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Re: PATCH: work-around for bug in -traditional-cpp

From: Neil Booth <neil at daikokuya dot co dot uk>
To: Marc Espie <espie at nerim dot net>
Cc: Andreas Schwab <schwab at suse dot de>, gcc at gcc dot gnu dot org,gcc-patches at gcc dot gnu dot org
Date: Sat, 29 Nov 2003 21:50:42 +0000
Subject: Re: PATCH: work-around for bug in -traditional-cpp
References: <20031125125336.GA3717@tetto.gentiane.org> <jeu14sh92h.fsf@sykes.suse.de> <20031129154742.GA17134@tetto.gentiane.org>

Marc Espie wrote:-

> On Tue, Nov 25, 2003 at 02:27:50PM +0100, Andreas Schwab wrote:
> > An even simpler test case:
> > 
> > #define a(b,c)
> > #if 0
> > #define b(x,y) a(x)
> > #endif
> > 
> > cpp.c:3: macro "a" requires 2 arguments, but only 1 given
> > 
> > Interestingly, changing #if 0 to #if 1 removes the error.
> 
> Okay, it looks like trad-cpp is messing with skipping.

If you're skipping you shouldn't even be attempting to expand
macros.

Neil.

Follow-Ups:
- Re: PATCH: work-around for bug in -traditional-cpp
  - From: Marc Espie

References:
- Bug in traditional cpp in gcc 3.3.2 ?
  - From: Marc Espie
- Re: Bug in traditional cpp in gcc 3.3.2 ?
  - From: Andreas Schwab
- PATCH: work-around for bug in -traditional-cpp
  - From: Marc Espie

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