1 files changed, 3 insertions, 0 deletions
diff --git a/node.h b/node.h
index 7d8f6fcc9a..46332ca7bf 100644
--- a/node.h
+++ b/node.h
@@ -153,6 +153,9 @@ typedef struct RNode {
     } u3;
 } NODE;
 
+extern NODE *ruby_cref;
+extern NODE *ruby_top_cref;
+
 #define RNODE(obj)  (R_CAST(RNode)(obj))
 
 /* 0..4:T_TYPES, 5:FL_MARK, 6:reserved, 7:NODE_NEWLINE */