Implement a Method to Seal `DiagInner`'s Suggestions
This PR adds a method on `DiagInner` called `.seal_suggestions()` to prevent new suggestions from being added while preserving existing suggestions.
This is useful because currently there is no way to prevent new suggestions from being added to a diagnostic. `.disable_suggestions()` is the closest but it gets rid of all suggestions before and after the call.
Therefore, `.seal_suggestions()` can be used when, for example, misspelled keyword is detected and reported. In such cases, we may want to prevent other suggestions from being added to the diagnostic, as they would likely be meaningless once the misspelled keyword is identified. For context: https://github.com/rust-lang/rust/pull/129899#discussion_r1741307132
To store an additional state, the type of the `suggestions` field in `DiagInner` was changed into a three variant enum. While this change affects files across different crates, care was taken to preserve the existing code's semantics. This is validated by the fact that all UI tests pass without any modifications.
r? chenyukang
tests: allow trunc/select instructions to be missing
On LLVM 20, these instructions already get eliminated, which at least partially satisfies a TODO. I'm not talented enough at using FileCheck to try and constrain this further, but if we really want to we could copy an LLVM 20 specific version of this test that would restore it to being CHECK-NEXT: insertvalue ...
`@rustbot` label: +llvm-main
r? `@DianQK`
Remove redundant test typeid equality by subtyping
This known-bug label was a left over on #118247
r? `@jackh726`
This doesn't address #110395, I didn't investigate about it yet.
In 2021 pat was changed to recognize `|` at the top level, with
pat_param added to retain the old behavior. This means
pat is subject to the same cross-edition behavior as expr will be in
2024.
Co-authored-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>
There's a subtle interaction between macros with metavar expressions and the
edition-dependent fragment matching behavior. This test illustrates the current
behavior when using macro-generating-macros across crate boundaries with
different editions.
Co-Authored-By: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>
Co-Authored-By: Eric Holk <eric@theincredibleholk.org>
Don't call `extern_crate` when local crate name is the same as a dependency and we have a trait error
#124944 implemented logic to point out when a trait bound failure involves a *trait* and *type* who come from identically named but different crates. This logic calls the `extern_crate` query which is not valid on `LOCAL_CRATE` cnum, so let's filter that out eagerly.
Fixes#130272Fixes#129184
Encode `coroutine_by_move_body_def_id` in crate metadata
We synthesize the MIR for a by-move body for the `FnOnce` implementation of async closures. It can be accessed with the `coroutine_by_move_body_def_id` query. We weren't encoding this query in the metadata though, nor were we properly recording that synthetic MIR in `mir_keys`, so the `optimized_mir` wasn't getting encoded either!
Stacked on top is a fix to consider `DefKind::SyntheticCoroutineBody` to return true in several places I missed. Specifically, we should consider the def-kind in `fn DefKind::is_fn_like()`, since that's what we were using to make sure we ensure `query mir_inliner_callees` before the MIR gets stolen for the body. This led to some CI failures that were caught by miri but which I added a test for.
Use `Vec` in `rustc_interface::Config::locale_resources`
This allows a third-party tool to injects its own resources, when receiving the config via `rustc_driver::Callbacks::config`.
Fix#128930: Print documentation of CLI options missing their arg
Fix#128930. Failing to give an argument to CLI options which require it now prints something like:
```
$ rustc --print
error: Argument to option 'print' missing
Usage:
--print [crate-name|file-names|sysroot|target-libdir|cfg|check-cfg|calling-conventions|target-list|target-cpus|target-features|relocation-models|code-models|tls-models|target-spec-json|all-target-specs-json|native-static-libs|stack-protector-strategies|link-args|deployment-target]
Compiler information to print on stdout
```
On LLVM 20, these instructions already get eliminated, which at least
partially satisfies a TODO. I'm not talented enough at using FileCheck
to try and constrain this further, but if we really want to we could
copy an LLVM 20 specific version of this test that would restore it to
being CHECK-NEXT: insertvalue ...
@rustbot label: +llvm-main
Relate receiver invariantly in method probe for `Mode::Path`
Effectively reverts part of #126128Fixes#126227
This PR changes method probing to use equality for fully path-based method lookup, and subtyping for receiver `.` method lookup.
r? lcnr
Remove semi-nondeterminism of `DefPathHash` ordering from inliner
Déjà vu or something because I kinda thought I had put this PR up before. I recall a discussion somewhere where I think it was `@saethlin` mentioning that this check was no longer needed since we have "proper" cycle detection. Putting that up as a PR now.
This may slighlty negatively affect inlining, since the cycle breaking here means that we still inlined some cycles when the def path hashes were ordered in certain ways, this leads to really bad nondeterminism that makes minimizing ICEs and putting up inliner bugfixes difficult.
r? `@cjgillot` or `@saethlin` or someone else idk
run_make_support: rectify symlink handling
Avoid confusing Unix symlinks and Windows symlinks. Since their
semantics are quite different, we should avoid trying to make it
automagic in how symlinks are created and deleted. Notably, the tests
should reflect what type of symlinks are to be created to match what std
does to make it less surprising for test readers.
layout computation: gracefully handle unsized types in unexpected locations
This PR reworks the layout computation to eagerly return an error when encountering an unsized field where a sized field was expected, rather than delaying a bug and attempting to recover a layout. This is required, because with trivially false where clauses like `[T]: Sized`, any field can possible be an unsized type, without causing a compile error.
Since this PR removes the `delayed_bug` method from the `LayoutCalculator` trait, it essentially becomes the same as the `HasDataLayout` trait, so I've also refactored the `LayoutCalculator` to be a simple wrapper struct around a type that implements `HasDataLayout`.
The majority of the diff is whitespace changes, so viewing with whitespace ignored is advised.
implements https://github.com/rust-lang/rust/pull/123169#issuecomment-2025788480
r? `@compiler-errors` or compiler
fixes https://github.com/rust-lang/rust/issues/123134
fixes https://github.com/rust-lang/rust/issues/124182
fixes https://github.com/rust-lang/rust/issues/126939
fixes https://github.com/rust-lang/rust/issues/127737
For structs that cannot be unsized, the layout algorithm sometimes moves
unsized fields to the end of the struct, which circumvented the error
for unexpected unsized fields and returned an unsized layout anyway.
This commit makes it so that the unexpected unsized error is always
returned for structs that cannot be unsized, allowing us to remove an
old hack and fixing some old ICE.
Rollup of 3 pull requests
Successful merges:
- #130033 (Don't call `fn_arg_names` query for non-`fn` foreign items in resolver)
- #130282 (Do not report an excessive number of overflow errors for an ever-growing deref impl)
- #130437 (Avoid crashing on variadic functions when producing arg-mismatch errors)
r? `@ghost`
`@rustbot` modify labels: rollup
Avoid crashing on variadic functions when producing arg-mismatch errors
Fixes#130372 by accommodating how variadic functions change the argument list length between HIR body and FnDecls.
Also degrades the zip_eq to a debug_assert! to match other asserts in the area to avoid being disruptive to users. There is at least one other crash in this area I am working on in #130400 and also considering how we might refactor some of this code to hoist some of this logic up higher.
r? `@compiler-errors`
Do not report an excessive number of overflow errors for an ever-growing deref impl
Check that we don't first hit the recursion limit in `get_field_candidates_considering_privacy` before probing for methods when we have a method lookup failure and we want to see if `.field.method()` exists. We also silence overflow error messages if we're probing for methods for diagnostics.
Also renames some functions to make it clearer that they're only for diagnostics, and sprinkle some `Autoderef::silence_errors` around to silence unnecessary overflow errors that come from diagnostics.
Fixes#130224.
Rollup of 4 pull requests
Successful merges:
- #123436 (linker: Allow MSVC to use import libraries following the Meson/MinGW convention)
- #130410 (Don't ICE when generating `Fn` shim for async closure with borrowck error)
- #130412 (Don't ICE when RPITIT captures more method args than trait definition)
- #130436 (Ignore reduce-fadd-unordered on SGX platform)
r? `@ghost`
`@rustbot` modify labels: rollup
Ignore reduce-fadd-unordered on SGX platform
#130325 added the `tests/assembly/simd/reduce-fadd-unordered.rs` test. Unfortunately, the use of `CHECK: ret` makes that this test is not compatible with LVI mitigations applied for the SGX target. This PR makes sure this test is ignored for the SGX target, until a nicer solution is available.
Don't ICE when RPITIT captures more method args than trait definition
Make sure we don't ICE when an RPITIT captures more method args than the trait definition, which is not allowed. This was because we were using the wrong def id for error reporting.
Due to the default lifetime capture rules of RPITITs (capturing everything in scope), this is only doable if we use precise capturing, which isn't currently allowed for RPITITs anyways but we still end up reaching the relevant codepaths.
Fixes#129850
Don't use `typeck_root_def_id` in codegen for finding closure's root
Generating debuginfo in codegen currently peels off all the closure-specific generics (which presumably is done because they're redundant). This doesn't currently work correctly for the bodies we synthesize for async closures's returned coroutines (#128506), leading to #129702.
Specifically, `typeck_root_def_id` for some `DefKind::SyntheticCoroutineBody` just returns itself (because it loops while `is_typeck_child` is `true`, and that returns `false` for this defkind), which means we don't end up peeling off the coroutine-specific generics, and we end up encountering an otherwise unreachable `CoroutineWitness` type leading to an ICE.
This PR fixes `is_typeck_child` to consider `DefKind::SyntheticCorotuineBody` to be a typeck child, fixing `typeck_root_def_id` and suppressing this debuginfo bug.
Fixes#129702
Use -0.0 in `intrinsics::simd::reduce_add_unordered`
-0.0 is the actual neutral additive float, not +0.0, and this matters to codegen.
try-job: aarch64-gnu
simplify float::classify logic
I played around with the float-classify test in the hope of triggering x87 bugs by strategically adding `black_box`, and still the exact expression `@beetrees` suggested [here](https://github.com/rust-lang/rust/pull/129835#issuecomment-2325661597) remains the only case I found where we get the wrong result on x87. Curiously, this bug only occurs when MIR optimizations are enabled -- probably the extra inlining that does is required for LLVM to hit the right "bad" case in the backend. But even for that case, it makes no difference whether `classify` is implemented in the simple bit-pattern-based version or the more complicated version we had before.
Without even a single testcase that can distinguish our `classify` from the naive version, I suggest we switch to the naive version.
