diff -Naur a/Python-3.4.2/Objects/typeobject.c b/Python-3.4.2/Objects/typeobject.c
--- a/Python-3.4.2/Objects/typeobject.c	2014-10-08 13:48:15.000000000 +0530
+++ b/Python-3.4.2/Objects/typeobject.c	2014-11-27 10:17:06.736730936 +0530
@@ -5342,7 +5342,7 @@
                      "%s.__new__(%s) is not safe, use %s.__new__()",
                      type->tp_name,
                      subtype->tp_name,
-                     staticbase == NULL ? "?" : staticbase->tp_name);
+                     staticbase->tp_name);
         return NULL;
     }