text: //////////////////////////////////////////////////////////////////////////////
  //
  // (C) Copyright Ion Gaztanaga 2015-2015. Distributed under the Boost
  // Software License, Version 1.0. (See accompanying file
  // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  //
  // See http://www.boost.org/libs/container for documentation.
  //
  //////////////////////////////////////////////////////////////////////////////
  
  #include <boost/container/flat_map.hpp>
  
  struct empty
  {
     friend bool operator == (const empty &, const empty &){ return true; }
     friend bool operator <  (const empty &, const empty &){ return true; }
  };
  
  template class ::boost::container::flat_map<empty, empty>;
  template class ::boost::container::flat_multimap<empty, empty>;
  
  int main()
  {
     ::boost::container::flat_map<empty, empty> dummy;
     ::boost::container::flat_multimap<empty, empty> dummy2;
     (void)dummy; (void)dummy2;
     return 0;
  }
  