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+// (C) Copyright Gennadiy Rozental 2012-2014.
+// 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/test for the library home page.
+//
+// File : $RCSfile$
+//
+// Version : $Revision$
+//
+// Description : defines the is_cstring type trait
+// ***************************************************************************
+
+#ifndef BOOST_TEST_UTILS_IS_CSTRING_HPP
+#define BOOST_TEST_UTILS_IS_CSTRING_HPP
+
+// Boost
+#include <boost/mpl/bool.hpp>
+#include <boost/type_traits/is_same.hpp>
+#include <boost/type_traits/decay.hpp>
+#include <boost/type_traits/remove_pointer.hpp>
+
+//____________________________________________________________________________//
+
+namespace boost {
+namespace unit_test {
+
+// ************************************************************************** //
+// ************** is_cstring ************** //
+// ************************************************************************** //
+
+namespace ut_detail {
+
+template<typename T>
+struct is_cstring_impl : public mpl::false_ {};
+
+template<typename T>
+struct is_cstring_impl<T const*> : public is_cstring_impl<T*> {};
+
+template<typename T>
+struct is_cstring_impl<T const* const> : public is_cstring_impl<T*> {};
+
+template<>
+struct is_cstring_impl<char*> : public mpl::true_ {};
+
+template<>
+struct is_cstring_impl<wchar_t*> : public mpl::true_ {};
+
+} // namespace ut_detail
+
+template<typename T>
+struct is_cstring : public ut_detail::is_cstring_impl<typename decay<T>::type> {};
+
+} // namespace unit_test
+} // namespace boost
+
+#endif // BOOST_TEST_UTILS_IS_CSTRING_HPP