linux-kernel - Re: Question on compiler warning

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Message-ID: <alpine.DEB.2.02.1401021354400.21537@chino.kir.corp.google.com>
Date:	Thu, 2 Jan 2014 13:56:49 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	Larry Finger <Larry.Finger@...inger.net>
cc:	Geert Uytterhoeven <geert@...ux-m68k.org>,
	linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Question on compiler warning

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.
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