1 files changed, 1 insertions, 3 deletions
diff --git a/gc.h b/gc.h
index 4fe8033f..664b079c 100644
--- a/gc.h
+++ b/gc.h
@@ -23,9 +23,6 @@
  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */
-
-extern int opt_gc_debug;
-
 void gc_init(obj_t **stack_bottom);
 obj_t *prot1(obj_t **loc);
 void rel1(obj_t **loc);
@@ -34,3 +31,4 @@ void release(obj_t **, ...);
 obj_t *make_obj(void);
 void gc(void);
 int gc_state(int);
+void gc_mark(obj_t *);