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From: Daniel Phillips <phillips@bonn-fries.net>
To: Andrew Morton <akpm@zip.com.au>, Anton Altaparmakov <aia21@cam.ac.uk>
Subject: Re: 2.4.9 does not compile [PATCH]
Date: Fri, 17 Aug 2001 04:05:46 +0200
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Cc: Jeff Dike <jdike@karaya.com>, Alan Cox <alan@lxorguk.ukuu.org.uk>,
        "David S. Miller" <davem@redhat.com>, tpepper@vato.org,
        f5ibh@db0bm.ampr.org, linux-kernel@vger.kernel.org
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On August 17, 2001 03:49 am, Andrew Morton wrote:
> Anton Altaparmakov wrote:
> > 
> > #define min(x,y) \
> >          ({ typeof(x) __x = (x); typeof(y) __y = (y); __x < __y ? __x : 
__y; })
> > 
> > int test(int a, int b, int c)
> > {
> >          return min(a, min(b, c));
> > }
> 
> Problems occur if the caller happens to pass in variables whose
> names confilct with the ones you chose in the above macro:

I remember the thread in detail.  We must have similar scoping problems in 
innumerable macros.  I'd a braindead flaw in C's scoping rules, and you know, 
I don't think it matters.  Don't use local variables with names like __foo.

--
Daniel