diff -r 49bfe3bcd311 Objects/iterobject.c
--- a/Objects/iterobject.c	Wed May 08 00:27:50 2013 +0200
+++ b/Objects/iterobject.c	Wed May 08 00:37:27 2013 +0200
@@ -4,7 +4,7 @@
 
 typedef struct {
     PyObject_HEAD
-    long      it_index;
+    Py_ssize_t it_index;
     PyObject *it_seq; /* Set to NULL when iterator is exhausted */
 } seqiterobject;