linux-kernel - Re: [PATCH] take sched_debug.c out of nasal demon territory

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Date:	Mon, 6 Aug 2007 18:05:10 +0100
From:	Al Viro <viro@....linux.org.uk>
To:	Jan Engelhardt <jengelh@...putergmbh.de>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>, mingo@...hat.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] take sched_debug.c out of nasal demon territory

On Mon, Aug 06, 2007 at 05:51:29PM +0200, Jan Engelhardt wrote:
> 
> On Aug 6 2007 04:26, Al Viro wrote:
> >
> >	C99 6.10.3[11]: preprocessing directive within the argument list
> >of macro invocation => undefined behaviour.  Don't do that...
> 
> String concatenation ("a" "b") is not a preprocessing directive.

It is not, but #ifdef definitely is.
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