commit e92951f8da5747f5fd00c7388d9fd8e811422cb3
author Alexander Belopolsky <alexander.belopolsky@gmail.com> Sat Feb 28 10:46:00 2015 -0500
committer Alexander Belopolsky <alexander.belopolsky@gmail.com> Sat Feb 28 10:46:00 2015 -0500
tree 3b02c301b935bd413c228cd91fbc1c545a5d9d5b
parent 184291aeb74249e644b3df581d240811e4b8a6e2
parent 63d1ff2a0b5d6d1287472dcc18ed83569f7c1096

merge

Modules/_collectionsmodule.c

diff --git a/Modules/_collectionsmodule.c b/Modules/_collectionsmodule.c
index 8494a47..d12f0e8 100644
--- a/Modules/_collectionsmodule.c
+++ b/Modules/_collectionsmodule.c
@@ -788,7 +788,9 @@
             while (n--)
                 b = b->rightlink;
         } else {
-            n = (deque->leftindex + Py_SIZE(deque) - 1) / BLOCKLEN - n;
+            n = (Py_ssize_t)(
+                    ((unsigned)(deque->leftindex + Py_SIZE(deque) - 1))
+                    / BLOCKLEN - n);
             b = deque->rightblock;
             while (n--)
                 b = b->leftlink;