1 files changed, 1 insertions, 0 deletions
diff --git a/intern.h b/intern.h
index acbf33d123..84a92b3db5 100644
--- a/intern.h
+++ b/intern.h
@@ -292,6 +292,7 @@ ID rb_id_attrset _((ID));
 void rb_parser_append_print _((void));
 void rb_parser_while_loop _((int, int));
 int ruby_parser_stack_on_heap _((void));
+void rb_gc_mark_parser _((void));
 int rb_is_const_id _((ID));
 int rb_is_instance_id _((ID));
 int rb_is_class_id _((ID));