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| author | Jacob Pratt <jacob@jhpratt.dev> | 2025-03-27 13:11:17 -0400 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2025-03-27 13:11:17 -0400 |
| commit | 3a8621d681ab14db5cf928b2122c97872d57e291 (patch) | |
| tree | 929206f8977bc63eaa4d6c4c364eb6cb1fb37a23 /compiler/rustc_pattern_analysis/src/errors.rs | |
| parent | ecb170afc878648c3ae355dbd596c8e4b6f7ebdc (diff) | |
| parent | 92d802eda669d69481b99139523008df1c456ba8 (diff) | |
| download | rust-3a8621d681ab14db5cf928b2122c97872d57e291.tar.gz rust-3a8621d681ab14db5cf928b2122c97872d57e291.zip | |
Rollup merge of #138844 - petrochenkov:cfgtrace2, r=nnethercote
expand: Leave traces when expanding `cfg` attributes This is the same as https://github.com/rust-lang/rust/pull/138515, but for `cfg(true)` instead of `cfg_attr`. The difference is that `cfg(true)`s already left "traces" after themselves - the `cfg` attributes themselves, with `expanded_inert_attrs` set to true, with full tokens, available to proc macros. This is not a reasonably expected behavior, but it could not be removed without a replacement, because a [major rustdoc feature](https://github.com/rust-lang/rfcs/pull/3631) and a number of clippy lints rely on it. This PR implements a replacement. This needs a crater run, because it changes observable behavior (in an intended way) - proc macros can no longer see expanded `cfg(true)` attributes. (Some minor unnecessary special casing for `sym::cfg_attr` is also removed in this PR.) r? `@nnethercote`
Diffstat (limited to 'compiler/rustc_pattern_analysis/src/errors.rs')
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