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diff --git a/boost/log/detail/attr_output_impl.hpp b/boost/log/detail/attr_output_impl.hpp
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+/*
+ *          Copyright Andrey Semashev 2007 - 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)
+ */
+/*!
+ * \file   attr_output_impl.hpp
+ * \author Andrey Semashev
+ * \date   12.08.2012
+ *
+ * \brief  This header is the Boost.Log library implementation, see the library documentation
+ *         at http://www.boost.org/doc/libs/release/libs/log/doc/html/index.html.
+ */
+
+#ifndef BOOST_LOG_DETAIL_ATTR_OUTPUT_IMPL_HPP_INCLUDED_
+#define BOOST_LOG_DETAIL_ATTR_OUTPUT_IMPL_HPP_INCLUDED_
+
+#include <boost/mpl/is_sequence.hpp>
+#include <boost/phoenix/core/actor.hpp>
+#include <boost/log/detail/config.hpp>
+#include <boost/log/expressions/attr.hpp>
+#include <boost/log/utility/functional/bind_to_log.hpp>
+#include <boost/log/detail/attr_output_terminal.hpp>
+#include <boost/log/detail/header.hpp>
+
+#ifdef BOOST_HAS_PRAGMA_ONCE
+#pragma once
+#endif
+
+namespace boost {
+
+BOOST_LOG_OPEN_NAMESPACE
+
+namespace expressions {
+
+namespace aux {
+
+template< typename LeftT, typename T, typename FallbackPolicyT, typename TagT >
+struct make_output_expression
+{
+    //! Resulting expression
+    typedef attribute_output_terminal< LeftT, T, FallbackPolicyT, to_log_fun< TagT > > type;
+
+    //! Creates the output expression
+    template< typename RightT >
+    static BOOST_FORCEINLINE type make(LeftT const& left, RightT const& right)
+    {
+        return type(left, right.get_name(), to_log_fun< TagT >(), right.get_fallback_policy());
+    }
+};
+
+template< typename LeftT, typename RightT, typename ValueT = typename RightT::value_type, bool IsSequenceV = mpl::is_sequence< ValueT >::value >
+struct make_output_actor;
+
+template< template< typename > class ActorT, typename LeftExprT, typename RightT, typename ValueT >
+struct make_output_actor< ActorT< LeftExprT >, RightT, ValueT, false >
+{
+    typedef make_output_expression<
+        ActorT< LeftExprT >,
+        ValueT,
+        typename RightT::fallback_policy,
+        typename RightT::tag_type
+    > make_expression;
+
+    typedef ActorT< typename make_expression::type > type;
+
+    static BOOST_FORCEINLINE type make(ActorT< LeftExprT > const& left, RightT const& right)
+    {
+        type res = {{ make_expression::make(left, right) }};
+        return res;
+    }
+};
+
+template< template< typename > class ActorT, typename LeftExprT, typename RightT, typename ValueT >
+struct make_output_actor< ActorT< LeftExprT >, RightT, ValueT, true >
+{
+    typedef attribute_output_terminal< ActorT< LeftExprT >, ValueT, typename RightT::fallback_policy, to_log_fun< typename RightT::tag_type > > expression_type;
+
+    typedef ActorT< expression_type > type;
+
+    static BOOST_FORCEINLINE type make(ActorT< LeftExprT > const& left, RightT const& right)
+    {
+        type res = {{ expression_type(left, right.get_name(), to_log_fun< typename RightT::tag_type >(), right.get_fallback_policy()) }};
+        return res;
+    }
+};
+
+} // namespace aux
+
+#define BOOST_LOG_AUX_OVERLOAD(left_ref, right_ref)\
+    template< typename LeftExprT, typename T, typename FallbackPolicyT, typename TagT >\
+    BOOST_FORCEINLINE typename aux::make_output_actor< phoenix::actor< LeftExprT >, attribute_actor< T, FallbackPolicyT, TagT, phoenix::actor > >::type\
+    operator<< (phoenix::actor< LeftExprT > left_ref left, attribute_actor< T, FallbackPolicyT, TagT, phoenix::actor > right_ref right)\
+    {\
+        return aux::make_output_actor< phoenix::actor< LeftExprT >, attribute_actor< T, FallbackPolicyT, TagT, phoenix::actor > >::make(left, right);\
+    }
+
+#include <boost/log/detail/generate_overloads.hpp>
+
+#undef BOOST_LOG_AUX_OVERLOAD
+
+} // namespace expressions
+
+BOOST_LOG_CLOSE_NAMESPACE // namespace log
+
+} // namespace boost
+
+#include <boost/log/detail/footer.hpp>
+
+#endif // BOOST_LOG_DETAIL_ATTR_OUTPUT_IMPL_HPP_INCLUDED_