From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Wed, 18 Nov 2009 21:31:52 +0000 (+0100)
Subject: strcmp: fix overflow and possibly signedness error
X-Git-Tag: v2.6.32-rc8~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a414f01ac2899f273ef8fe98fa44158ac12793f2;p=pandora-kernel.git

strcmp: fix overflow and possibly signedness error

Doing the strcmp return value as

	signed char __res = *cs - *ct;

is wrong for two reasons.  The subtraction can overflow because __res
doesn't use a type big enough.  Moreover the compared bytes should be
interpreted as unsigned char as specified by POSIX.

The same problem is fixed in strncmp.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Michael Buesch <mb@bu3sch.de>
Cc: Andreas Schwab <schwab@linux-m68k.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

Reading git-diff-tree failed