1 files changed, 52 insertions, 0 deletions
diff --git a/boost/type_traits/make_void.hpp b/boost/type_traits/make_void.hpp
new file mode 100644
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+++ b/boost/type_traits/make_void.hpp
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+/*
+Copyright 2017 Glen Joseph Fernandes
+<glenjofe -at- gmail.com>
+
+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 BOOST_TT_MAKE_VOID_HPP_INCLUDED
+#define BOOST_TT_MAKE_VOID_HPP_INCLUDED
+
+#include <boost/config.hpp>
+
+namespace boost {
+
+#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES)
+template<class...>
+struct make_void {
+    typedef void type;
+};
+
+#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
+template<class... Ts>
+using void_t = typename make_void<Ts...>::type;
+#endif
+
+#else /* BOOST_NO_CXX11_VARIADIC_TEMPLATES */
+
+template<class = void,
+         class = void,
+         class = void,
+         class = void,
+         class = void>
+struct make_void {
+    typedef void type;
+};
+
+#if !defined(BOOST_NO_CXX11_TEMPLATE_ALIASES)
+template<class A = void,
+         class B = void,
+         class C = void,
+         class D = void,
+         class E = void>
+using void_t = typename make_void<A, B, C, D, E>::type;
+#endif
+
+#endif
+
+} /* boost */
+
+#endif