Re: [Boost-bugs] [Boost C++ Libraries] #9240: boost 1.54.0 math/constants/constants.hpp doesn't compile with gcc 4.8 with c++11 if you undef __STRICT_ANSI__

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #9240: boost 1.54.0 math/constants/constants.hpp doesn't compile with gcc 4.8 with c++11 if you undef __STRICT_ANSI__
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-11-26 18:35:35

#9240: boost 1.54.0 math/constants/constants.hpp doesn't compile with gcc 4.8 with
c++11 if you undef __STRICT_ANSI__
-------------------------------+-------------------------
  Reporter:  richardg.work@…   |      Owner:  johnmaddock
      Type:  Bugs              |     Status:  new
 Milestone:  To Be Determined  |  Component:  math
   Version:  Boost 1.54.0      |   Severity:  Problem
Resolution:                    |   Keywords:
-------------------------------+-------------------------

Comment (by johnmaddock):

 >You could use GXX_EXPERIMENTAL_CXX0X, which gcc only defines when you use
 -std=c++11 (or -std=c++0x)

 No that doesn't work, {{{__float128}}} along with 128-bit literals are
 supported or not as follows:

 {{{
 -std=c++-03   Yes
 -std=gnu++-03 Yes
 -std=c++-11   No
 -std=gnu++-11 Yes
 }}}

 The last two both define {{{__GXX_EXPERIMENTAL_CXX0X__}}}, the only
 difference between them that I can see from using g++ -E -dM is
 {{{__STRICT_ANSI__}}}.  Indeed, GCC's own headers use
 {{{__STRICT_ANSI__}}} to differentiate between these two modes, so I still
 believe that what you're doing is basically a mistake.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/9240#comment:3>
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