From: Gregory P. Smith <greg@krypto.org>
Date: Tue, 4 Aug 2015 23:29:00 +0000 (-0700)
Subject: Don't left shift negative values.  Use an unsigned value instead to avoid
X-Git-Tag: v2.7.11rc1~202
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=0a8572800b08ee2598d3db2b7b24bd3884ba11cd;p=thirdparty%2FPython%2Fcpython.git

Don't left shift negative values.  Use an unsigned value instead to avoid
undefined behavior.
---

diff --git a/Modules/cPickle.c b/Modules/cPickle.c
index 91f3ee7bd5a0..89448a6f4190 100644
--- a/Modules/cPickle.c
+++ b/Modules/cPickle.c
@@ -3448,7 +3448,7 @@ calc_binint(char *s, int x)
      * to extend a BININT's sign bit to the full width.
      */
     if (x == 4 && l & (1L << 31))
-        l |= (~0L) << 32;
+        l |= (~0UL) << 32;
 #endif
     return l;
 }