2 files changed, 5 insertions, 1 deletions
diff --git a/ChangeLog b/ChangeLog
index 433f8aa375..8efe4eb38b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Mon Dec 16 18:04:28 2013  Koichi Sasada  <ko1@atdot.net>
+
+	* gc.c (rb_objspace_markable_object_p): it should be live objects.
+
 Mon Dec 16 18:00:51 2013  Koichi Sasada  <ko1@atdot.net>
 
 	* gc.c (rb_objspace_each_objects): should not clear dont_lazy_sweep
diff --git a/gc.c b/gc.c
index 077f35bd3c..c4cad35e85 100644
--- a/gc.c
+++ b/gc.c
@@ -2266,7 +2266,7 @@ is_markable_object(rb_objspace_t *objspace, VALUE obj)
 int
 rb_objspace_markable_object_p(VALUE obj)
 {
-    return is_markable_object(&rb_objspace, obj);
+    return is_live_object(obj) && is_markable_object(&rb_objspace, obj);
 }
 
 /*