Re: [Boost-bugs] [Boost C++ Libraries] #7094: warning: unrecognized #pragma GCC system_header

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #7094: warning: unrecognized #pragma GCC system_header
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-07-10 16:13:18

#7094: warning: unrecognized #pragma GCC system_header
---------------------------------+------------------------------------------
  Reporter:  1czajnik@…          |       Owner:  emildotchevski
      Type:  Bugs                |      Status:  closed        
 Milestone:  To Be Determined    |   Component:  exception     
   Version:  Boost 1.50.0        |    Severity:  Problem       
Resolution:  fixed               |    Keywords:                
---------------------------------+------------------------------------------

Comment (by 1czajnik@…):

 Replying to [comment:4 1czajnik@…]:
 > Thanks for fixing this, Emil. I took a look at 79398, and I think this
 should work for my compiler. But one thing came to my mind: what about
 compilers, that don't define {{{__GNUC__}}} at all?
 >
 > I mean, don't we need some additional guards like:
 > {{{
 > #if defined(__GNUC__) && defined(__GNUC_MINOR__) && \
 >     (__GNUC__*100+__GNUC_MINOR__>301) && \
 >     !defined(BOOST_EXCEPTION_ENABLE_WARNINGS)
 > }}}
 False alarm, I just checked in MinGW, that something like:
 {{{
 #if (asdf*100+ghjk > 5)
 #error
 #endif
 }}}
 compiles fine without asdf or ghjk defined. I didn't know the preprocessor
 was supposed to work like this ;-)
 Cheers

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/7094#comment:5>
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