[Boost-bugs] [Boost C++ Libraries] #4584: recursive_variant_ fails with VC++ 2010's map

Subject: [Boost-bugs] [Boost C++ Libraries] #4584: recursive_variant_ fails with VC++ 2010's map
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2010-08-22 08:29:09

#4584: recursive_variant_ fails with VC++ 2010's map
---------------------------------------------+------------------------------
 Reporter:  Cory Nelson <phrosty@…>          |       Owner:  ebf    
     Type:  Bugs                             |      Status:  new    
Milestone:  To Be Determined                 |   Component:  variant
  Version:  Boost 1.44.0                     |    Severity:  Problem
 Keywords:                                   |  
---------------------------------------------+------------------------------
 Code like this:

 make_recursive_variant<int, std::map<int, recursive_variant_>>::type

 Fails on VC++ because the map is instantiated which in turn instantiates
 std::pair<int, recursive_variant_>.  pair does not work with the
 incomplete type recursive_variant_.

 Simple workaround is to change variant_fwd.hpp:

 struct recursive_variant_;

 to:

 struct recursive_variant_ {};

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/4584>
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