Mercurial > hg

changeset 16071:8134ec8627e7 stable

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bdiff: fix malloc(0) issue in fixws() If fixws() is called on a zero-length string, malloc(0) is called and expected to return a pointer. Which it does on e.g. Linux. AIX returns NULL, which it is also legal, but the malloc() is then assumed to have failed. So ensure a valid pointer is always returned.
author Jim Hague <jim.hague@acm.org>
date Fri, 03 Feb 2012 23:27:17 +0000
parents f11eee00c652
children d1538789a1b3
files mercurial/bdiff.c
diffstat 1 files changed, 1 insertions(+), 1 deletions(-) [+]
line wrap: on
line diff
--- a/mercurial/bdiff.c	Mon Feb 06 14:37:49 2012 +0900
+++ b/mercurial/bdiff.c	Fri Feb 03 23:27:17 2012 +0000
@@ -443,7 +443,7 @@
 	r = PyBytes_AsString(s);
 	rlen = PyBytes_Size(s);
 
-	w = (char *)malloc(rlen);
+	w = (char *)malloc(rlen ? rlen : 1);
 	if (!w)
 		goto nomem;