1 files changed, 8 insertions, 0 deletions
diff --git a/parse.y b/parse.y
index 702252acf0..61f89072dd 100644
--- a/parse.y
+++ b/parse.y
@@ -5358,6 +5358,14 @@ ruby_parser_stack_on_heap()
 }
 
 void
+rb_gc_mark_parser()
+{
+    if (ruby_in_compile) {
+        rb_gc_mark_maybe(yylval.val);
+    }
+}
+
+void
 rb_parser_append_print()
 {
     ruby_eval_tree =