rust/compiler/rustc_pattern_analysis/src, branch 1.87.0

Auto merge of #133889 - compiler-errors:inh-unstable, r=Nadrieril

2025-03-20T14:31:34+00:00

Consider fields to be inhabited if they are unstable Fixes #133885 with a simple heuristic r? Nadrieril Not totally certain if this needs T-lang approval or a crater run.

Auto merge of #137930 - nnethercote:use-Wunused-crate-dependencies, r=jieyouxu,Nadrieril

2025-03-20T04:20:13+00:00

Use `Wunused-crate-dependencies` for the compiler An implementation of https://github.com/rust-lang/compiler-team/issues/844. r? `@jieyouxu`

Use `-Wunused_crate_dependencies` for compiler crates.

2025-03-19T21:59:43+00:00

It's very useful. There are some false positives involving integration tests in `rustc_pattern_analysis` and `rustc_serialize`. There is also a false positive involving `rustc_driver_impl`'s `rustc_randomized_layouts` feature. And I removed a `rustc_span` mention in a doc comment in `rustc_log` because it wasn't integral to the comment but caused a dev-dependency.

Rollup merge of #138001 - meithecatte:privately-uninhabited, r=Nadrieril

2025-03-19T15:52:54+00:00

mir_build: consider privacy when checking for irrefutable patterns This PR fixes #137999. Note that, since this makes the compiler reject code that was previously accepted, it will probably need a crater run. I include a commit that factors out a common code pattern into a helper function, purely because the fact that this was repeated all over the place was bothering me. Let me know if I should split that into a separate PR instead.

Dont consider fields that are forced unstable due to -Zforce-unstable-if-unmarked to be uninhabited

2025-03-18T18:24:02+00:00

Consider fields to be inhabited if they are unstable

2025-03-18T18:23:36+00:00

Remove `#![warn(unreachable_pub)]` from all `compiler/` crates.

2025-03-11T02:14:21+00:00

It's no longer necessary now that `-Wunreachable_pub` is being passed.

Revert "Use workspace lints for crates in `compiler/` #138084"

2025-03-10T10:12:47+00:00

Revert to buy time to consider options that avoids breaking downstream usages of cargo on distributed `rustc-src` artifacts, where such cargo invocations fail due to inability to inherit `lints` from workspace root manifest's `workspace.lints` (this is only valid for the source rust-lang/rust workspace, but not really the distributed `rustc-src` artifacts). This breakage was reported in . This reverts commit 48caf81484b50dca5a5cebb614899a3df81ca898, reversing changes made to c6662879b27f5161e95f39395e3c9513a7b97028.

Remove `#![warn(unreachable_pub)]` from all `compiler/` crates.

2025-03-07T21:41:43+00:00

(Except for `rustc_codegen_cranelift`.) It's no longer necessary now that `unreachable_pub` is in the workspace lints.

Add helper methods checking for "#[non_exhaustive] that's active"

2025-03-07T15:16:36+00:00

A check for `#[non_exhaustive]` is often done in combination with checking whether the type is local to the crate, in a variety of ways. Create a helper method and standardize on it as the way to check for this.