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diff --git a/boost/log/expressions/formatters/stream.hpp b/boost/log/expressions/formatters/stream.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   stream.hpp
+ * \author Andrey Semashev
+ * \date   24.07.2012
+ *
+ * The header contains implementation of a stream placeholder in template expressions.
+ */
+
+#ifndef BOOST_LOG_EXPRESSIONS_FORMATTERS_STREAM_HPP_INCLUDED_
+#define BOOST_LOG_EXPRESSIONS_FORMATTERS_STREAM_HPP_INCLUDED_
+
+#include <boost/phoenix/core/argument.hpp>
+#include <boost/log/detail/config.hpp>
+#include <boost/log/detail/header.hpp>
+
+#ifdef BOOST_HAS_PRAGMA_ONCE
+#pragma once
+#endif
+
+namespace boost {
+
+BOOST_LOG_OPEN_NAMESPACE
+
+namespace expressions {
+
+/*!
+ * Stream placeholder type in formatter template expressions.
+ */
+typedef phoenix::expression::argument< 2 >::type stream_type;
+
+/*!
+ * Stream placeholder in formatter template expressions.
+ */
+const stream_type stream = {};
+
+} // namespace expressions
+
+BOOST_LOG_CLOSE_NAMESPACE // namespace log
+
+} // namespace boost
+
+#include <boost/log/detail/footer.hpp>
+#if defined(BOOST_LOG_EXPRESSIONS_ATTR_HPP_INCLUDED_)
+#include <boost/log/detail/attr_output_impl.hpp>
+#endif
+
+#endif // BOOST_LOG_EXPRESSIONS_FORMATTERS_STREAM_HPP_INCLUDED_