diff options
Diffstat (limited to 'compiler/rustc_parse/src')
| -rw-r--r-- | compiler/rustc_parse/src/validate_attr.rs | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/compiler/rustc_parse/src/validate_attr.rs b/compiler/rustc_parse/src/validate_attr.rs index 378cbb84637..555ab3cdb2b 100644 --- a/compiler/rustc_parse/src/validate_attr.rs +++ b/compiler/rustc_parse/src/validate_attr.rs @@ -180,9 +180,14 @@ pub fn check_attribute_safety( let diag_span = attr_item.span(); // Attributes can be safe in earlier editions, and become unsafe in later ones. + // + // Use the span of the attribute's name to determine the edition: the span of the + // attribute as a whole may be inaccurate if it was emitted by a macro. + // + // See https://github.com/rust-lang/rust/issues/142182. let emit_error = match unsafe_since { None => true, - Some(unsafe_since) => attr.span.edition() >= unsafe_since, + Some(unsafe_since) => path_span.edition() >= unsafe_since, }; if emit_error { |