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Date: Sun, 17 May 2009 14:32:02 +0200
From: Christoph Mallon <christoph.mallon@gmx.de>
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To: Stanislav Sedov <stas@FreeBSD.org>
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Cc: sobomax@freebsd.org, freebsd-hackers@freebsd.org, rdivacky@freebsd.org,
	ed@freebsd.org, marius@alchemy.franken.de
Subject: Re: C99: Suggestions for style(9)
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Stanislav Sedov schrieb:
> On Fri, 01 May 2009 08:20:20 -0600 (MDT)
> "M. Warner Losh" <imp@bsdimp.com> mentioned:
>> It is a debugging aid, but one of dubious value for a far more
>> fundamental reason:
>>
>> 	    return;
>>
>> will break any macro.
>>
> 
> You can use variadic marcos in this case if the piece of code debugged
> uses void returns.

No, you cannot. Function like macros with ellipsis ("variadic macros") 
cannot be treated as object like macros. See ISO/IEC 9899:1999 (E) 
§6.10.3:4.

     Christoph