3 files changed, 56 insertions, 4 deletions
diff --git a/boost/type_traits/detail/common_arithmetic_type.hpp b/boost/type_traits/detail/common_arithmetic_type.hpp
index 8c091583c5..a7aff03929 100644
--- a/boost/type_traits/detail/common_arithmetic_type.hpp
+++ b/boost/type_traits/detail/common_arithmetic_type.hpp
@@ -46,7 +46,7 @@ template<> struct arithmetic_type<3>
 #endif
 
 // There are five standard signed integer types:
-// “signed char”, “short int”, “int”, “long int”, and “long long int”.
+// "signed char", "short int", "int", "long int", and "long long int".
 
 template<> struct arithmetic_type<4>
 {
@@ -79,8 +79,8 @@ template<> struct arithmetic_type<8>
 };
 
 // For each of the standard signed integer types, there exists a corresponding
-// (but different) standard unsigned integer type: “unsigned char”, “unsigned short int”,
-// “unsigned int”, “unsigned long int”, and “unsigned long long int”
+// (but different) standard unsigned integer type: "unsigned char", "unsigned short int",
+// "unsigned int", "unsigned long int", and "unsigned long long int"
 
 template<> struct arithmetic_type<9>
 {
diff --git a/boost/type_traits/is_rvalue_reference.hpp b/boost/type_traits/is_rvalue_reference.hpp
index 50e88edee0..a48edb5140 100644
--- a/boost/type_traits/is_rvalue_reference.hpp
+++ b/boost/type_traits/is_rvalue_reference.hpp
@@ -1,5 +1,5 @@
 
-//  (C) John Maddock 2010. 
+//  (C) Copyright John Maddock 2010. 
 //  Use, modification and distribution are subject to 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).
diff --git a/boost/type_traits/make_void.hpp b/boost/type_traits/make_void.hpp
new file mode 100644
index 0000000000..f48823b059
--- /dev/null
+++ b/boost/type_traits/make_void.hpp
@@ -0,0 +1,52 @@
+/*
+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