1 files changed, 1 insertions, 0 deletions

diff --git a/gc.h b/gc.h
index 476535d3..760f7f1f 100644
--- a/gc.h
+++ b/gc.h
@@ -33,3 +33,4 @@ void gc(void);
 int gc_state(int);
 void gc_mark(val);
 int gc_is_reachable(val);
+void unmark(void);