1 files changed, 1 insertions, 0 deletions
diff --git a/node.h b/node.h
index 382d266563..b96af5696f 100644
--- a/node.h
+++ b/node.h
@@ -371,6 +371,7 @@ typedef unsigned int rb_event_t;
 #define RUBY_EVENT_ALL      0xff
 
 typedef void (*rb_event_hook_func_t) _((rb_event_t,NODE*,VALUE,ID,VALUE));
+NODE *rb_copy_node_scope _((NODE *, NODE *));
 void rb_add_event_hook _((rb_event_hook_func_t,rb_event_t));
 int rb_remove_event_hook _((rb_event_hook_func_t));