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-rw-r--r--compiler/rustc_parse/src/parser/item.rs2
-rw-r--r--compiler/rustc_parse/src/validate_attr.rs4
2 files changed, 5 insertions, 1 deletions
diff --git a/compiler/rustc_parse/src/parser/item.rs b/compiler/rustc_parse/src/parser/item.rs
index 9ed7124a11c..d6cc98d505c 100644
--- a/compiler/rustc_parse/src/parser/item.rs
+++ b/compiler/rustc_parse/src/parser/item.rs
@@ -2206,7 +2206,7 @@ impl<'a> Parser<'a> {
 
             if self.look_ahead(1, |t| *t == token::Bang) && self.look_ahead(2, |t| t.is_ident()) {
                 return IsMacroRulesItem::Yes { has_bang: true };
-            } else if self.look_ahead(1, |t| (t.is_ident())) {
+            } else if self.look_ahead(1, |t| t.is_ident()) {
                 // macro_rules foo
                 self.dcx().emit_err(errors::MacroRulesMissingBang {
                     span: macro_rules_span,
diff --git a/compiler/rustc_parse/src/validate_attr.rs b/compiler/rustc_parse/src/validate_attr.rs
index 67b68e77d2b..11424ec3724 100644
--- a/compiler/rustc_parse/src/validate_attr.rs
+++ b/compiler/rustc_parse/src/validate_attr.rs
@@ -271,6 +271,10 @@ pub fn check_builtin_meta_item(
         if matches!(
             name,
             sym::inline
+                | sym::export_stable
+                | sym::ffi_const
+                | sym::ffi_pure
+                | sym::rustc_std_internal_symbol
                 | sym::may_dangle
                 | sym::rustc_as_ptr
                 | sym::rustc_pub_transparent