 cmpl $4009518, %ecx je .LBB0_8 jmp .LBB0_9 .LBB0_6: cmpl $4013630, %ecx je .LBB0_8 cmpl $4013116, %ecx jne .LBB0_9 .LBB0_8: xorl %eax, %eax retq ``` </details>
2025-07-15Rollup merge of #143905 - xizheyin:143828, r=compiler-errorsSamuel Tardieu-48/+218
Recover and suggest to use `;` to construct array type Fixes rust-lang/rust#143828 r? compiler
2025-07-15Rollup merge of #143878 - JonathanBrouwer:pointee_parser, r=jdonszelmannSamuel Tardieu-3/+16
Port `#[pointee]` to the new attribute parsing infrastructure Ports `#[pointee]` to the new attribute parsing infrastructure for https://github.com/rust-lang/rust/issues/131229#issuecomment-2971351163 r? ``@jdonszelmann``
2025-07-15Rollup merge of #143837 - jieyouxu:symbol-apis, r=ChrisDentonSamuel Tardieu-29/+268
Adjust `run_make_support::symbols` helpers Massage the `symbols` helpers to fill out {match all, match any} x {substring match, exact match}: | | Substring match | Exact match | |-----------|----------------------------------------|-------------------------------| | Match any | `object_contains_any_symbol_substring` | `object_contains_any_symbol` | | Match all | `object_contains_all_symbol_substring` | `object_contains_all_symbols` | As I'd like to use `object_contains_all_symbols` for rust-lang/rust#143669. As part of this: - Rename `any_symbol_contains` to `object_contains_any_symbol_substring` for accuracy, as `any_symbol_contains` is actually "contains any matching substring". - Remove `with_symbol_iter`. Noticed while working on https://github.com/rust-lang/rust/pull/143669. r? ``@ChrisDenton`` (or compiler)
2025-07-15Rollup merge of #143752 - pmur:murp/no-panic-detect-wasi-cc, r=KobzolSamuel Tardieu-4/+9
Don't panic if WASI_SDK_PATH not set when detecting compiler The fedora packaging builds the wasm sysroot outside of the rust build system. Fedora applies a couple of patches related to wasm which I think make this possible. Not panicking seems consistent with the detection logic of other targets when they cannot find cc.
2025-07-15Rollup merge of #143736 - oli-obk:uninspectable-type-id, r=RalfJungSamuel Tardieu-34/+79
Give all bytes of TypeId provenance This makes all bytes of TypeId uninspectable at compile-time. For context see https://github.com/rust-lang/rust/issues/77125#issuecomment-3057049217 r? ``@RalfJung``
2025-07-15Rollup merge of #143630 - jieyouxu:drop-suggest, r=Mark-SimulacrumSamuel Tardieu-1073/+17
Drop `./x suggest` This PR removes the current `./x suggest` implementation (rust-lang/rust#109933, rust-lang/rust#106249) and associated docs for several reasons: 1. Primarily, `./x suggest` is another "flow" in bootstrap that incurs extra complexity and more invariants that bootstrap has to maintain. This causes more friction when trying to investigate and fix staging problems. As far as I know, this flow has not been actively maintained in quite a while, and I'm not aware of interest in maintaining it. Bootstrap really could use less implementation complexity with a very limited maintenance bandwidth. 2. The current `./x suggest` implementation "bypasses" the usual stage defaults for the various check/build/test/etc. flows, and it's not really possible to have a stage default because `./x suggest --run` produces a *sequence* of suggestions like [`./x check`, `./x test library/std`, ..] and then tries to run all of them in sequence, based on which files are modified. 3. We've not seen a lot of interest both in using it or extending static/dynamic test suggestions. Last extensions were rust-lang/rust#117961 and rust-lang/rust#120763. I'm not convinced the extra implementation complexity is worth it. This was discussed in: - [#t-infra/bootstrap > Dropping the current &#96;./x suggest&#96; flow implementation](https://rust-lang.zulipchat.com/#narrow/channel/326414-t-infra.2Fbootstrap/topic/Dropping.20the.20current.20.60.2E.2Fx.20suggest.60.20flow.20implementation/with/527456699) - [#t-compiler > Dropping current &#96;./x suggest&#96; implementation](https://rust-lang.zulipchat.com/#narrow/channel/131828-t-compiler/topic/Dropping.20current.20.60.2E.2Fx.20suggest.60.20implementation/with/527528696) Closes rust-lang/rust#109933 (the current implementation is being removed). Closes rust-lang/rust#143569 (by removing `./x suggest` altogether).
2025-07-15Rollup merge of #142301 - Gelbpunkt:duplicated-path-in-error-musl, ↵Samuel Tardieu-0/+10
r=workingjubilee,fmease,jieyouxu tests: Fix duplicated-path-in-error fail with musl musl's dlopen returns a different error than glibc, which contains the name of the file. This would cause the test to fail, since the filename would appear twice in the output (once in the error from rustc, once in the error message from musl). Split the expected test outputs for the different libc implementations. Fixes rust-lang/rust#128474
2025-07-15tidy: check for invalid file namesSamuel Tardieu-0/+43
2025-07-15Merge pull request #2504 from lolbinarycat/lolbinarycat-patch-2许杰友 Jieyou Xu (Joe)-1/+1
2025-07-15tidy: improve commentMarijn Schouten-1/+1
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