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From: Keith Owens <kaos@ocs.com.au>
To: David Woodhouse <dwmw2@infradead.org>
cc: linux-kernel@vger.kernel.org
Subject: Re: macro conflict 
In-Reply-To: Your message of "Fri, 24 Aug 2001 14:03:34 +0100."
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Date: Fri, 24 Aug 2001 23:15:29 +1000
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On Fri, 24 Aug 2001 14:03:34 +0100, 
David Woodhouse <dwmw2@infradead.org> wrote:
>#define min(x,y) ({ if strcmp(STRINGIFY(typeof(x)), STRINGIFY(typeof(y))) BUG(); realmin(x,y) }) 

Did you try that?  Firstly typeof() is only defined in declaration
context, it gets an error when used in an expression.  Secondly
typeof() is not expanded by cpp so the stringify tricks do not work.
typeof(x) is handled by cc, not cpp.