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+// Copyright David Abrahams 2002.
+// 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)
+#ifndef VOID_RETURN_DWA200274_HPP
+# define VOID_RETURN_DWA200274_HPP
+
+# include <boost/config.hpp>
+
+namespace boost { namespace python { namespace detail { 
+
+struct void_return
+{
+    void_return() {}
+ private: 
+    void operator=(void_return const&);
+};
+
+template <class T>
+struct returnable
+{
+    typedef T type;
+};
+
+# ifdef BOOST_NO_VOID_RETURNS
+template <>
+struct returnable<void>
+{
+    typedef void_return type;
+};
+
+#  ifndef BOOST_NO_CV_VOID_SPECIALIZATIONS
+template <> struct returnable<const void> : returnable<void> {};
+template <> struct returnable<volatile void> : returnable<void> {};
+template <> struct returnable<const volatile void> : returnable<void> {};
+#  endif
+
+# endif // BOOST_NO_VOID_RETURNS
+
+}}} // namespace boost::python::detail
+
+#endif // VOID_RETURN_DWA200274_HPP