diff options
Diffstat (limited to 'compiler/rustc_feature/src')
| -rw-r--r-- | compiler/rustc_feature/src/builtin_attrs.rs | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/compiler/rustc_feature/src/builtin_attrs.rs b/compiler/rustc_feature/src/builtin_attrs.rs index fd936458f11..6fe65c88f71 100644 --- a/compiler/rustc_feature/src/builtin_attrs.rs +++ b/compiler/rustc_feature/src/builtin_attrs.rs @@ -760,10 +760,14 @@ pub static BUILTIN_ATTRIBUTES: &[BuiltinAttribute] = &[ template!(Word, List: r#""...""#), DuplicatesOk, EncodeCrossCrate::Yes, INTERNAL_UNSTABLE ), - // Trace that is left when a `cfg_attr` attribute is expanded. - // The attribute is not gated, to avoid stability errors, but it cannot be used in stable or - // unstable code directly because `sym::cfg_attr_trace` is not a valid identifier, it can only - // be generated by the compiler. + // Traces that are left when `cfg` and `cfg_attr` attributes are expanded. + // The attributes are not gated, to avoid stability errors, but they cannot be used in stable + // or unstable code directly because `sym::cfg_(attr_)trace` are not valid identifiers, they + // can only be generated by the compiler. + ungated!( + cfg_trace, Normal, template!(Word /* irrelevant */), DuplicatesOk, + EncodeCrossCrate::No + ), ungated!( cfg_attr_trace, Normal, template!(Word /* irrelevant */), DuplicatesOk, EncodeCrossCrate::No |