linux-kernel - Re: [PATCH 1/4] uml: cow_user.c warning corrections

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Message-ID: <CAGTPOqcAETWHG3DEOwDZkMG8_qd-opf90psCi=+U+tYcGV=7=A@mail.gmail.com>
Date:	Tue, 5 Jul 2011 14:10:34 +0300
From:	Vitaliy Ivanov <vitalivanov@...il.com>
To:	Richard Weinberger <richard@....at>
Cc:	Jeff Dike <jdike@...toit.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	user-mode-linux-devel@...ts.sourceforge.net,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/4] uml: cow_user.c warning corrections

On Tue, Jul 5, 2011 at 12:28 PM, Richard Weinberger <richard@....at> wrote:
> Am Dienstag 05 Juli 2011, 01:15:41 schrieb Vitaliy Ivanov:
>> From 6201d3e862fca8670b206338dc90303ea0acc77d Mon Sep 17 00:00:00 2001
>> From: Vitaliy Ivanov <vitalivanov@...il.com>
>> Date: Tue, 5 Jul 2011 01:57:51 +0300
>> Subject: [PATCH 1/4] uml: cow_user.c warning corrections
>> MIME-Version: 1.0
>> Content-Type: text/plain; charset=UTF-8
>> Content-Transfer-Encoding: 8bit
>>
>> arch/um/drivers/cow_user.c: In function ‘absolutize’:
>> arch/um/drivers/cow_user.c:189:7: warning: ignoring return value of
>> ‘chdir’, declared with attribute warn_unused_result
>
> What compiler flags are you using?
> Using the default settings this warning does not show up.
> Most of the "ignoring return value" are totally useless.

chdir is defined with warn_unused_result attribute and my gcc on
Ubuntu 11.04 issues warnings.
I don't use any additional flags on compiling UML.

Vitaliy
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