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As a sanity check, [this tool] can be used to run a CSS query across an HTML
tree to detect if a selector ever matches (I use compiler-docs and std
docs). This isn't good enough, because I also need to account for JavaScript,
but this class is never mentioned in any of the JS files, either.
According to [blame], this class was added when rustdoc was first written,
and, as far as I can tell, was never actually used.
[this tool]: https://gitlab.com/notriddle/html-scanner
[blame]: https://github.com/rust-lang/rust/blame/4d45b0745ab227feb9000bc15713ade4b99241ea/src/librustdoc/html/static/css/rustdoc.css#L753-L761
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fluent: mandate slug names to be prefixed by crate name
This is currently only convention, but not actively checked for.
Additionally, improve error messages to highlight the path of the offending fluent file rather than the identifier preceding it.
This will conflict with #100671, so I'll leave it as draft until that's merged.
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Move Error trait into core
This PR moves the error trait from the standard library into a new unstable `error` module within the core library. The goal of this PR is to help unify error reporting across the std and no_std ecosystems, as well as open the door to integrating the error trait into the panic reporting system when reporting panics whose source is an errors (such as via `expect`).
This PR is a rewrite of https://github.com/rust-lang/rust/pull/90328 using new compiler features that have been added to support error in core.
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Rollup of 9 pull requests
Successful merges:
- #99249 (Do not re-parse function signatures to suggest generics)
- #100309 (Extend comma suggestion to cases where fields arent missing)
- #100368 (InferCtxt tainted_by_errors_flag should be Option<ErrorGuaranteed>)
- #100768 (Migrate `rustc_plugin_impl` to `SessionDiagnostic`)
- #100835 (net listen backlog update, follow-up from #97963.)
- #100851 (Fix rustc_parse_format precision & width spans)
- #100857 (Refactor query modifier parsing)
- #100907 (Fix typo in UnreachableProp)
- #100909 (Minor `ast::LitKind` improvements)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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r=petrochenkov
Minor `ast::LitKind` improvements
r? `@petrochenkov`
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Fix typo in UnreachableProp
r? ``@Dylan-DPC``
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Refactor query modifier parsing
Reduce redundancy and improve error spans.
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Fix rustc_parse_format precision & width spans
When a `precision`/`width` was `CountIsName - {:name$}` or `CountIs - {:10}` the `precision_span`/`width_span` was set to `None`
For `width` the name span in `CountIsName(_, name_span)` had its `.start` off by one
r? ``@fee1-dead`` / cc ``@PrestonFrom`` since this is similar to #99987
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net listen backlog update, follow-up from #97963.
FreeBSD and using system limit instead for others.
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Migrate `rustc_plugin_impl` to `SessionDiagnostic`
Migration of the `rustc_plugin_impl` crate.
~Draft PR because it is blocked on #100694 for `#[fatal(...)]` support~ (this has been merged, and I've changed over to `#[diag(...)]` now too), but I would also like to know if what I did with `LoadPluginError` is okay, because all it does is display the error message from `libloading` ([See conversation on zulip](https://rust-lang.zulipchat.com/#narrow/stream/147480-t-compiler.2Fwg-diagnostics/topic/.23100717.20diagnostic.20translation/near/294327843)). This crate is apparently for a deprecated feature which is used by servo, so I don't know how much this matters anyway.
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InferCtxt tainted_by_errors_flag should be Option<ErrorGuaranteed>
Fixes #100321.
Use Cell<Option<ErrorGuaranteed>> to guarantee that we emit an error when that flag is set.
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Extend comma suggestion to cases where fields arent missing
Fixes #100300
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Do not re-parse function signatures to suggest generics
This PR uses the existing resolution rib infrastructure to channel the correct span information to suggest generic parameters. This allows to avoid re-parsing a function's source code.
Drive-by cleanup: this removes useless `FnItemRibKind` from late resolution ribs. All the use cases are already covered by `ItemRibKind` and `AssocItemRibKind` which have more precise semantics.
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Align android `sigaddset` impl with the reference impl from Bionic
In https://github.com/rust-lang/rust/pull/100737 I noticed we were treating the sigset_t as an array of bytes, while referencing code from android (https://github.com/aosp-mirror/platform_bionic/blob/ad8dcd6023294b646e5a8288c0ed431b0845da49/libc/include/android/legacy_signal_inlines.h) which treats it as an array of unsigned long.
That said, the behavior difference is so subtle here that it's not hard to see why nobody noticed. This fixes the implementation to be equivalent to the one in bionic.
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Because it's never used meaningfully.
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Rollup of 9 pull requests
Successful merges:
- #100382 (Make the GATS self outlives error take into GATs in the inputs)
- #100565 (Suggest adding a missing semicolon before an item)
- #100641 (Add the armv4t-none-eabi target to the supported_targets)
- #100789 (Use separate infcx to solve obligations during negative coherence)
- #100832 (Some small bootstrap cleanup)
- #100861 (fix ICE with extra-const-ub-checks)
- #100862 (tidy: remove crossbeam-utils)
- #100887 (Refactor part of codegen_call_terminator)
- #100893 (Remove out-of-context comment in `mem::MaybeUninit` documentation)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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Remove out-of-context comment in `mem::MaybeUninit` documentation
Reverted the comment to an earlier version to avoid confusion: neither raw pointer assignment nor `ptr::write` is used inside the for loop.
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Refactor part of codegen_call_terminator
I was reading through this code and found the chain of `if let` and a nested match on the same value that was matched in the `if let` to be kind of hard to follow. This PR cleans it up by flattening the `if let` chain and nested match into a single `match` expression.
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tidy: remove crossbeam-utils
crossbeam-utils is no longer needed now that scoped threads are available in 1.63.
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fix ICE with extra-const-ub-checks
Fixes https://github.com/rust-lang/rust/issues/100771
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Some small bootstrap cleanup
This is a collection of a few small cleanups. See commits for more details.
* Remove some unused fields from the tool_extended macro.
* Remove rustfmt from publish_toolstate.
* Remove Steve from toolstate failure notices.
* Don't allow rustfmt to fail on dist.
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Use separate infcx to solve obligations during negative coherence
I feel like I fixed this already but I may have fixed it then forgot to push the branch...
Also fixes up some redundant param-envs being passed around (since they're already passed around in the `Obligation`)
Fixes #99662
r? ``@spastorino``
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Add the armv4t-none-eabi target to the supported_targets
This target was added in #100244 but forgot to add it to the macro in the `mod.rs` file.
``@Lokathor``
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TaKO8Ki:suggest-adding-missing-semicolon-before-item, r=compiler-errors
Suggest adding a missing semicolon before an item
fixes #100533
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Make the GATS self outlives error take into GATs in the inputs
Before, the reasoning was that outlives should factor in to the outlives error, because that value is produced and inputs aren't. However, this is potentially confusing, and we can just require this for now and relax it later if we need. GATs in where clauses still don't count for the self outlives error, and I've added a test for that.
This now errors:
```rust
trait Input {
type Item<'a>;
//~^ missing required
fn takes_item<'a>(&'a self, item: Self::Item<'a>);
}
```
I've also added a test that this does not:
```rust
trait WhereClause {
type Item<'a>;
fn takes_item<'a>(&'a self) where Self::Item<'a>: ;
}
```
r? ``@compiler-errors``
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r=aDotInTheVoid
Improve rustdoc json tests
Fixes #100588.
r? `@aDotInTheVoid`
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Simplify implementation for par_for_each_module
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UnreachableProp: Preserve unreachable branches for multiple targets
Before, UnreachablePropagation removed all unreachable branches. This was a pessimization, as it removed information about reachability that was used later in the optimization pipeline.
For example, this code
```rust
pub enum Two { A, B }
pub fn identity(x: Two) -> Two {
match x {
Two::A => Two::A,
Two::B => Two::B,
}
}
```
basically has `switchInt() -> [0: 0, 1: 1, otherwise: unreachable]` for the match. This allows it to be transformed into a simple `x`. If we remove the unreachable branch, the transformation becomes illegal.
This was the problem keeping `UnreachablePropagation` from being enabled, so we can enable it now.
Something similar already happened in #77800, but it did not show a perf improvement there. Let's try it again anyways!
Fixes #68105, although that issue has been fixed for a long time (see #77680).
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Rollup of 8 pull requests
Successful merges:
- #98200 (Expand potential inner `Or` pattern for THIR)
- #99770 (Make some const prop mir-opt tests `unit-test`s)
- #99957 (Rework Ipv6Addr::is_global to check for global reachability rather than global scope - rebase)
- #100331 (Guarantee `try_reserve` preserves the contents on error)
- #100336 (Fix two const_trait_impl issues)
- #100713 (Convert diagnostics in parser/expr to SessionDiagnostic)
- #100820 (Use pointer `is_aligned*` methods)
- #100872 (Add guarantee that Vec::default() does not alloc)
Failed merges:
r? `@ghost`
`@rustbot` modify labels: rollup
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FreeBSD and using system limit instead for others.
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Add guarantee that Vec::default() does not alloc
Currently `Vec::new()` is guaranteed to not allocate until elements are pushed onto the `Vec`, but such a guarantee is missing for `Vec`'s implementation of `Default::default`.
This adds such a guarantee for `Vec::default()` to the API reference.
See also [this discussion on URLO](https://users.rust-lang.org/t/guarantee-that-vec-default-does-not-allocate/79903).
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Use pointer `is_aligned*` methods
This PR replaces some manual alignment checks with calls to `pointer::{is_aligned, is_aligned_to}` and removes a useless pointer cast.
r? `@scottmcm`
_split off from #100746_
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Convert diagnostics in parser/expr to SessionDiagnostic
This migrates all the easy cases in `rustc_parse::parser::expr` to `SessionDiagnostic`s, I've left things such as `multipart_suggestion`s out for now in the hopes of a derive API being developed soon.
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Fix two const_trait_impl issues
r? ``@oli-obk``
Fixes #100222.
Fixes #100543.
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Guarantee `try_reserve` preserves the contents on error
Update doc comments to make the guarantee explicit. However, some
implementations does not have the statement though.
* `HashMap`, `HashSet`: require guarantees on hashbrown side.
* `PathBuf`: simply redirecting to `OsString`.
Fixes #99606.
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r=Mark-Simulacrum
Rework Ipv6Addr::is_global to check for global reachability rather than global scope - rebase
Rebasing of pull request #86634 off of master to try and get the feature "ip" stabilized.
I also found a test failure in the rebase that is_global was considering the benchmark space to be globally reachable.
This is related to my other rebasing pull request #99947
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Make some const prop mir-opt tests `unit-test`s
Most of these have no or only tiny diffs beyond line numbers being changed (would it make sense to not have line numbers in mir-opt tests?). Some things changed a bit, but I think it should all be fine, not sure though.
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Expand potential inner `Or` pattern for THIR
Code assumed there wouldn't be a deeper `Or` pattern inside expanded `PatStack` this fixes it by looking for the `Or` pattern inside expanded `PatStack`.
A more ideal solution would be recursively doing this but I haven't found a good way to do that.
_fixes #97898_
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