diff -r 627b6b94e774 -r 0784ac5cc347 jitcraft/Code.h
--- a/jitcraft/Code.h	Sat Jun 30 20:20:39 2012 -0700
+++ b/jitcraft/Code.h	Sat Jun 30 22:31:14 2012 -0700
@@ -75,7 +75,7 @@
     }
 
     static Code *cast(Object *obj) {
-        assert(obj->is(MapKind_Code));
+        assert(!obj || obj->is(MapKind_Code));
         return reinterpret_cast<Code *>(obj);
     }
 };