Re: [Boost-bugs] [Boost C++ Libraries] #3552: concatenation does not work with BOOST_PP_COMMA() with g++

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #3552: concatenation does not work with BOOST_PP_COMMA() with g++
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2010-03-25 20:47:27

#3552: concatenation does not work with BOOST_PP_COMMA() with g++
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  Reporter:  mkraemer@…             |       Owner:  no-maintainer
      Type:  Support Requests       |      Status:  closed       
 Milestone:  Boost 1.41.0           |   Component:  preprocessor 
   Version:  Boost 1.40.0           |    Severity:  Problem      
Resolution:  invalid                |    Keywords:               
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Changes (by danieljames):

  * status:  new => closed
  * resolution:  => invalid

Comment:

 You can't concatenate with a comma in the C preprocessor since
 concatenation has to create a single token and `test,` is two tokens. The
 Visual C++ preprocessor is not following the standard when it allows it.
 There's not really any point in concatenating `test` and `BOOST_PP_COMMA`,
 since you can just write:
 {{{
 test BOOST_PP_COMMA()
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/3552#comment:2>
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