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Fix a couple Emscripten tests
This fixes a couple Emscripten tests where the correct fix is more or less obvious. A couple UI tests are still broken with this PR:
- `tests/ui/abi/numbers-arithmetic/return-float.rs` (#136197)
- `tests/ui/no_std/no-std-unwind-binary.rs` (haven't debugged yet)
- `tests/ui/test-attrs/test-passed.rs` (haven't debugged this either)
`````@rustbot````` label +T-compiler +O-emscripten
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Allow transmuting generic pattern types to and from their base
Pattern types always have the same size as their base type, so we can just ignore the pattern and look at the base type for figuring out whether transmuting is possible.
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Match Ergonomics 2024: update edition 2024 behavior of feature gates
This updates the edition 2024 behavior of the feature gates `ref_pat_eat_one_layer_2024_structural` and `ref_pat_eat_one_layer_2024` to correspond to the left and right typing rules compared [here](https://nadrieril.github.io/typing-rust-patterns/?compare=true&opts2=AQEBAAABAQABAgIAAQEBAAEBAAABAAA%3D&opts1=AQEBAgEBAQEBAgIAAAAAAAAAAAAAAAA%3D&mode=rules&do_cmp=true&ty_d=3&style=SequentBindingMode), respectively. I'll implement the proposed new behavior for editions ≤ 2021 in another PR.
The tests are split up a bit awkwardly for practical reasons, but I've added new tests from 3 places:
- I got tests for where the typing rules differ from the "Compare" tab of the page linked above. These had to be split up based on where the errors are emitted and how rustfixable they are, so they've ended up in different files to keep tidy. Within each file, though, the order of the tests matches the order the typing differences appear in that comparison (as of when this was written).
- I used [this other comparison](https://nadrieril.github.io/typing-rust-patterns/?q=%5B%26mut+%26%28mut+x%29%5D%3A+%26mut+%5B%26CT%5D&compare=true&opts2=AQEBAgABAQEBAgIAAQEBAAEBAAABAAA%3D&opts1=AQEBAgEBAQEBAgIAAAAAAAAAAAAAAAA%3D&mode=compare&do_cmp=true&ty_d=3&style=SequentBindingMode) to test the `Deref(EatInner, FallbackToOuter)` rule of the left/"structural"/eat-inner ruleset. These are all in `well-typed-edition-2024.rs`.
- I added some select tests for cases where the new typing rules differ from current stable Rust. I had to be pickier about what I included here, but I tried to make sure each typing rule got some coverage. That said, my approach for these tests was a bit ad-hoc, so I may have missed something.
Relevant tracking issue: #123076
r? ````@ghost````
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[rustdoc] Add sans-serif font setting
Fixes https://github.com/rust-lang/rust/issues/52449.
This PR adds a new setting introducing the possibility to switch to a sans-serif font (`Fira Sans`) for the text.
Can be tested [here](https://rustdoc.crud.net/imperio/sans-serif/std/index.html).
cc ```@rust-lang/rustdoc-frontend```
r? ```@notriddle```
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optimize slice::ptr_rotate for small rotates
r? `@scottmcm`
This swaps the positions and numberings of algorithms 1 and 2 in `slice::ptr_rotate`, and pulls the entire outer loop into algorithm 3 since it was redundant for the first two. Effectively, `ptr_rotate` now always does the `memcpy`+`memmove`+`memcpy` sequence if the shifts fit into the stack buffer.
With this change, an `IndexMap`-style `move_index` function is optimized correctly.
Assembly comparisons:
- `move_index`, before: https://godbolt.org/z/Kr616KnYM
- `move_index`, after: https://godbolt.org/z/1aoov6j8h
- the code from `#89714`, before: https://godbolt.org/z/Y4zaPxEG6
- the code from `#89714`, after: https://godbolt.org/z/1dPx83axc
related to #89714
some relevant discussion in https://internals.rust-lang.org/t/idea-shift-move-to-efficiently-move-elements-in-a-vec/22184
Behavior tests pass locally. I can't get any consistent microbenchmark results on my machine, but the assembly diffs look promising.
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tests: Port `translation` to rmake.rs
Part of #121876.
This PR partially supersedes #129011 and is co-authored with `@Oneirical.`
## Summary
This PR ports `tests/run-make/translation` to rmake.rs. Notable changes from the Makefile version include:
- We now actually fail if the rustc invocations fail... The Makefile did not have `SHELL=/bin/bash -o pipefail`, so all the piped rustc invocations to grep vacuously succeeded, even if the broken ftl test case actually regressed over time and ICEs on current master.
- That test case is converted to assert it fails with a FIXME backlinking to #135817.
- The test coverage is expanded to not ignore windows. Instead, the test now uses symlink capability detection to gate test execution.
- Added some backlinks to relevant tracking issues and the initial translation infra implementation PR.
## Review advice
Best reviewed commit-by-commit.
r? compiler
try-job: aarch64-apple
try-job: i686-mingw
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Merge `PatKind::Path` into `PatKind::Expr`
Follow-up to #134228
We always had a duplication where `Path`s could be represented as `PatKind::Path` or `PatKind::Lit(ExprKind::Path)`. We had to handle both everywhere, and still do after #134228, so I'm removing it now.
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Rollup of 8 pull requests
Successful merges:
- #133382 (Suggest considering casting fn item as fn pointer in more cases)
- #136092 (Test pipes also when not running on Windows and Linux simultaneously)
- #136190 (Remove duplicated code in RISC-V asm bad-reg test)
- #136192 (ci: remove unused windows runner)
- #136205 (Properly check that array length is valid type during built-in unsizing in index)
- #136211 (Update mdbook to 0.4.44)
- #136212 (Tweak `&mut self` suggestion span)
- #136214 (Make crate AST mutation accessible for driver callback)
r? `@ghost`
`@rustbot` modify labels: rollup
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Tweak `&mut self` suggestion span
```
error[E0596]: cannot borrow `*self.s` as mutable, as it is behind a `&` reference
--> $DIR/issue-38147-1.rs:17:9
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LL | self.s.push('x');
| ^^^^^^ `self` is a `&` reference, so the data it refers to cannot be borrowed as mutable
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help: consider changing this to be a mutable reference
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LL | fn f(&mut self) {
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```
Note the suggestion to add `mut` instead of replacing the entire `&self` with `&mut self`.
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Properly check that array length is valid type during built-in unsizing in index
This results in duplicated errors, but this class of errors is not new; in general, we aren't really equipped to detect cases where a WF error due to a field type would be shadowed by the parent struct of that field also not being WF.
This also adds a note for these types of mismatches to make it clear that this is due to an array type.
Fixes #134352
r? boxyuwu
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Remove duplicated code in RISC-V asm bad-reg test
I added this test in https://github.com/rust-lang/rust/pull/132516, but I accidentally repeated the same check twice.
https://github.com/rust-lang/rust/blob/aa6f5ab18e67cb815f73e0d53d217bc54b0da924/tests/ui/asm/riscv/bad-reg.rs#L39-L42
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Suggest considering casting fn item as fn pointer in more cases
Fixes #132648
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Rollup of 9 pull requests
Successful merges:
- #136121 (Deduplicate operand creation between scalars, non-scalars and string patterns)
- #136134 (Fix SIMD codegen tests on LLVM 20)
- #136153 (Locate asan-odr-win with other sanitizer tests)
- #136161 (rustdoc: add nobuild typescript checking to our JS)
- #136166 (interpret: is_alloc_live: check global allocs last)
- #136168 (GCI: Don't try to eval / collect mono items inside overly generic free const items)
- #136170 (Reject unsound toggling of Arm atomics-32 target feature)
- #136176 (Render pattern types nicely in mir dumps)
- #136186 (uefi: process: Fix args)
r? `@ghost`
`@rustbot` modify labels: rollup
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Co-authored-by: Oneirical <manchot@videotron.ca>
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Render pattern types nicely in mir dumps
avoid falling through to the fallback rendering that just does a hex dump
r? ``@scottmcm``
best reviewed commit by commit
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GCI: Don't try to eval / collect mono items inside overly generic free const items
Fixes #136156. Thanks for the pointers, errs!
There's one (preexisting) thing of note (maybe?). There's a difference between `const _: () = panic!();` and `const _<'a>: () = panic!();`: The former is a pre-mono error, the latter is a post-mono error. For comparison, both `fn _f() { const { panic!() } }` and `fn _f<'a: 'a>() { const { panic!() } }` are post-mono errors.
cc `@oli-obk`
r? compiler-errors or reassign
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Locate asan-odr-win with other sanitizer tests
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Fix SIMD codegen tests on LLVM 20
The splat constants are printed differently on LLVM 20.
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Rollup of 7 pull requests
Successful merges:
- #135625 ([cfg_match] Document the use of expressions.)
- #135902 (Do not consider child bound assumptions for rigid alias)
- #135943 (Rename `Piece::String` to `Piece::Lit`)
- #136104 (Add mermaid graphs of NLL regions and SCCs to polonius MIR dump)
- #136143 (Update books)
- #136147 (ABI-required target features: warn when they are missing in base CPU)
- #136164 (Refactor FnKind variant to hold &Fn)
r? `@ghost`
`@rustbot` modify labels: rollup
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r=workingjubilee
ABI-required target features: warn when they are missing in base CPU
Part of https://github.com/rust-lang/rust/pull/135408:
instead of adding ABI-required features to the target we build for LLVM, check that they are already there. Crucially we check this after applying `-Ctarget-cpu` and `-Ctarget-feature`, by reading `sess.unstable_target_features`. This means we can tweak the ABI target feature check without changing the behavior for any existing user; they will get warnings but the target features behave as before.
The test changes here show that we are un-doing the "add all required target features" part. Without the full #135408, there is no way to take a way an ABI-required target feature with `-Ctarget-cpu`, so we cannot yet test that part.
Cc ``@workingjubilee``
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r=lcnr
Do not consider child bound assumptions for rigid alias
r? lcnr
See first commit for the important details. For second commit, I also stacked a somewhat opinionated name change, though I can separate that if needed.
Fixes https://github.com/rust-lang/trait-system-refactor-initiative/issues/149
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Revert #135914: Remove usages of `QueryNormalizer` in the compiler
Reverts #135914.
r? jackh726
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Rollup of 9 pull requests
Successful merges:
- #135869 (Make docs for AtomicUsize::from_mut platform-independent)
- #135892 (-Znext-solver: "normalize" signature before checking it mentions self in `deduce_closure_signature`)
- #136055 (Implement MIR const trait stability checks)
- #136066 (Pass spans to `perform_locally_in_new_solver`)
- #136071 ([Clippy] Add vec_reserve & vecdeque_reserve diagnostic items)
- #136124 (Arbitrary self types v2: explain test.)
- #136149 (Flip the `rustc-rayon`/`indexmap` dependency order)
- #136173 (Update comments and sort target_arch in c_char_definition)
- #136178 (Update username in build helper example)
r? `@ghost`
`@rustbot` modify labels: rollup
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```
error[E0596]: cannot borrow `*self.s` as mutable, as it is behind a `&` reference
--> $DIR/issue-38147-1.rs:17:9
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LL | self.s.push('x');
| ^^^^^^ `self` is a `&` reference, so the data it refers to cannot be borrowed as mutable
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help: consider changing this to be a mutable reference
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LL | fn f(&mut self) {
| +++
```
Note the suggestion to add `mut` instead of replacing the entire `&self` with `&mut self`.
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Arbitrary self types v2: explain test.
The purpose of this test wasn't obvious, as ```@traviscross``` noted. Add a comment.
Confession: although this test was added to demonstrate this particular corner-case, I can no longer reproduce the original problem, even if I adjust `rustc` to do the "wrong" thing. I have spent several hours trying to adjust the case to trigger the "faulty" behavior with no success. This test may therefore not be as useful as it originally was. But it still seems worthwhile retaining as a regression test that we don't break things in these quirky circumstances. Ideally we'd find a new test which tests this behavior but I've failed to come up with one.
r? ```@traviscross```
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Implement MIR const trait stability checks
Addresses https://github.com/rust-lang/project-const-traits/issues/16
cc ``@rust-lang/project-const-traits``
r? ``@RalfJung``
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Lower index bounds checking to `PtrMetadata`, this time with the right fake borrow semantics 😸
Change `Rvalue::RawRef` to take a `RawRefKind` instead of just a `Mutability`. Then introduce `RawRefKind::FakeForPtrMetadata` and use that for lowering index bounds checking to a `PtrMetadata`. This new `RawRefKind::FakeForPtrMetadata` acts like a shallow fake borrow in borrowck, which mimics the semantics of the old `Rvalue::Len` operation we're replacing.
We can then use this `RawRefKind` instead of using a span desugaring hack in CTFE.
cc ``@scottmcm`` ``@RalfJung``
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Trim extra whitespace in fn ptr suggestion span
Trim extra whitespace when suggesting removal of invalid qualifiers when parsing function pointer type.
Fixes: #133083
---
I made a comment about the format of the diagnostic error message in https://github.com/rust-lang/rust/issues/133083#issuecomment-2480047875. I think the `.label` may be a little redundant if the diagnostic only highlights the bad qualifier instead of the entire `TyKind::BareFn` span. If it makes sense, I can include it in this PR.
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Remove -Zinline-in-all-cgus and clean up tests/codegen-units/
Implementation of https://github.com/rust-lang/compiler-team/issues/814
I've taken some liberties with cleaning up the CGU partitioning tests, because that's the only place this flag was used and also mattered. I've often fought a lot with the contents of `tests/codegen-units` and it has never been clear to me when a test failure indicates a problem with my changes as opposed to a test just needing to be manually blessed. Hopefully the combination of the new README, new comments, and using `-Zprint-mono-items=lazy` in the partitioning tests improves that.
I've also deleted some of the `tests/run-make/sepcomp` tests. I think all the "sepcomp" tests have been obviated for years by better-designed (less flaky, clearer failures) test suites, but here I'm just deleting the ones I'm confident in.
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Windows x86: Change i128 to return via the vector ABI
Clang and GCC both return `i128` in xmm0 on windows-msvc and windows-gnu. Currently, Rust returns the type on the stack. Add a calling convention adjustment so we also return scalar `i128`s using the vector ABI, which makes our `i128` compatible with C.
In the future, Clang may change to return `i128` on the stack for its `-msvc` targets (more at [1]). If this happens, the change here will need to be adjusted to only affect MinGW.
Link: https://github.com/rust-lang/rust/issues/134288 (does not fix) [1]
try-job: x86_64-msvc
try-job: x86_64-msvc-ext1
try-job: x86_64-mingw-1
try-job: x86_64-mingw-2
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