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not hold
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Shallowly bail from `coerce_unsized` more
We do a *lot* of coercion in HIR typeck. Most of the time we're just coercing a type to itself, but we always try `coerce_unsized` even if it's not necessary.
Let's avoid doing that by adding a fast path to `coerce_unsized`; see the comment in that function.
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Collapse Analysis|Borrowck|PostBorrowckAnalysis when there are no opaques
r? lcnr
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Miri subtree update
r? `@ghost`
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Rollup of 4 pull requests
Successful merges:
- rust-lang/rust#142078 (Add SIMD funnel shift and round-to-even intrinsics)
- rust-lang/rust#142214 (`tests/ui`: A New Order [9/N])
- rust-lang/rust#142417 (`tests/ui`: A New Order [12/N])
- rust-lang/rust#143030 (Fix suggestion spans inside macros for the `unused_must_use` lint)
r? `@ghost`
`@rustbot` modify labels: rollup
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Fix suggestion spans inside macros for the `unused_must_use` lint
This PR fixes the suggestion spans inside macros for the `unused_must_use` lint by trying to find the oldest ancestor span.
Fixes https://github.com/rust-lang/rust/issues/143025
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`tests/ui`: A New Order [12/N]
Some `tests/ui/` housekeeping, to trim down number of tests directly under `tests/ui/`. Part of rust-lang/rust#133895.
r? `@jieyouxu`
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`tests/ui`: A New Order [9/N]
Some `tests/ui/` housekeeping, to trim down number of tests directly under `tests/ui/`. Part of rust-lang/rust#133895.
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Add SIMD funnel shift and round-to-even intrinsics
This PR adds 3 new SIMD intrinsics
- `simd_funnel_shl` - funnel shift left
- `simd_funnel_shr` - funnel shift right
- `simd_round_ties_even` (vector version of `round_ties_even_fN`)
TODO (future PR): implement `simd_fsh{l,r}` in miri, cg_gcc and cg_clif (it is surprisingly hard to implement without branches, the common tricks that rotate uses doesn't work because we have 2 elements now. e.g, the `-n&31` trick used by cg_gcc to implement rotate doesn't work with this because then `fshl(a, b, 0)` will be `a | b`)
[#t-compiler > More SIMD intrinsics](https://rust-lang.zulipchat.com/#narrow/channel/131828-t-compiler/topic/More.20SIMD.20intrinsics/with/522130286)
`@rustbot` label T-compiler T-libs A-intrinsics F-core_intrinsics
r? `@workingjubilee`
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Rollup of 11 pull requests
Successful merges:
- rust-lang/rust#142021 (Doc: clarify priority of lint level sources)
- rust-lang/rust#142367 (Add regression test for rust-lang/rust#137857 to ensure that we generate intra doc links for extern crate items.)
- rust-lang/rust#142641 (Generate symbols.o for proc-macros too)
- rust-lang/rust#142889 (Clarify doc comment on unix OpenOptions)
- rust-lang/rust#143063 (explain `ImportData::imported_module`)
- rust-lang/rust#143088 (Improve documentation of `TagEncoding`)
- rust-lang/rust#143135 (fix typos on some doc comments)
- rust-lang/rust#143138 (Port `#[link_name]` to the new attribute parsing infrastructure)
- rust-lang/rust#143155 (`librustdoc` house-keeping 🧹)
- rust-lang/rust#143169 (Remove unused feature gates)
- rust-lang/rust#143171 (Fix the span of trait bound modifier `[const]`)
r? `@ghost`
`@rustbot` modify labels: rollup
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Fix the span of trait bound modifier `[const]`
r? project-const-traits or anyone
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Remove unused feature gates
After finding some unused feature gates in rust-lang/rust#143155 , I wrote a small script to see if I can find any others.
And I did. Not a lot, but still a small win 😁
Contains a few instances of `iter_from_coroutine` that can be removed due to rust-lang/rust#142801 (I guess).
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`librustdoc` house-keeping 🧹
This PR mostly removes a bunch of crate-level attributes that were added at some point, but then later on became unnecessary:
- some `#[feature]` gates
- some `#[allow]`s
- a `#[recursion_limit]`
Then I went ahead and sprinkled some tidy sorting on the remaining attrs, and `Cargo.toml`.
Trying to give my anal retentiveness some peace of mind 😅
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Port `#[link_name]` to the new attribute parsing infrastructure
Ports `link_name` to the new attribute parsing infrastructure for https://github.com/rust-lang/rust/issues/131229#issuecomment-2971353197
r? `@jdonszelmann`
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fix typos on some doc comments
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Improve documentation of `TagEncoding`
This PR is follow-up from the [discussion here](https://rust-lang.zulipchat.com/#narrow/channel/182449-t-compiler.2Fhelp/topic/.E2.9C.94.20VariantId.3DDiscriminant.20when.20tag.20is.20niche.20encoded.3F/with/524384295).
It aims at making the `TagEncoding` documentation less ambiguous and more detailed with references to relevant implementation sides. It especially clears up the ambiguous use of discriminant/variant index, which sparked the discussion referenced above.
PS: While working with layout data, I somehow ended up looking at the docs for `FakeBorrowKind` and noticed that the one example was not in a doc comment. I hope that this is minor enough of a fix for it to be okay in this otherwise unrelated PR.
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explain `ImportData::imported_module`
r? `@petrochenkov`
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Clarify doc comment on unix OpenOptions
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Generate symbols.o for proc-macros too
To ensure used statics are functioning correctly for proc-macros too.
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r=lolbinarycat
Add regression test for #137857 to ensure that we generate intra doc links for extern crate items.
Fixes https://github.com/rust-lang/rust/issues/137857.
I checked that linking to extern crates was generating valid links (with the `/index.html` part) and since it's already working, just adding a regression test.
r? `@notriddle`
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Doc: clarify priority of lint level sources
This updates the rustc book to clearly document how conflicting lint configurations are resolved across different sources, including command-line flags, crate-level attributes, in-line attributes, and `--cap-lints`.
It also explains the special behavior of `forbid` and `force_warn`.
Fixes rust-lang/rust#124088
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r=GuillaumeGomez
GCC backend subtree update
cc `@antoyo`
r? ghost
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Update cargo
7 commits in 409fed7dc1553d49cb9a8c0637d12d65571346ce..930b4f62cfcd1f0eabdb30a56d91bf6844b739bf
2025-06-23 15:55:04 +0000 to 2025-06-28 14:58:43 +0000
- Use a different lint for the `fix_only_once_for_duplicates` test (rust-lang/cargo#15713)
- chore: bump to 0.91.0; update changelog (rust-lang/cargo#15710)
- Add `http.proxy-cainfo` config for proxy certs (rust-lang/cargo#15374)
- chore(deps): update msrv (3 versions) to v1.86 (rust-lang/cargo#15709)
- chore(deps): update msrv (1 version) to v1.88 (rust-lang/cargo#15706)
- Rework `cargo-test-support` & `testsuite` to use `CARGO_BIN_EXE_*` for Cargo (rust-lang/cargo#15692)
- fix: Expand error messages around path dependency on `cargo package` and `cargo publish` (rust-lang/cargo#15705)
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Rollup of 9 pull requests
Successful merges:
- rust-lang/rust#123476 (std::net: adding `unix_socket_exclbind` feature for solaris/illumos.)
- rust-lang/rust#142708 (Do not include NUL-terminator in computed length)
- rust-lang/rust#142963 (Skip unnecessary components in x64 try builds)
- rust-lang/rust#142987 (rustdoc: show attributes on enum variants)
- rust-lang/rust#143031 (Add windows-gnullvm hosts to the manifest)
- rust-lang/rust#143082 (update internal `send_signal` comment)
- rust-lang/rust#143110 (Use tidy to sort `sym::*` items)
- rust-lang/rust#143111 (BTreeSet: remove duplicated code by reusing `from_sorted_iter`)
- rust-lang/rust#143114 (Minor Documentation Improvements)
r? `@ghost`
`@rustbot` modify labels: rollup
try-job: dist-i586-gnu-i586-i686-musl
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subtree-update_cg_gcc_2025-06-28
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Minor Documentation Improvements
---
## Description
- Fixed typos and improved clarity in comments and documentation.
---
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BTreeSet: remove duplicated code by reusing `from_sorted_iter`
The method `BTreeSet::from_sorted_iter` was introduced in 49ccb7519f55bd117d2ab50b7a030637f380aec6, but it was not consistently used throughout the codebase. As a result, some code redundantly reimplemented its logic. This commit fixes the problem.
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Use tidy to sort `sym::*` items
Use tidy to sort the symbols in the invocation of `symbols!`, instead of implementing the ordering check inside the proc macro.
(asked `````@nnethercote````` about this on zulip, he didn't have any reservations about making this change)
This has a couple of benefits:
- tidy's "version sort" (thanks to rust-lang/rust#141311 !) is nicer than the naive-cmp sort, so, e.g. `AtomicI{8, 16, 32, 64, 128}` are properly sorted by bit width.
- consistency with the rest of the repo
- allows us to remove a bit of order-verifying code from the `symbols!` proc macro impl
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update internal `send_signal` comment
the vxwork did not have the old comment updated in rust-lang/rust#141990 so update here;
signaling -> sending signals to because the latter reads better to me.
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Add windows-gnullvm hosts to the manifest
I made a mistake testing https://github.com/rust-lang/rust/pull/140772 only with `rustup-toolchain-install-master` which doesn't care about the manifests.
This means windows-gnullvm self-hosting will have to wait one more release, unless this change is backported to beta and a new beta release is made, which doesn't seem worth the trouble.
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r=GuillaumeGomez
rustdoc: show attributes on enum variants
mostly for #[non_exhaustive]
unsure if there's any attributes we should take care to *not* include, it could use `render_code_attribute` and `is_non_exhaustive` instead, if that is a concern.
fixes rust-lang/rust#142599
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Skip unnecessary components in x64 try builds
We unnecessarily rebuild `wasm-component-ld`, `llvm-bitcode-linker` and Cranelift during the intermediate PGO builds several times times, which is unnecessarily and increases the duration of try builds. This PR also disables some unnecessary dist components.
r? `````@jieyouxu`````
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