linux-kernel - Re: [tip:core/urgent] WARN_ON_SMP(): Add comment to explain ({0;})

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Message-ID: <4D90A1FE.4000405@zytor.com>
Date:	Mon, 28 Mar 2011 07:58:06 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	richard -rw- weinberger <richard.weinberger@...il.com>
CC:	linux-kernel@...r.kernel.org, mingo@...hat.com,
	torvalds@...ux-foundation.org, rostedt@...dmis.org,
	srostedt@...hat.com, tglx@...utronix.de, adobriyan@...il.com,
	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:core/urgent] WARN_ON_SMP(): Add comment to explain ({0;})

On 03/28/2011 07:56 AM, richard -rw- weinberger wrote:
>>
>> What the heck is wrong with the idiomatic and non-gcc-extension-using:
>>
>>        ((void)0)
>>
>> ?
> 
> AFAIK you cannot use it within an if-statement.
> 

OK, fair enough.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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