text: //////////////////////////////////////////////////////////////////////////////
  //
  // (C) Copyright Ion Gaztanaga 2014-2014. 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.
  //
  //////////////////////////////////////////////////////////////////////////////
  
  #ifndef BOOST_CONTAINER_DETAIL_STD_FWD_HPP
  #define BOOST_CONTAINER_DETAIL_STD_FWD_HPP
  
  #ifndef BOOST_CONFIG_HPP
  #  include <boost/config.hpp>
  #endif
  
  #if defined(BOOST_HAS_PRAGMA_ONCE)
  #  pragma once
  #endif
  
  //////////////////////////////////////////////////////////////////////////////
  //                        Standard predeclarations
  //////////////////////////////////////////////////////////////////////////////
  
  #if defined(__clang__) && defined(_LIBCPP_VERSION)
     #define BOOST_CONTAINER_CLANG_INLINE_STD_NS
     #pragma GCC diagnostic push
     #pragma GCC diagnostic ignored "-Wc++11-extensions"
     #define BOOST_CONTAINER_STD_NS_BEG _LIBCPP_BEGIN_NAMESPACE_STD
     #define BOOST_CONTAINER_STD_NS_END _LIBCPP_END_NAMESPACE_STD
  #elif defined(BOOST_GNU_STDLIB) && defined(_GLIBCXX_BEGIN_NAMESPACE_VERSION)  //GCC >= 4.6
     #define BOOST_CONTAINER_STD_NS_BEG namespace std _GLIBCXX_VISIBILITY(default) { _GLIBCXX_BEGIN_NAMESPACE_VERSION
     #define BOOST_CONTAINER_STD_NS_END _GLIBCXX_END_NAMESPACE_VERSION  } // namespace
  #elif defined(BOOST_GNU_STDLIB) && defined(_GLIBCXX_BEGIN_NAMESPACE)  //GCC >= 4.2
     #define BOOST_CONTAINER_STD_NS_BEG _GLIBCXX_BEGIN_NAMESPACE(std)
     #define BOOST_CONTAINER_STD_NS_END _GLIBCXX_END_NAMESPACE
  #else
     #define BOOST_CONTAINER_STD_NS_BEG namespace std{
     #define BOOST_CONTAINER_STD_NS_END }
  #endif
  
  BOOST_CONTAINER_STD_NS_BEG
  
  template<class T>
  class allocator;
  
  template<class T>
  struct less;
  
  template<class T1, class T2>
  struct pair;
  
  template<class T>
  struct char_traits;
  
  struct input_iterator_tag;
  struct forward_iterator_tag;
  struct bidirectional_iterator_tag;
  struct random_access_iterator_tag;
  
  template<class Container>
  class insert_iterator;
  
  struct allocator_arg_t;
  
  BOOST_CONTAINER_STD_NS_END
  
  #ifdef BOOST_CONTAINER_CLANG_INLINE_STD_NS
     #pragma GCC diagnostic pop
     #undef BOOST_CONTAINER_CLANG_INLINE_STD_NS
  #endif   //BOOST_CONTAINER_CLANG_INLINE_STD_NS
  
  #endif //#ifndef BOOST_CONTAINER_DETAIL_STD_FWD_HPP
  