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Subject: Re: [PATCH -mm] sys_semctl gcc 4.1 warning fix
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Daniel Walker <dwalker@mvista.com>
Cc: akpm@osdl.org, linux-kernel@vger.kernel.org
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Date: Wed, 10 May 2006 16:09:47 +0100
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On Mer, 2006-05-10 at 07:31 -0700, Daniel Walker wrote:
> > Hiding warnings like this can be a hazard as it will hide real warnings
> > later on.
> 
> How could it hide real warnings? If anything these patch allow other
> (real warnings) to be seen . 

Because while the warning is present people will check it now and again.
If you set the variable to zero then you generate extra code and you
ensure nobody will look in future.