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Re: C++ preprocessor bug or not ?

To: John Levon <moz at compsoc dot man dot ac dot uk>
Subject: Re: C++ preprocessor bug or not ?
From: Philipp Thomas <pthomas at suse dot de>
Date: Tue, 6 Feb 2001 19:05:20 +0100
Cc: gcc at gcc dot gnu dot org
References: <Pine.LNX.4.21.0102061144440.15285-100000@mrworry.compsoc.man.ac.uk>

* John Levon (moz@compsoc.man.ac.uk) [20010206 12:47]:

> The following code (cut from qt 1.45) :
> 
> #if defined(xor)
> // blah
> #endif
> 
> is not appreciated by g++ > 2.95.2
> 
> "/tmp/@21568.7.cc:1:13: "defined" without an identifier"
> 
> 1) shouldn't this be parse error, if xor is a keyword by default now ?
> 
> 2) is this definitely Qt's fault (if so, I will have to work around it
>    in a very ugly way)

This is Qt's fault, which Trolltech fixed in Qt 2.0. For 1.X, the easiest
way is to pass -fno-operator-names to g++.

Philipp

-- 
Philipp Thomas <pthomas@suse.de>
Development, SuSE GmbH, Schanzaecker Str. 10, D-90443 Nuremberg, Germany

Penguins shall save the dinosaurs
                          -- Handelsblatt about Linux on S/390

References:
- C++ preprocessor bug or not ?
  - From: John Levon

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