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

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Date:	Mon, 22 Jun 2009 18:42:33 +0200
From:	René Scharfe <rene.scharfe@...fire.ath.cx>
To:	roel kluin <roel.kluin@...il.com>
CC:	Ingo Molnar <mingo@...e.hu>, git@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Junio C Hamano <gitster@...ox.com>
Subject: [PATCH] fread does not return negative on error

Hi,

the following patch is for git.  I just removed the unneeded check for
res == 0 from your version.  Does it look OK?

Thanks,
René

--- snip! ---
From: Roel Kluin <roel.kluin@...il.com>

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

Reported-by: Ingo Molnar <mingo@...e.hu>
Signed-off-by: Roel Kluin <roel.kluin@...il.com>
---
 strbuf.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/strbuf.c b/strbuf.c
index a884960..f03d117 100644
--- a/strbuf.c
+++ b/strbuf.c
@@ -260,7 +260,7 @@ 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;
 }
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