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diff --git a/boost/move/detail/move_helpers.hpp b/boost/move/detail/move_helpers.hpp
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+++ b/boost/move/detail/move_helpers.hpp
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+//////////////////////////////////////////////////////////////////////////////
+//
+// (C) Copyright Ion Gaztanaga 2010-2012.
+// 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/move for documentation.
+//
+//////////////////////////////////////////////////////////////////////////////
+
+#ifndef BOOST_MOVE_MOVE_HELPERS_HPP
+#define BOOST_MOVE_MOVE_HELPERS_HPP
+
+#include <boost/move/utility_core.hpp>
+#include <boost/move/detail/meta_utils.hpp>
+
+#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+
+#define BOOST_MOVE_CATCH_CONST(U)  \
+   typename ::boost::move_detail::if_< ::boost::move_detail::is_class_or_union<U>, BOOST_CATCH_CONST_RLVALUE(U), const U &>::type
+#define BOOST_MOVE_CATCH_RVALUE(U)\
+   typename ::boost::move_detail::if_< ::boost::move_detail::is_class_or_union<U>, BOOST_RV_REF(U), ::boost::move_detail::nat>::type
+#define BOOST_MOVE_CATCH_FWD(U) BOOST_FWD_REF(U)
+#else
+#define BOOST_MOVE_CATCH_CONST(U)  const U &
+#define BOOST_MOVE_CATCH_RVALUE(U) U &&
+#define BOOST_MOVE_CATCH_FWD(U)    U &&
+#endif
+
+#ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
+#define BOOST_MOVE_CONVERSION_AWARE_CATCH(PUB_FUNCTION, TYPE, RETURN_VALUE, FWD_FUNCTION)\
+   RETURN_VALUE PUB_FUNCTION(BOOST_MOVE_CATCH_CONST(TYPE) x)\
+   {  return FWD_FUNCTION(static_cast<const TYPE&>(x)); }\
+\
+   RETURN_VALUE PUB_FUNCTION(BOOST_MOVE_CATCH_RVALUE(TYPE) x) \
+   {  return FWD_FUNCTION(::boost::move(x));  }\
+\
+   RETURN_VALUE PUB_FUNCTION(TYPE &x)\
+   {  return FWD_FUNCTION(const_cast<const TYPE &>(x)); }\
+\
+   template<class BOOST_MOVE_TEMPL_PARAM>\
+   typename ::boost::move_detail::enable_if_c\
+                     <  ::boost::move_detail::is_class_or_union<TYPE>::value &&\
+                        ::boost::move_detail::is_same<TYPE, BOOST_MOVE_TEMPL_PARAM>::value &&\
+                       !::boost::has_move_emulation_enabled<BOOST_MOVE_TEMPL_PARAM>::value\
+                     , RETURN_VALUE >::type\
+   PUB_FUNCTION(const BOOST_MOVE_TEMPL_PARAM &u)\
+   { return FWD_FUNCTION(u); }\
+\
+   template<class BOOST_MOVE_TEMPL_PARAM>\
+   typename ::boost::move_detail::enable_if_c\
+                     < (!::boost::move_detail::is_class_or_union<BOOST_MOVE_TEMPL_PARAM>::value || \
+                        !::boost::move_detail::is_rv<BOOST_MOVE_TEMPL_PARAM>::value) && \
+                        !::boost::move_detail::is_same<TYPE, BOOST_MOVE_TEMPL_PARAM>::value \
+                     , RETURN_VALUE >::type\
+   PUB_FUNCTION(const BOOST_MOVE_TEMPL_PARAM &u)\
+   {\
+      TYPE t(u);\
+      return FWD_FUNCTION(::boost::move(t));\
+   }\
+//
+
+#elif (defined(_MSC_VER) && (_MSC_VER == 1600))
+
+#define BOOST_MOVE_CONVERSION_AWARE_CATCH(PUB_FUNCTION, TYPE, RETURN_VALUE, FWD_FUNCTION)\
+   RETURN_VALUE PUB_FUNCTION(BOOST_MOVE_CATCH_CONST(TYPE) x)\
+   {  return FWD_FUNCTION(static_cast<const TYPE&>(x)); }\
+\
+   RETURN_VALUE PUB_FUNCTION(BOOST_MOVE_CATCH_RVALUE(TYPE) x) \
+   {  return FWD_FUNCTION(::boost::move(x));  }\
+\
+   template<class BOOST_MOVE_TEMPL_PARAM>\
+   typename ::boost::move_detail::enable_if_c\
+                     < !::boost::move_detail::is_same<TYPE, BOOST_MOVE_TEMPL_PARAM>::value\
+                     , RETURN_VALUE >::type\
+   PUB_FUNCTION(const BOOST_MOVE_TEMPL_PARAM &u)\
+   {\
+      TYPE t(u);\
+      return FWD_FUNCTION(::boost::move(t));\
+   }\
+//
+
+#else
+
+#define BOOST_MOVE_CONVERSION_AWARE_CATCH(PUB_FUNCTION, TYPE, RETURN_VALUE, FWD_FUNCTION)\
+   RETURN_VALUE PUB_FUNCTION(BOOST_MOVE_CATCH_CONST(TYPE) x)\
+   {  return FWD_FUNCTION(static_cast<const TYPE&>(x)); }\
+\
+   RETURN_VALUE PUB_FUNCTION(BOOST_MOVE_CATCH_RVALUE(TYPE) x) \
+   {  return FWD_FUNCTION(::boost::move(x));  }\
+//
+
+#endif
+
+
+#ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
+
+#define BOOST_MOVE_CONVERSION_AWARE_CATCH_1ARG(PUB_FUNCTION, TYPE, RETURN_VALUE, FWD_FUNCTION, ARG1, UNLESS_CONVERTIBLE_TO)\
+   RETURN_VALUE PUB_FUNCTION(ARG1 arg1, BOOST_MOVE_CATCH_CONST(TYPE) x)\
+   {  return FWD_FUNCTION(arg1, static_cast<const TYPE&>(x)); }\
+\
+   RETURN_VALUE PUB_FUNCTION(ARG1 arg1, BOOST_MOVE_CATCH_RVALUE(TYPE) x) \
+   {  return FWD_FUNCTION(arg1, ::boost::move(x));  }\
+\
+   RETURN_VALUE PUB_FUNCTION(ARG1 arg1, TYPE &x)\
+   {  return FWD_FUNCTION(arg1, const_cast<const TYPE &>(x)); }\
+\
+   template<class BOOST_MOVE_TEMPL_PARAM>\
+   typename ::boost::move_detail::enable_if_c<\
+                        ::boost::move_detail::is_same<TYPE, BOOST_MOVE_TEMPL_PARAM>::value &&\
+                       !::boost::has_move_emulation_enabled<BOOST_MOVE_TEMPL_PARAM>::value\
+                     , RETURN_VALUE >::type\
+   PUB_FUNCTION(ARG1 arg1, const BOOST_MOVE_TEMPL_PARAM &u)\
+   { return FWD_FUNCTION(arg1, u); }\
+\
+   template<class BOOST_MOVE_TEMPL_PARAM>\
+   typename ::boost::move_detail::enable_if_c<\
+                       !::boost::move_detail::is_rv<BOOST_MOVE_TEMPL_PARAM>::value && \
+                       !::boost::move_detail::is_same<TYPE, BOOST_MOVE_TEMPL_PARAM>::value && \
+                       !::boost::move_detail::is_convertible<BOOST_MOVE_TEMPL_PARAM, UNLESS_CONVERTIBLE_TO>::value \
+                     , RETURN_VALUE >::type\
+   PUB_FUNCTION(ARG1 arg1, const BOOST_MOVE_TEMPL_PARAM &u)\
+   {\
+      TYPE t(u);\
+      return FWD_FUNCTION(arg1, ::boost::move(t));\
+   }\
+//
+
+#elif (defined(_MSC_VER) && (_MSC_VER == 1600))
+
+#define BOOST_MOVE_CONVERSION_AWARE_CATCH_1ARG(PUB_FUNCTION, TYPE, RETURN_VALUE, FWD_FUNCTION, ARG1, UNLESS_CONVERTIBLE_TO)\
+   RETURN_VALUE PUB_FUNCTION(ARG1 arg1, BOOST_MOVE_CATCH_CONST(TYPE) x)\
+   {  return FWD_FUNCTION(arg1, static_cast<const TYPE&>(x)); }\
+\
+   RETURN_VALUE PUB_FUNCTION(ARG1 arg1, BOOST_MOVE_CATCH_RVALUE(TYPE) x) \
+   {  return FWD_FUNCTION(arg1, ::boost::move(x));  }\
+\
+   template<class BOOST_MOVE_TEMPL_PARAM>\
+   typename ::boost::move_detail::enable_if_c\
+                     < !::boost::move_detail::is_same<TYPE, BOOST_MOVE_TEMPL_PARAM>::value && \
+                       !::boost::move_detail::is_convertible<BOOST_MOVE_TEMPL_PARAM, UNLESS_CONVERTIBLE_TO>::value \
+                     , RETURN_VALUE >::type\
+   PUB_FUNCTION(ARG1 arg1, const BOOST_MOVE_TEMPL_PARAM &u)\
+   {\
+      TYPE t(u);\
+      return FWD_FUNCTION(arg1, ::boost::move(t));\
+   }\
+//
+
+#else
+
+#define BOOST_MOVE_CONVERSION_AWARE_CATCH_1ARG(PUB_FUNCTION, TYPE, RETURN_VALUE, FWD_FUNCTION, ARG1, UNLESS_CONVERTIBLE_TO)\
+   RETURN_VALUE PUB_FUNCTION(ARG1 arg1, BOOST_MOVE_CATCH_CONST(TYPE) x)\
+   {  return FWD_FUNCTION(arg1, static_cast<const TYPE&>(x)); }\
+\
+   RETURN_VALUE PUB_FUNCTION(ARG1 arg1, BOOST_MOVE_CATCH_RVALUE(TYPE) x) \
+   {  return FWD_FUNCTION(arg1, ::boost::move(x));  }\
+//
+
+#endif
+
+#endif //#ifndef BOOST_MOVE_MOVE_HELPERS_HPP