clean up GVN TypeId test
addresses https://github.com/rust-lang/rust/pull/142789#discussion_r2184897992
This is an attempt to clarify what this test is actually supposed to test and make it less dependent on `TypeId` internals (it now depends on the output of `type_name` instead).
I verified that this version still miscompiles on `nightly-2025-02-11`.
r? ``@oli-obk`` ``@RalfJung``
remove special-casing of boxes from match exhaustiveness/usefulness analysis
As a first step in replacing `box_patterns` with `deref_patterns`, this treats box patterns as deref patterns in the THIR and exhaustiveness analysis. This allows a bunch of special-casing to be removed. The emitted MIR is unchanged.
Incidentally, this fixes a bug caused by box patterns being treated like structs rather than pointers, where enabling `exhaustive_patterns` (rust-lang/rust#51085) could give rise to spurious `unreachable_patterns` lints on arms required for exhaustiveness. Following the lint's advice to remove the match arm would result in an error. I'm not sure what the current state of `exhaustive_patterns` is with regard to reference/box opsem, or whether there's any intention to have `unreachable_patterns` be more granular than the whole arm, but regardless this should hopefully make them easier to handle consistently.
Tracking issue for deref patterns: rust-lang/rust#87121
r? `@Nadrieril`
Make -Ztrack-diagnostics emit like a note
[#t-compiler/diagnostics > Rendering -Ztrack-diagnostics like a note](https://rust-lang.zulipchat.com/#narrow/channel/147480-t-compiler.2Fdiagnostics/topic/Rendering.20-Ztrack-diagnostics.20like.20a.20note/with/526608647)
As discussed on the Zulip thread above, I want to make `-Ztrack-diagnostics` emit like a `note`. This is because I find its current output jarring, and the fact that it gets rendered completely left-aligned, [even in the middle of a snippet](86e05cd300/tests/ui/track-diagnostics/track6.stderr), seems like something that should be changed. Turning it into a `note` seems like the best choice, as it would align it with the rest of the output, and `note` is already used for somewhat similar things, like seeing why a lint was fired.
---
Note: turning `-Ztrack-diagnostics` into a `note` will also make `annotate-snippets` API a bit cleaner
This removes special-casing of boxes from `rustc_pattern_analysis`, as a
first step in replacing `box_patterns` with `deref_patterns`.
Incidentally, it fixes a bug caused by box patterns being represented as
structs rather than pointers, where `exhaustive_patterns` could generate
spurious `unreachable_patterns` lints on arms required for
exhaustiveness; following the lint's advice would result in an error.
Fast path nitpicks
Miscellaneous commits that I didn't really want to fold into anything else.
Fixes one theoretical bug with the fast path not considering polarity for `T: !Sized` bounds.
MIR inliner maintains unused var_debug_info
Only `full` debuginfo level promises variable-level debug information, but the MIR inline pass needlessly preserved the local variable debug info for the `limited` level too.
minicore: use core's `diagnostic::on_unimplemented` messages
Without these attributes, the error message is different. Keeping the diagnostics up-to-date seems related to https://github.com/rust-lang/rust/issues/137531.
The modified test files are reported in https://github.com/rust-lang/rust/issues/143319 as failing for `--target=riscv64gc-unknown-linux-gnu`. Using `minicore` for them makes it easier to troubleshoot this sort of issue.
r? ``@jieyouxu``
Fix rustdoc not correctly showing attributes on re-exports
Fixes attributes not being shown correctly in rustdoc on re-exports
Does this need to be backported to beta?
r? ``@jdonszelmann``
setup typos check in CI
This allows to check typos in CI, currently for compiler only (to reduce commit size with fixes). With current setup, exclude list is quite short, so it worth trying?
Also includes commits with actual typo fixes.
MCP: https://github.com/rust-lang/compiler-team/issues/817
typos check currently turned for:
* ./compiler
* ./library
* ./src/bootstrap
* ./src/librustdoc
After merging, PRs which enables checks for other crates (tools) can be implemented too.
Found typos will **not break** other jobs immediately: (tests, building compiler for perf run). Job will be marked as red on completion in ~ 20 secs, so you will not forget to fix it whenever you want, before merging pr.
Check typos: `python x.py test tidy --extra-checks=spellcheck`
Apply typo fixes: `python x.py test tidy --extra-checks=spellcheck:fix` (in case if there only 1 suggestion of each typo)
Current fail in this pr is expected and shows how typo errors emitted. Commit with error will be removed after r+.
Make the enum check work for negative discriminants
The discriminant check was not working correctly for negative numbers. This change fixes that by masking out the relevant bits correctly.
Fixesrust-lang/rust#143218.
Improve CSS for source code block line numbers
Extract some changes from https://github.com/rust-lang/rust/pull/137229 to make the PR smaller (thanks `@yotamofek` for the suggestion!).
r? notriddle
