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perf_counter tools: Fix strbuf_fread() error path handling 

size_t res cannot be less than 0 - fread returns 0 on error.

[ Updated by: René Scharfe <rene.scharfe@lsrfire.ath.cx> ]

Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Junio C Hamano <gitster@pobox.com>
LKML-Reference: <4A3FB479.2090902@lsrfire.ath.cx>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Roel Kluin 2009-06-22 18:42:33 +02:00 committed by Ingo Molnar
parent cca03c0aeb
commit f7679dabfa
1 changed files with 1 additions and 1 deletions
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2
tools/perf/util/strbuf.c
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@ -259,7 +259,7 @@ size_t strbuf_fread(struct strbuf *sb, size_t size, FILE *f)
res = fread(sb->buf + sb->len, 1, size, f);
if (res > 0)
strbuf_setlen(sb, sb->len + res);
else if (res < 0 && oldalloc == 0)
else if (oldalloc == 0)
strbuf_release(sb);
return res;
}