commit b43dbc26f9abbd6bf96bd95e6701719575c57341
author Mark Dickinson <dickinsm@gmail.com> Sun Nov 15 12:56:08 2009 +0000
committer Mark Dickinson <dickinsm@gmail.com> Sun Nov 15 12:56:08 2009 +0000
tree 16409c39e67e51e3bb9891b67af0e62cba4ae2a9
parent f4817e59299dde54d219d2f4983bb1945a5d1f5e

Fix another case of potential signed overflow.

Objects/rangeobject.c

diff --git a/Objects/rangeobject.c b/Objects/rangeobject.c
index cabe785..ec75c8f 100644
--- a/Objects/rangeobject.c
+++ b/Objects/rangeobject.c
@@ -411,7 +411,10 @@
 rangeiter_next(rangeiterobject *r)
 {
     if (r->index < r->len)
-        return PyLong_FromLong(r->start + (r->index++) * r->step);
+        /* cast to unsigned to avoid possible signed overflow 
+           in intermediate calculations. */
+        return PyLong_FromLong((long)(r->start +
+                                      (unsigned long)(r->index++) * r->step));
     return NULL;
 }