1 files changed, 1 insertions, 0 deletions
diff --git a/gc.h b/gc.h
index aa79f556..99e0938d 100644
--- a/gc.h
+++ b/gc.h
@@ -44,6 +44,7 @@ void unmark(void);
 void gc_hint_func(val *);
 
 extern int gc_enabled;
+extern val **gc_prot_top;
 
 #if EXTRA_DEBUGGING
 val break_obj;