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diff --git a/boost/log/sinks/debug_output_backend.hpp b/boost/log/sinks/debug_output_backend.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   debug_output_backend.hpp
+ * \author Andrey Semashev
+ * \date   07.11.2008
+ *
+ * The header contains a logging sink backend that outputs log records to the debugger.
+ */
+
+#ifndef BOOST_LOG_SINKS_DEBUG_OUTPUT_BACKEND_HPP_INCLUDED_
+#define BOOST_LOG_SINKS_DEBUG_OUTPUT_BACKEND_HPP_INCLUDED_
+
+#include <string>
+#include <boost/log/detail/config.hpp>
+
+#ifdef BOOST_HAS_PRAGMA_ONCE
+#pragma once
+#endif
+
+#ifndef BOOST_LOG_WITHOUT_DEBUG_OUTPUT
+
+#include <boost/log/sinks/basic_sink_backend.hpp>
+#include <boost/log/sinks/frontend_requirements.hpp>
+#include <boost/log/attributes/attribute_value_set.hpp>
+#include <boost/log/core/record_view.hpp>
+#include <boost/log/detail/header.hpp>
+
+namespace boost {
+
+BOOST_LOG_OPEN_NAMESPACE
+
+namespace sinks {
+
+/*!
+ * \brief An implementation of a logging sink backend that outputs to the debugger
+ *
+ * The sink uses Windows API in order to write log records as debug messages, if the
+ * application process is run under debugger. The sink backend also provides a specific
+ * filter that allows to check whether the debugger is available and thus elide unnecessary
+ * formatting.
+ */
+template< typename CharT >
+class basic_debug_output_backend :
+    public basic_formatted_sink_backend< CharT, concurrent_feeding >
+{
+    //! Base type
+    typedef basic_formatted_sink_backend< CharT, concurrent_feeding > base_type;
+
+public:
+    //! Character type
+    typedef typename base_type::char_type char_type;
+    //! String type to be used as a message text holder
+    typedef typename base_type::string_type string_type;
+
+public:
+    /*!
+     * Constructor. Initializes the sink backend.
+     */
+    BOOST_LOG_API basic_debug_output_backend();
+    /*!
+     * Destructor
+     */
+    BOOST_LOG_API ~basic_debug_output_backend();
+
+    /*!
+     * The method passes the formatted message to debugger
+     */
+    BOOST_LOG_API void consume(record_view const& rec, string_type const& formatted_message);
+};
+
+#ifdef BOOST_LOG_USE_CHAR
+typedef basic_debug_output_backend< char > debug_output_backend;      //!< Convenience typedef for narrow-character logging
+#endif
+#ifdef BOOST_LOG_USE_WCHAR_T
+typedef basic_debug_output_backend< wchar_t > wdebug_output_backend;  //!< Convenience typedef for wide-character logging
+#endif
+
+} // namespace sinks
+
+BOOST_LOG_CLOSE_NAMESPACE // namespace log
+
+} // namespace boost
+
+#include <boost/log/detail/footer.hpp>
+
+#endif // BOOST_LOG_WITHOUT_DEBUG_OUTPUT
+
+#endif // BOOST_LOG_SINKS_DEBUG_OUTPUT_BACKEND_HPP_INCLUDED_