linux-kernel - Re: [PATCH] ubifs: Fix build warning

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Date:	Mon, 25 Jun 2012 15:23:53 -0300
From:	Alexandre Pereira da Silva <aletes.xgr@...il.com>
To:	Randy Dunlap <rdunlap@...otime.net>
Cc:	Artem Bityutskiy <dedekind1@...il.com>,
	Adrian Hunter <adrian.hunter@...el.com>,
	linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ubifs: Fix build warning

On Mon, Jun 25, 2012 at 1:15 PM, Randy Dunlap <rdunlap@...otime.net> wrote:
> On 06/25/2012 08:19 AM, Alexandre Pereira da Silva wrote:
>
>> Fix:
>> fs/ubifs/dir.c: In function 'ubifs_rename':
>> fs/ubifs/dir.c:972:15: warning: 'saved_nlink' may be used uninitialized
>> in this function
>>
>> Initilize saved_nlink to 0
>
> Does nlink need to be init at all?  is the warning bogus or valid?

>From the code, this is a bogus warning.

> If the warning is bogus, the preferred solution is:
>
> #include <linux/compiler-gcc.h>
> ...
>        unsigned int uninitialized_var(nlink);

I will fix the patch as suggested. Thanks.
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