Re: [Boost-bugs] [Boost C++ Libraries] #10686: Boost.Preprocessor VARIADICS and VARIADICS_MSVC defined incorrectly under MSVC12

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #10686: Boost.Preprocessor VARIADICS and VARIADICS_MSVC defined incorrectly under MSVC12
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-11-04 14:53:09

#10686: Boost.Preprocessor VARIADICS and VARIADICS_MSVC defined incorrectly under
MSVC12
-------------------------------+---------------------------
  Reporter:  iFreilicht        |      Owner:  no-maintainer
      Type:  Bugs              |     Status:  new
 Milestone:  To Be Determined  |  Component:  preprocessor
   Version:  Boost 1.54.0      |   Severity:  Problem
Resolution:                    |   Keywords:
-------------------------------+---------------------------

Comment (by iFreilicht):

 That is correct, it is not documented.

 I'm sorry, I'm only talking about VisualStudio 2013 and VC++ 2013. From my
 knowledge it has the version number 12, that's why I called it that.

 I have made a minimal case and it seems like `__EDG__` is only defined
 under the IntelliSense compiler for what ever reason.

 {{{
 #if __EDG__
 #error __EDG__ is defined
 #endif
 }}}

 This code will throw no error upon compilation, but IntelliSense shows it
 as getting reached and `__EDG__` as being defined. Thus, compilation
 behaviour is not touched by this bug.

 Also, after taking a closer look at preprocessor/config.hpp, there seems
 to be awareness for this.

 In lines 34-39, it is first checked if `__EDG__` is defined and then
 `_MSC_VER`. If they both are, the MSVC config flags are set as the result
 of `BOOST_PP_CONFIG_FLAGS`.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/10686#comment:3>
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