memstreams: fix incorrect handling of file pos > current size
authorRich Felker <dalias@aerifal.cx>
Sun, 4 Sep 2011 14:29:04 +0000 (10:29 -0400)
committerRich Felker <dalias@aerifal.cx>
Sun, 4 Sep 2011 14:29:04 +0000 (10:29 -0400)
commit7ee3dcb3c603b20fcd4547ffb00e11701c6d1cf4
treede55d7b177cbe5f095ac2745e65e5544254fc067
parentc88f36f55623124d09f48631974ca38aaec00057
memstreams: fix incorrect handling of file pos > current size

the addition is safe and cannot overflow because both operands are
positive when considered as signed quantities.
src/stdio/open_memstream.c
src/stdio/open_wmemstream.c