linux-kernel - [PATCH] tools: fread does not return negative on error

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Message-ID: <4A3FB09D.9050903@gmail.com>
Date:	Mon, 22 Jun 2009 18:26:05 +0200
From:	Roel Kluin <roel.kluin@...il.com>
To:	ingo <mingo@...e.hu>
CC:	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH] tools: fread does not return negative on error

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

Signed-off-by: Roel Kluin <roel.kluin@...il.com>
---
Is this correct? please review.

diff --git a/tools/perf/util/strbuf.c b/tools/perf/util/strbuf.c
index eaba093..376a337 100644
--- a/tools/perf/util/strbuf.c
+++ b/tools/perf/util/strbuf.c
@@ -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 (res == 0 && oldalloc == 0)
 		strbuf_release(sb);
 	return res;
 }
--
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