linux-kernel - Re: [PATCH 2.6.19-rc3] i386/io_apic: fix compiler warning in create

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Message-Id: <20061030170445.1dedce1e.akpm@osdl.org>
Date:	Mon, 30 Oct 2006 17:04:45 -0800
From:	Andrew Morton <akpm@...l.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Stefan Richter <stefanr@...6.in-berlin.de>,
	Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2.6.19-rc3] i386/io_apic: fix compiler warning in
 create_irq

On Mon, 30 Oct 2006 10:02:31 +0100
Ingo Molnar <mingo@...e.hu> wrote:

> * Stefan Richter <stefanr@...6.in-berlin.de> wrote:
> 
> > Fix warning
> > arch/i386/kernel/io_apic.c: In function `create_irq':
> > arch/i386/kernel/io_apic.c:2420: warning: 'vector' might be used uninitialized in this function
> 
> > @@ -2421,6 +2421,7 @@ int create_irq(void)
> >  	unsigned long flags;
> >  
> >  	irq = -ENOSPC;
> > +	vector = 0;
> 
> NAK - the code is fine, and this is fixed in Jeff's gcc-warnings tree 
> via annotation.

err, what gcc-warnings tree?

git+ssh://master.kernel.org/pub/scm/linux/kernel/git/jgarzik/misc-2.6.git#gccbug
just does lots of initialise-to-zero thingies, doesn't have any special
annotation and doesn't fix io_apic.c.

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