1 files changed, 1 insertions, 0 deletions
diff --git a/node.c b/node.c
index bef9d7bcbd..f3dbf6e959 100644
--- a/node.c
+++ b/node.c
@@ -1407,6 +1407,7 @@ rb_ast_mark(rb_ast_t *ast)
 
         iterate_node_values(&nb->markable, mark_ast_value, NULL);
     }
+    if (ast->body.script_lines) rb_gc_mark(ast->body.script_lines);
 }
 
 void