Re: [Boost-bugs] [Boost C++ Libraries] #4353: warning needs suppressed --> warning: "_MSC_VER" is not defined

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #4353: warning needs suppressed --> warning: "_MSC_VER" is not defined
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2010-06-20 20:09:48

#4353: warning needs suppressed --> warning: "_MSC_VER" is not defined
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  Reporter:  Willem.deconinck@…          |       Owner:  neilgroves
      Type:  Bugs                        |      Status:  new       
 Milestone:  Boost 1.43.0                |   Component:  range     
   Version:  Boost 1.43.0                |    Severity:  Cosmetic  
Resolution:                              |    Keywords:            
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Comment (by mdorey@…):

 It's perhaps stating the obvious, but nonetheless worth doing so for the
 benefit of search engines, that this warning occurs with gcc when passed
 the -Wundef flag.  (This little-known and rarely-used flag is useful
 because it stops you from doing #if tests when the appropriate header file
 hasn't been included.)  Much of boost is clean in the presence of this
 flag and I've had other similar patches accepted in the past.  Another
 technique that's sometimes used to fix this sort of issue is
 BOOST_WORKAROUND, as demonstrated in eg
 https://svn.boost.org/trac/boost/ticket/1291.  I didn't choose that
 approach because I'm less familiar with it and I was concerned for
 consistency with the existing defined(_MSC_VER) test higher up this file.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/4353#comment:2>
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