linux-kernel - Re: [PATCH] debug: fix BUILD_BUG_ON() for non-constant expressions

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Message-ID: <20080817175343.GA7238@elte.hu>
Date:	Sun, 17 Aug 2008 19:53:43 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Rusty Russell <rusty@...tcorp.com.au>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Sam Ravnborg <sam@...nborg.org>,
	Lars Gullik Bjønnes <larsbj@...lik.net>
Subject: Re: [PATCH] debug: fix BUILD_BUG_ON() for non-constant expressions


* Ingo Molnar <mingo@...e.hu> wrote:

> +#define BUILD_BUG_ON_ZERO2(c)    (__BBO(c) - __BBONC(c))
> +#define BUILD_BUG_ON2(c)         (void)BUILD_BUG_ON_ZERO(c)
                                          ^^^^^^^^^^^^^^^^^
Lars Gullik Bjønnes pointed out that this should have been ZERO2 not 
ZERO - but same end result.

	Ingo
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