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Rollup of 6 pull requests
Successful merges:
- #124741 (patchable-function-entry: Add unstable compiler flag and attribute)
- #126470 (make cargo submodule optional)
- #126956 (core: avoid `extern type`s in formatting infrastructure)
- #126970 (Simplify `str::clone_into`)
- #127022 (Support fetching `Attribute` of items.)
- #127058 (Tighten `fn_decl_span` for async blocks)
r? `@ghost`
`@rustbot` modify labels: rollup
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Tighten `fn_decl_span` for async blocks
Tightens the span of `async {}` blocks in diagnostics, and subsequently async closures and async fns, by actually setting the `fn_decl_span` correctly. This is kinda a follow-up on #125078, but it fixes the problem in a more general way.
I think the diagnostics are significantly improved, since we no longer have a bunch of overlapping spans. I'll point out one caveat where I think the diagnostic may get a bit more confusing, but where I don't think it matters.
r? ````@estebank```` or ````@oli-obk```` or someone else on wg-diag or compiler i dont really care lol
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Support fetching `Attribute` of items.
Fixes [https://github.com/rust-lang/project-stable-mir/issues/83](https://github.com/rust-lang/project-stable-mir/issues/83)
`rustc_ast::ast::Attribute` doesn't impl `Hash` and `Eq`. Thus it cannot be directly used as key of `IndexMap` in `rustc_smir::rustc_smir::Tables` and we cannot define stable `Attribute` as index to `rustc_ast::ast::Attribute` like `Span` and many other stable definitions.
Since an string (or tokens) and its span contain all info about an attribute, I defined a simple `Attribute` struct on stable side.
I choose to fetch attributes via `tcx::get_attrs_by_path()` due to `get_attrs()` is marked as deprecated and `get_attrs_by_name()` cannot handle name of multiple segments like `rustfmt::skip`.
r? `@celinval`
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Simplify `str::clone_into`
Removes an `unsafe` in favor of just using `String` methods.
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core: avoid `extern type`s in formatting infrastructure
```@RalfJung``` [said](https://rust-lang.zulipchat.com/#narrow/stream/219381-t-libs/topic/Use.20of.20.60extern.20type.60.20in.20formatting.20machinery/near/446552837):
>How attached are y'all to using `extern type` in the formatting machinery?
Seems like this was introduced a [long time ago](https://github.com/rust-lang/rust/commit/34ef8f5441d5335c4177abd622383ed34a6e9315). However, it's also [not really compatible with Stacked Borrows](https://github.com/rust-lang/unsafe-code-guidelines/issues/256), and only works currently because we effectively treat references-to-extern-type almost like raw pointers in Stacked Borrows -- which of course is unsound, it's not how LLVM works. I was planning to make Miri emit a warning when this happens to avoid cases like [this](https://github.com/rust-lang/rust/issues/126814#issuecomment-2183816373) where people use extern type specifically to silence Miri without realizing what happens. but with the formatting machinery using extern type, this warning would just show up everywhere...
>
> The "proper" way to do this in Stacked Borrows is to use raw pointers (or `NonNull`).
This PR does just that.
r? ```@RalfJung```
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make cargo submodule optional
Right now, we fetch the cargo submodule no matter what, even if the command we are running doesn't need it (e.g., `x build compiler library`). This PR changes that to only fetch the cargo submodule when it's necessary.
For more context, see the zulip thread: https://rust-lang.zulipchat.com/#narrow/stream/326414-t-infra.2Fbootstrap/topic/Why.20is.20cargo.20always.20checked.20out.3F
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r=estebank,workingjubilee
patchable-function-entry: Add unstable compiler flag and attribute
Tracking issue: #123115
Add the -Z patchable-function-entry compiler flag and the #[patchable_function_entry(prefix_nops = m, entry_nops = n)] attribute.
Rebased and adjusted the canditate implementation to match changes in the RFC.
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Update browser-ui-test version to `0.18.0`
Should help with #126436.
r? `@notriddle`
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Clippy subtree update
r? `@Manishearth`
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clippy-subtree-update
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Rustup
r? `@ghost`
changelog: none
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bump strip-ansi-escapes
This bumps `strip-ansi-escapes` to remove arrayvec from it's deps (https://github.com/luser/strip-ansi-escapes/pull/8)
Should Cargo.lock be commited too to track it's working state?
changelog: none
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r=Kobzol
Migrate `run-make/invalid-library` to `rmake.rs`
Part of #121876.
r? `@jieyouxu`
try-job: x86_64-msvc
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ast: Standardize visiting order
Order: ID, attributes, inner nodes in source order if possible, tokens, span.
Also always use exhaustive matching in visiting infra, and visit some discovered missing nodes.
Unlike https://github.com/rust-lang/rust/pull/125741 this shouldn't affect anything serious like `macro_rules` scopes.
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Currently bootstrap doesn't use any inner paths from rust-analyzer and
bootstrap with `ShouldRun::create_or_deps`.
Signed-off-by: onur-ozkan <work@onurozkan.dev>
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r=blyxyas
Fix doc_markdown DevOps false positive
This fixes an issue where the word "DevOps" ends up as a false positive for the `doc_markdown` lint.
In a doc comment like this
```rust
/// Call the Azure DevOps REST API.
pub fn example() {}
```
the word "DevOps" is highlighted as something which should be in backticks.
```
warning: item in documentation is missing backticks
--> src/lib.rs:1:20
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1 | /// Call the Azure DevOps REST API.
| ^^^^^^
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= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#doc_markdown
= note: requested on the command line with `-W clippy::doc-markdown`
help: try
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1 | /// Call the Azure `DevOps` REST API.
| ~~~~~~~~
warning: `example` (lib) generated 1 warning (run `cargo clippy --fix --lib -p example` to apply 1 suggestion)
Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.00s
```
This could be overriden with the `doc-valid-idents` configuration parameter as noted by the [documentation](https://rust-lang.github.io/rust-clippy/master/index.html#/doc_markdown), but I believe the word "DevOps" is sufficiently common to belong alongside exceptions like "GitHub" and "GitLab".
changelog: [`doc_markdown`]: Fix DevOps false positive.
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Co-authored-by: Ralf Jung <post@ralfj.de>
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rustdoc: use current stage if download-rustc enabled
When using download-rustc, using stage 1 rustdoc results in the wrong librustc_driver being used.
```sh
$ ./build/host/stage1/bin/rustdoc --version
./build/host/stage1/bin/rustdoc: error while loading shared libraries: librustc_driver-7ff02ed05016d515.so: cannot open shared object file: No such file or directory
```
This change fixes that by not cutting the stage if download-rustc is enabled.
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Rollup of 6 pull requests
Successful merges:
- #126571 (Less `maybe_whole_expr`, take 2)
- #126721 (coverage: Make `#[coverage(..)]` apply recursively to nested functions)
- #126928 (Some `Nonterminal` removal precursors)
- #126929 (Remove `__rust_force_expr`.)
- #126980 (set self.is_known_utf8 to false in extend_from_slice)
- #126983 (Remove `f16` and `f128` ICE paths from smir)
r? `@ghost`
`@rustbot` modify labels: rollup
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Remove `f16` and `f128` ICE paths from smir
Just chasing down some possible ICE paths. ```@compiler-errors``` mentioned in https://github.com/rust-lang/rust/pull/121728#discussion_r1506133496 that it is okay not to support these in smir, but this change seems pretty trivial?
r? ```@celinval``` since you reviewed https://github.com/rust-lang/rust/pull/114607#pullrequestreview-1771673591
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set self.is_known_utf8 to false in extend_from_slice
try-job: x86_64-msvc
closes #126977
Related to #126885, #126333, and [this conversation](<https://github.com/rust-lang/rust/commit/aa46a3368eb017eba41bfab956c7787d46c09935#r143539097>)
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Remove `__rust_force_expr`.
This was added (with a different name) to improve an error message. It is no longer needed -- removing it changes the error message, but overall I think the new message is no worse:
- the mention of `#` in the first line is a little worse,
- but the extra context makes it very clear what the problem is, perhaps even clearer than the old message,
- and the removal of the note about the `expr` fragment (an internal detail of `__rust_force_expr`) is an improvement.
Overall I think the error is quite clear and still far better than the old message that prompted #61933, which didn't even mention patterns.
The motivation for this is #124141, which will cause pasted metavariables to be tokenized and reparsed instead of the AST node being cached. This change in behaviour occasionally has a non-zero perf cost, and `__rust_force_expr` causes the tokenize/reparse step to occur twice. Removing `__rust_force_expr` greatly reduces the extra overhead for the `deep-vector` benchmark.
r? ```@oli-obk```
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Some `Nonterminal` removal precursors
Small things to prepare for #124141, more or less.
r? ```@oli-obk```
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coverage: Make `#[coverage(..)]` apply recursively to nested functions
This PR makes the (currently-unstable) `#[coverage(off)]` and `#[coverage(on)]` attributes apply recursively to all nested functions/closures, instead of just the function they are directly attached to.
Those attributes can now also be applied to modules and to impl/impl-trait blocks, where they have no direct effect, but will be inherited by all enclosed functions/closures/methods that don't override the inherited value.
---
Fixes #126625.
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Less `maybe_whole_expr`, take 2
I first tried this in #107550. I now think it's worth doing again, as a precursor to #124141.
r? ```@petrochenkov```
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Fixes for 32-bit SPARC on Linux
This PR fixes a number of issues which previously prevented `rustc` from being built
successfully for 32-bit SPARC using the `sparc-unknown-linux-gnu` triplet.
In particular, it adds linking against `libatomic` where necessary, uses portable `AtomicU64`
for `rustc_data_structures` and rewrites the spec for `sparc_unknown_linux_gnu` to use
`TargetOptions` and replaces the previously used `-mv8plus` with the more portable
`-mcpu=v9 -m32`.
To make `rustc` build successfully, support for 32-bit SPARC needs to be added to the `object`
crate as well as the `nix` crate which I will be sending out later as well.
r? nagisa
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patch `rust-lld` and `ld.lld` on NixOS
When `rustc` uses its self-contained lld, we also need to patch `rust-lld` and `ld.lld`.
The `rpath` for `rust-lld` is `$ORIGIN/../../../:$ORIGIN/../lib`, so I use `--add-rpath` instead of `--set-rpath`, which should be easier to maintain.
I also changed `src/bootstrap/src/core/download.rs`, even this doesn't fix any known issues.
For the `lld-wrapper.sh` of lld, refer to: https://github.com/rust-lang/rustc-dev-guide/pull/1999.
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Use `clang-format` in `tidy` to check the C++ code style under `llvm-wrapper`
Fixes #123510.
Based on the discussion at https://rust-lang.zulipchat.com/#narrow/stream/233931-t-compiler.2Fmajor-changes/topic/Enable.20.60clang-format.60.20for.20.60rustc.60.20compiler-team.23756/near/443562800, we can use clang-format from pip to achieve the code formatting.
r? `@Kobzol`
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Let's `#[expect]` some lints: Stabilize `lint_reasons` (RFC 2383)
Let's give this another try! The [previous stabilization attempt](https://github.com/rust-lang/rust/pull/99063) was stalled by some unresolved questions. These have been discussed in a [lang team](https://github.com/rust-lang/lang-team/issues/191) meeting. The last open question, regarding the semantics of the `#[expect]` attribute was decided on in https://github.com/rust-lang/rust/issues/115980
I've just updated the [stabilization report](https://github.com/rust-lang/rust/issues/54503#issuecomment-1179563964) with the discussed questions and decisions. Luckily, the decision is inline with the current implementation.
This hopefully covers everything. Let's hope that the CI will be green like the spring.
fixes #115980
fixes #54503
---
r? `@wesleywiser`
Tacking Issue: https://github.com/rust-lang/rust/issues/54503
Stabilization Report: https://github.com/rust-lang/rust/issues/54503#issuecomment-1179563964
Documentation Update: https://github.com/rust-lang/reference/pull/1237
<!--
For Clippy:
changelog: [`allow_attributes`]: Is now available on stable, since the `lint_reasons` feature was stabilized
changelog: [`allow_attributes_without_reason`]: Is now available on stable, since the `lint_reasons` feature was stabilized
-->
---
Roses are red,
Violets are blue,
Let's expect lints,
With reason clues
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Let's `#[expect]` some lints: Stabilize `lint_reasons` (RFC 2383)
Let's give this another try! The [previous stabilization attempt](https://github.com/rust-lang/rust/pull/99063) was stalled by some unresolved questions. These have been discussed in a [lang team](https://github.com/rust-lang/lang-team/issues/191) meeting. The last open question, regarding the semantics of the `#[expect]` attribute was decided on in https://github.com/rust-lang/rust/issues/115980
I've just updated the [stabilization report](https://github.com/rust-lang/rust/issues/54503#issuecomment-1179563964) with the discussed questions and decisions. Luckily, the decision is inline with the current implementation.
This hopefully covers everything. Let's hope that the CI will be green like the spring.
fixes #115980
fixes #54503
---
r? `@wesleywiser`
Tacking Issue: https://github.com/rust-lang/rust/issues/54503
Stabilization Report: https://github.com/rust-lang/rust/issues/54503#issuecomment-1179563964
Documentation Update: https://github.com/rust-lang/reference/pull/1237
<!--
For Clippy:
changelog: [`allow_attributes`]: Is now available on stable, since the `lint_reasons` feature was stabilized
changelog: [`allow_attributes_without_reason`]: Is now available on stable, since the `lint_reasons` feature was stabilized
-->
---
Roses are red,
Violets are blue,
Let's expect lints,
With reason clues
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https://github.com/rust-lang/rust/pull/120924/files#r1653512240
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Id, attributes, inner nodes in source order if possible, tokens, span.
Also always use exhaustive matching in visiting infra, and visit some missing nodes.
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Remove more `PtrToPtr` casts in GVN
This addresses two things I noticed in MIR:
1. `NonNull::<T>::eq` does `(a as *mut T) == (b as *mut T)`, but it could just compare the `*const T`s, so this removes `PtrToPtr` casts that are on both sides of a pointer comparison, so long as they're not fat-to-thin casts.
2. `NonNull::<T>::addr` does `transmute::<_, usize>(p as *const ())`, but so long as `T: Thin` that cast doesn't do anything, and thus we can directly transmute the `*const T` instead.
r? mir-opt
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