Index: Objects/dictobject.c
===================================================================
--- Objects/dictobject.c	(Revision 65611)
+++ Objects/dictobject.c	(Arbeitskopie)
@@ -242,6 +242,10 @@
 		_Py_NewReference((PyObject *)mp);
 		if (mp->ma_fill) {
 			EMPTY_TO_MINSIZE(mp);
+		} else {
+			/* At least set ma_table and ma_mask; these are wrong
+			   if an empty but presized dict is added to freelist */
+			INIT_NONZERO_DICT_SLOTS(mp);
 		}
 		assert (mp->ma_used == 0);
 		assert (mp->ma_table == mp->ma_smalltable);