[Boost-bugs] [Boost C++ Libraries] #1068: Mersenne twister disables streaming for Visual C++

Subject: [Boost-bugs] [Boost C++ Libraries] #1068: Mersenne twister disables streaming for Visual C++
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2007-06-27 19:52:05

#1068: Mersenne twister disables streaming for Visual C++
---------------------------------+------------------------------------------
 Reporter:  s.somani_at_[hidden]  |        Type:  Bugs            
   Status:  new                  |   Milestone:  To Be Determined
Component:  random               |     Version:                  
 Severity:  Problem              |    Keywords:                  
---------------------------------+------------------------------------------
 boost/mersenne_twister.hpp disables the streamable concept because boost
 config machinery says that vc 7.1/8 cannot handle member template friends.
 This appears not to be the case.

 To work around it, I do the following:

 // This hack is necessary because boost thinks that Visual C++ still
 // cannot handle member function templates
 // It is needed to make mersenne_twister streamable
 #include <boost/config.hpp>
 #if defined(BOOST_MSVC) && defined(BOOST_NO_MEMBER_TEMPLATE_FRIENDS)
 #  undef BOOST_NO_MEMBER_TEMPLATE_FRIENDS
 #  define FINCAD_BOOST_RNG_HACK
 #endif

 #include <boost/random/mersenne_twister.hpp>

 #ifdef FINCAD_BOOST_RNG_HACK
 #  define BOOST_NO_MEMBER_TEMPLATE_FRIENDS
 #  undef FINCAD_BOOST_RNG_HACK
 #endif

 I don't know how you would fix it for the twister. It really sounds like a
 config machinery issue but it affects the mersenne twister code
 negatively.

-- 
Ticket URL: <http://svn.boost.org/trac/boost/ticket/1068>
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