Re: c++/10212: Preprocessor ## problem

[Falk Hueffner <falk.hueffner@student.uni-tuebingen.de>]

The following reply was made to PR c++/10212; it has been noted by GNATS.

From: Falk Hueffner <falk.hueffner@student.uni-tuebingen.de>
To: rwgk@cci.lbl.gov
Cc: gcc-gnats@gcc.gnu.org
Subject: Re: c++/10212: Preprocessor ## problem
Date: 25 Mar 2003 19:09:40 +0100

 rwgk@cci.lbl.gov writes:
 
 > The code below fails to compile with current cvs gcc 3.3:
 > 
 > % cat z.cpp
 > # define BOOST_PYTHON_INPLACE_OPERATOR(op)                      \
 >   template <class R>                                            \
 >   inline R                                                      \
 >   operator##op(R const& a, R const& b )                         \
 >   {                                                             \
 >       return a+b;                                               \
 >   }
 > 
 > BOOST_PYTHON_INPLACE_OPERATOR(+)
 > 
 > % gcc --version
 > gcc (GCC) 3.3 20030325 (prerelease)
 > % gcc -c z.cpp
 > z.cpp:9:32: pasting "operator" and "+" does not give a valid preprocessing token
 > % echo $status
 > 1
 > 
 > The original code compiles with a large number of compilers
 > incl. several EDG-based, Visual C++ and gcc 2.96 - gcc 3.2.2. Older
 > gcc's issue a warning which can be suppressed with -w.
 
 Well, gcc is right here, it's simply not valid code. Since C++ allows
 whitespace between "operator" and the operator token, you could just
 leave it off.
 
 -- 
 	Falk