| Age | Commit message (Collapse) | Author | Lines |
|---|
|
workingjubilee:aarch64-linux-should-use-frame-pointers, r=compiler-errors
aarch64-linux: Default to FramePointer::NonLeaf
For aarch64-apple and aarch64-windows, platform docs state that code must use frame pointers correctly. This is because the AAPCS64 mandates that a platform specify its frame pointer conformance requirements:
- Apple: https://developer.apple.com/documentation/xcode/writing-arm64-code-for-apple-platforms#Respect-the-purpose-of-specific-CPU-registers
- Windows: https://learn.microsoft.com/en-us/cpp/build/arm64-windows-abi-conventions?view=msvc-170#integer-registers
- AAPCS64: https://github.com/ARM-software/abi-aa/blob/4492d1570eb70c8fd146623e0db65b2d241f12e7/aapcs64/aapcs64.rst#the-frame-pointer
Unwinding code either requires unwind tables or frame pointers, and on aarch64 the expectation is that one can use frame pointers for this. Most Linux targets represent a motley variety of possible distributions, so it is unclear who to defer to on conformance, other than perhaps Arm. In the absence of a specific edict for a given aarch64-linux target, Rust will assume aarch64-linux targets also use non-leaf frame pointers. This reflects what compilers like clang do.
|
|
std: fix aliasing bug in UNIX process implementation
`CStringArray` contained both `CString`s and their pointers. Unfortunately, since `CString` uses `Box`, moving the `CString`s into the `Vec` can (under stacked borrows) invalidate the pointer to the string, meaning the resulting `Vec<*const c_char>` was, from an opsem perspective, unusable. This PR removes removes the `Vec<CString>` from `CStringArray`, instead recreating the `CString`/`CStr` from the pointers when necessary. Also,`CStringArray` is now used for the process args as well, the old implementation was suffering from the same kind of bug.
|
|
Rollup of 7 pull requests
Successful merges:
- #136400 (Improve handling of rustdoc lints when used with raw doc fragments.)
- #140967 (Async drop poll shim for error dropee generates noop body)
- #141019 (Update std doctests for android)
- #141109 (discuss deadlocks in the std::io::pipe() example)
- #141126 (rustdoc JSON: Don't apply `#[repr]` privacy heuristics)
- #141376 (Rename `kw::Empty` as `sym::empty`.)
- #141383 (Miri subtree update)
r? `@ghost`
`@rustbot` modify labels: rollup
|
|
|
|
`CStringArray` contained both `CString`s and their pointers. Unfortunately, since `CString` uses `Box`, moving the `CString`s into the `Vec` can (under stacked borrows) invalidate the pointer to the string, meaning the resulting `Vec<*const c_char>` was, from an opsem perspective, unusable. This PR removes removes the `Vec<CString>` from `CStringArray`, instead recreating the `CString`/`CStr` from the pointers when necessary. Also,`CStringArray` is now used for the process args as well, the old implementation was suffering from the same kind of bug.
|
|
Miri subtree update
r? `@ghost`
|
|
Rename `kw::Empty` as `sym::empty`.
Because the empty string is not a keyword.
r? `@petrochenkov`
|
|
rustdoc JSON: Don't apply `#[repr]` privacy heuristics
Split out from #116882.
Context: https://github.com/rust-lang/rust/pull/116882#issuecomment-2888349161.
Partially reverts #138018.
cc `@obi1kenobi`
r? aDotInTheVoid or rustdoc
|
|
discuss deadlocks in the std::io::pipe() example
I think it's important to discuss deadlocks in examples of how to use pipes. The current example does include an explicit `drop()`, but it also implicitly relies on the fact that the `Command` object is temporary, so that it drops its copy of `pong_tx`. This sort of thing tends to trip people up when they use pipes for the first time. I might've gone overboard with the comments in this version, but I'm curious what folks think.
|
|
Update std doctests for android
This updates some doctests that fail to run on android. We will soon be supporting cross-compiled doctests, and the `arm-android` job fails to run these tests.
In summary:
- Android re-exports some traits from linux under a different path.
- Android doesn't seem to have common unix utilities like `true`, `false`, or `whoami`, so these are disabled.
|
|
azhogin:azhogin/async-drop-poll-shim-for-error-dropee-fix, r=oli-obk
Async drop poll shim for error dropee generates noop body
Fixes https://github.com/rust-lang/rust/issues/140930.
When dropee type for async drop poll shim is `ty::Error(_)`, the generated poll function will be noop body. To avoid ICE in `elaborate_drop`.
|
|
r=GuillaumeGomez
Improve handling of rustdoc lints when used with raw doc fragments.
1. `rustdoc::bare_urls` no longer outputs incoherent suggestions if `source_span_for_markdown_range` returns None, instead outputting no suggestion
2. `source_span_for_markdown_range` has one more heuristic, so it will return `None` less often.
3. add ui test to make sure we don't emit nonsense suggestions.
fixes https://github.com/rust-lang/rust/issues/135851
|
|
Update IDEs to use rustfmt 2024, fix Zed settings
Update IDEs to use rustfmt 2024, fix Zed settings
- Update IDE `rust-analyzer` settings to use 2024 rather than 2021.
- Fix Zed settings by removing `${workspaceFolder}/` from paths.
|
|
Defer evaluating type system constants when they use infers or params
Split out of #137972, the parts necessary for associated const equality and min generic const args to make progress and have correct semantics around when CTFE is invoked. According to a [previous perf run](https://perf.rust-lang.org/compare.html?start=93257e2d20809d82d1bc0fcc1942480d1a66d7cd&end=01b4cbf0f47c3f782330db88fa5ba199bba1f8a2&stat=instructions:u) of adding the new `const_arg_kind` query we should expect minor regressions here.
I think this is acceptable as we should be able to remove this query relatively soon once mgca is more complete as we'll then be able to implement GCE in terms of mgca and rip out `GCEConst` at which point it's trivial to determine what kind of anon const we're dealing with (either it has generics and is a repeat expr hack, or it doesnt and is a normal anon const).
This should only affect unstable code as we handle repeat exprs specially and those are the only kinds of type system consts that are allowed to make use of generic parameters.
Fixes #133066
Fixes #133199
Fixes #136894
Fixes #137813
r? compiler-errors
|
|
aarch64-softfloat: forbid enabling the neon target feature
This fixes https://github.com/rust-lang/rust/issues/134375 in a rather crude way, by making [the example](https://godbolt.org/z/r56xWo8nT) not build any more on aarch64-unknown-none-softfloat. That is a breaking change since the "neon" aarch64 target feature is stable, but this is justified as a soundness fix. Note that it's not "neon" which is problematic but "fp-armv8"; however, the two are tied together by rustc.
`-Ctarget-feature=+neon` still works, it just causes a warning (but one that we do hope to make a hard error eventually). Only `#[target_feature="neon"]` becomes a hard error with this PR.
More work on the LLVM side will be needed before we can let people use neon without impacting the ABI of float values (and, in particular, the ABI used by automatically inserted calls to libm functions, e.g. for int-to-float casts, which rustc has no control over).
Nominating for `@rust-lang/lang` since it is a breaking change. As-is this PR doesn't have a warning cycle; the hope is that the aarch64-unknown-none-softfloat target is sufficiently niche that there's no huge fallout and we can easily revert if it causes trouble. A warning cycle could be added but would need some dedicated rather hacky check in the target_feature attribute handling logic.
try-job: dist-various-1
|
|
Rollup of 7 pull requests
Successful merges:
- #135562 (Add ignore value suggestion in closure body)
- #139635 (Finalize repeat expr inference behaviour with inferred repeat counts)
- #139668 (Handle regions equivalent to 'static in non_local_bounds)
- #140218 (HIR ty lowering: Clean up & refactor the lowering of type-relative paths)
- #140435 (use uX::from instead of _ as uX in non - const contexts)
- #141130 (rustc_on_unimplemented cleanups)
- #141286 (Querify `coroutine_hidden_types`)
Failed merges:
- #140247 (Don't build `ParamEnv` and do trait solving in `ItemCtxt`s when lowering IATs)
r? `@ghost`
`@rustbot` modify labels: rollup
|
|
|
|
|
|
Move `dist-x86_64-linux` CI job to GitHub temporarily
To make it easier to migrate off the `rust-lang-ci/rust` repository.
r? `@marcoieni`
|
|
1. rustdoc::bare_urls doesn't output
invalid suggestions if source_span_for_markdown_range
fails to find a span
2. source_span_for_markdown_range tries harder to
return a span by applying an additional diagnostic
fixes https://github.com/rust-lang/rust/issues/135851
|
|
Rollup of 8 pull requests
Successful merges:
- #141355 (ci: improve citool job db errors)
- #141359 (Fix `FnOnce` impl for `AsyncFn`/`AsyncFnMut` self-borrowing closures in new solver)
- #141362 (Normalize aliases to correct kind of error term)
- #141377 (Remove unnecessary `is_empty` checks)
- #141381 (try_cast_aligned: avoid bare int-to-ptr casts)
- #141382 (ci: convert distcheck to free runner)
- #141389 (ci: prepare aws access keys for migration)
- #141390 (Don't allow `poly_select` in new solver)
r? `@ghost`
`@rustbot` modify labels: rollup
|
|
Don't allow `poly_select` in new solver
I added a `poly_select` call in #140519, but this causes an ICE since the new solver doesn't properly handle the "instantiate binder -> recanonicalize" step in the proof tree visitor.
While we could fix the select visitor to look at the next step in proof tree, it's not really necessary. Instead, let's enforce that all callees call the non-higher-ranked `select` function in the new solver.
Fixes https://github.com/rust-lang/rust/issues/141322
r? lcnr
|
|
ci: prepare aws access keys for migration
|
|
ci: convert distcheck to free runner
try-job: x86_64-gnu-distcheck
|
|
r=tgross35
try_cast_aligned: avoid bare int-to-ptr casts
This fixes a CI failure in https://github.com/rust-lang/miri-test-libstd caused by strict provenance violations in doctests added in https://github.com/rust-lang/rust/pull/141222.
r? `@tgross35`
Cc `@mathisbot`
|
|
r=GuillaumeGomez
Remove unnecessary `is_empty` checks
Part of #137978.
r? `@GuillaumeGomez`
|
|
Normalize aliases to correct kind of error term
Fixes #140642
When normalizing an alias to an error in the old solver, normalize to the same term kind as the alias being normalized instead of always to a type error.
r? lcnr
|
|
Fix `FnOnce` impl for `AsyncFn`/`AsyncFnMut` self-borrowing closures in new solver
This only affects closures that are "`AsyncFn`/`AsyncFnMut`" in their calling capability that are being called with the `FnOnce` trait.
fixes https://github.com/rust-lang/trait-system-refactor-initiative/issues/217
r? lcnr
|
|
ci: improve citool job db errors
|
|
Querify `coroutine_hidden_types`
This is necessary if we ever want to add implied bounds that would be used for higher-ranked coroutine auto trait goals (e.g. future implements `Send`).
Modest perf regression in `hyper` full build which (afaict?) is the only async stress test, so definitely worth it IMO.
r? oli-obk
|
|
rustc_on_unimplemented cleanups
Addresses some of the fixmes from https://github.com/rust-lang/rust/pull/139091 and https://github.com/rust-lang/rust/pull/140307.
- switch from `_Self` to `Self` in library
- properly validate that arguments in the `on` filter and the format strings are actually valid
See https://github.com/rust-lang/rustc-dev-guide/pull/2357 for the relevant documentation.
|
|
bend-n:use_ux_from_instead_of_bool_as_ux_unnecessary_transmutes, r=compiler-errors
use uX::from instead of _ as uX in non - const contexts
changes `transmute(bool) -> integer` to `integer::from` as opposed to `bool as integer`.
https://github.com/rust-lang/rust/pull/136083#discussion_r1985061667
`@rustbot` label L-unnecessary_transmutes
|
|
HIR ty lowering: Clean up & refactor the lowering of type-relative paths
While rebasing #126651 I realized that HIR ty lowering could benefit from some *spring cleaning* now that it's been extended to handle RTN and mGCA paths.
More seriously, similar to my merged PR #118668 which unified the handling of all *associated item constraints* (assoc ty, const (ACE) & fn (RTN)), this PR (commit https://github.com/rust-lang/rust/pull/140218/commits/695fcf517d8864b4812225643ef8cfc036ba9f61) partially[^1] deduplicates the resolution code for all *type-relative paths* (assoc ty, const (mGCA) & fn (RTN)).
**Why**? DRY'ing that part of the code means PR #126651 will automatically support RTN paths like `Ty::AssocTy::assoc_fn(..)` and it also implies shared diagnostic code and thus better diagnostics for RTN.
---
The other commits represent cleanups, renamings, moves. More notably, I've renamed path lowering methods to be a lot more descriptive, so ones lowering `QPath(Resolved)` paths now have `_resolved_` in their name and ones lowering `QPath(TypeRelative)` paths now have `_type_relative_` in their name. This should make it stupidly obvious what their purpose is.
---
Best reviewed commit by commit. The changes are close to trivial but the diff might make it look hairier.
r? compiler-errors
[^1]: Sadly, I couldn't unify as much compared to the other PR without introducing unnecessary `unreachable!()`s or rendering the code otherwise illegible with flags and micro helper traits.
|
|
Handle regions equivalent to 'static in non_local_bounds
`non_local_bounds` would only find non local bounds that strictly bound a given region, but it's possible that a local region is equated to 'static when showing a type referencing a locally bound lifetime, such as `dyn Any + 'a` in the tests added, is well-formed. In this case we should return 'static.
closes #122704
closes #139004
|
|
Finalize repeat expr inference behaviour with inferred repeat counts
I believe this should be the last change of how repeat exprs are handled before it's finished for `generic_arg_infer`. Assuming we don't wind up deciding to replace this all with a new predicate kind :)
This PR has three actual changes:
- Always defer the checks to end of typeck even when generic arg infer is not enabled (needs an FCP)
- Properly handle element exprs that are constants when the repeat count is inferred
- "Isolate" each repeat expr check so that inference constraints from `Copy` goals dont affect other repeat expr checks resulting in weird order-dependent inference
The commit history and tests should be relatively helpful for understanding this PR's impl.
r? compiler-errors
|
|
Add ignore value suggestion in closure body
Fixes #128561
r? `@estebank`
|
|
|
|
|
|
Fast path for processing some obligations in the new solver
Fast path applies to:
- Dyn compatibility predicates
- Region and type outlives predicates
- Trivially sized predicates
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
To make it easier to migrate off the `rust-lang-ci/rust` repository.
|
|
|
|
Emit a warning if the doctest `main` function will not be run
Fixes #140310.
I think we could try to go much further like adding a "link" (ie UI annotations) on the `main` function in the doctest. However that will require some more computation, not sure if it's worth it or not. Can still be done in a follow-up if we want it.
For now, this PR does two things:
1. Pass the `DiagCtxt` to the doctest parser to emit the warning.
2. Correctly generate the `Span` to where the doctest is starting (I hope the way I did it isn't too bad either...).
cc `@fmease`
r? `@notriddle`
|
|
|
