commit d340f6cd3f8b9417e8ff15a2adcada959878246c
author Mark Dickinson <dickinsm@gmail.com> Sun Nov 15 12:56:59 2009 +0000
committer Mark Dickinson <dickinsm@gmail.com> Sun Nov 15 12:56:59 2009 +0000
tree 9b59b2f87f7b6054739cd2f15d102c2d8b05c33c
parent b6447512ab853a92ff52a19c357fd354800ff638

Merged revisions 76298 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/branches/py3k

........
  r76298 | mark.dickinson | 2009-11-15 12:56:08 +0000 (Sun, 15 Nov 2009) | 1 line

  Fix another case of potential signed overflow.
........

Objects/rangeobject.c

diff --git a/Objects/rangeobject.c b/Objects/rangeobject.c
index 0fe119c..c8b10eb 100644
--- a/Objects/rangeobject.c
+++ b/Objects/rangeobject.c
@@ -354,7 +354,10 @@
 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;
 }