diff options
| -rw-r--r-- | compiler/rustc_expand/src/expand.rs | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/compiler/rustc_expand/src/expand.rs b/compiler/rustc_expand/src/expand.rs index a035896d554..3dfa3cdcc35 100644 --- a/compiler/rustc_expand/src/expand.rs +++ b/compiler/rustc_expand/src/expand.rs @@ -841,6 +841,9 @@ impl<'a, 'b> MacroExpander<'a, 'b> { Err(guar) => return ExpandResult::Ready(fragment_kind.dummy(span, guar)), } } else if let SyntaxExtensionKind::LegacyAttr(expander) = ext { + // `LegacyAttr` is only used for builtin attribute macros, which have their + // safety checked by `check_builtin_meta_item`, so we don't need to check + // `unsafety` here. match validate_attr::parse_meta(&self.cx.sess.psess, &attr) { Ok(meta) => { let item_clone = macro_stats.then(|| item.clone()); |