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-rw-r--r--compiler/rustc_parse/src/parser/item.rs2
-rw-r--r--compiler/rustc_parse/src/validate_attr.rs12
2 files changed, 13 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 11424ec3724..bb5c1e0e653 100644
--- a/compiler/rustc_parse/src/validate_attr.rs
+++ b/compiler/rustc_parse/src/validate_attr.rs
@@ -283,6 +283,18 @@ pub fn check_builtin_meta_item(
                 | sym::rustc_confusables
                 | sym::rustc_skip_during_method_dispatch
                 | sym::rustc_pass_by_value
+                | sym::rustc_deny_explicit_impl
+                | sym::rustc_do_not_implement_via_object
+                | sym::rustc_coinductive
+                | sym::const_trait
+                | sym::rustc_specialization_trait
+                | sym::rustc_unsafe_specialization_marker
+                | sym::rustc_allow_incoherent_impl
+                | sym::rustc_coherence_is_core
+                | sym::marker
+                | sym::fundamental
+                | sym::rustc_paren_sugar
+                | sym::type_const
                 | sym::repr
                 | sym::align
                 | sym::deprecated