linux-kernel - Re: [PATCH] mm/memory.c: remove warning from an uninitialized spinlock. was: Re: 2.6.21-rc7-mm2

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Date:	Sun, 29 Apr 2007 14:45:42 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Dave Jones <davej@...hat.com>
Cc:	bbpetkov@...oo.de, Andy Whitcroft <apw@...dowen.org>,
	linux-kernel@...r.kernel.org,
	Jeremy Fitzhardinge <jeremy@...source.com>
Subject: Re: [PATCH] mm/memory.c: remove warning from an uninitialized
 spinlock. was: Re: 2.6.21-rc7-mm2

On Sun, 29 Apr 2007 17:36:01 -0400 Dave Jones <davej@...hat.com> wrote:

> On Sun, Apr 29, 2007 at 02:24:40AM -0700, Andrew Morton wrote:
>  > On Sun, 29 Apr 2007 08:50:49 +0200 Borislav Petkov <bbpetkov@...oo.de> wrote:
>  > 
>  > > Introduce a macro for suppressing gcc from generating a warning about a probable
>  > > unitialized state of a variable.
>  > 
>  > I ended up doing the below.
>  > 
>  > It's better to make this a per-compiler-version thing: later versions of
>  > gcc might need different tricks, or might provide __attribute__((stfu)) or
>  > whatever.
> 
> __attribute__((unused))  ?

That'll prevent unused-variable warnings, but there doesn't appear to be
an attribute to prevent might-be-used-uninitialized warnings.
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