1 files changed, 1 insertions, 0 deletions

diff --git a/gc.h b/gc.h
index 664b079c..2db8d9f8 100644
--- a/gc.h
+++ b/gc.h
@@ -32,3 +32,4 @@ obj_t *make_obj(void);
 void gc(void);
 int gc_state(int);
 void gc_mark(obj_t *);
+int gc_is_reachable(obj_t *);