From: Rich Felker <dalias@aerifal.cx>
Date: Sun, 4 Sep 2011 04:06:01 +0000 (-0400)
Subject: fix twos complement overflow bug in mem streams boundary check
X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=commitdiff_plain;h=32d67e938e8da0f37c59247acee8b10eaf9a113c;hp=32d67e938e8da0f37c59247acee8b10eaf9a113c

fix twos complement overflow bug in mem streams boundary check

the expression -off is not safe in case off is the most-negative
value. instead apply - to base which is known to be non-negative and
bounded within sanity.
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