linux-kernel - Re: Question on compiler warning

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Date:	Thu, 02 Jan 2014 16:14:33 -0600
From:	Larry Finger <Larry.Finger@...inger.net>
To:	David Rientjes <rientjes@...gle.com>
CC:	Geert Uytterhoeven <geert@...ux-m68k.org>,
	linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Question on compiler warning

On 01/02/2014 03:56 PM, David Rientjes wrote:
> On Mon, 30 Dec 2013, Larry Finger wrote:
>
>> + /scratch/kisskb/src/drivers/net/wireless/b43/phy_n.c: warning: 'val_addr'
>> may be used uninitialized in this function [-Wuninitialized]: => 178:21
>>
>> This warning does not show up on any of my compilers, and it should not as the
>> initialization and usage of that variable both take place in conditional
>> branches that are testing exactly the same pointer.
>>
>
> You may not be compiling this file depending on your .config or you may
> have a different setting for CONFIG_CC_OPTIMIZE_FOR_SIZE.

I am definitely building this driver in my configuration. Variable 
CONFIG_CC_OPTIMIZE_FOR_SIZE was not set, but changing it to "y" did not change 
the result.

Thanks,

Larry


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