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Date: Tue, 28 May 2013 09:06:48 -0700
From: "H. Peter Anvin" <hpa@zytor.com>
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To: Arnd Bergmann <arnd@arndb.de>
Subject: Re: [PATCH] arch: configuration, deleting 'CONFIG_BUG' since always
 need it.
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On 05/28/2013 08:43 AM, Arnd Bergmann wrote:
> 
> Right, that is what the patch I just posted does.
> 
> On a related note, I found that WARN_ON() can no longer be compiled
> out since there is already code that relies on the side-effects of
> the condition. I assume that was an intentional change I missed,
> since it used to be defined so that you could remove it completely.
> 

It is possible to define WARN_ON() as:

#define WARN_ON(x) ((void)(x))

... which preserves side effects.

	-hpa