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diff --git a/boost/type_traits/is_default_constructible.hpp b/boost/type_traits/is_default_constructible.hpp
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+++ b/boost/type_traits/is_default_constructible.hpp
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+
+//  (C) Copyright John Maddock 2015.
+//  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).
+//
+//  See http://www.boost.org/libs/type_traits for most recent version including documentation.
+
+#ifndef BOOST_TT_IS_DEFAULT_CONSTRUCTIBLE_HPP_INCLUDED
+#define BOOST_TT_IS_DEFAULT_CONSTRUCTIBLE_HPP_INCLUDED
+
+#include <boost/type_traits/integral_constant.hpp>
+#include <boost/detail/workaround.hpp>
+
+#if !defined(BOOST_NO_CXX11_DECLTYPE) && !BOOST_WORKAROUND(BOOST_MSVC, < 1800) && !BOOST_WORKAROUND(BOOST_GCC_VERSION, < 40500)
+
+#include <boost/type_traits/detail/yes_no_type.hpp>
+
+namespace boost{
+
+   namespace detail{
+
+      struct is_default_constructible_imp
+      {
+         template<typename _Tp, typename = decltype(_Tp())>
+         static boost::type_traits::yes_type test(int);
+
+         template<typename>
+         static boost::type_traits::no_type test(...);
+      };
+
+   }
+
+   template <class T> struct is_default_constructible : public integral_constant<bool, sizeof(detail::is_default_constructible_imp::test<T>(0)) == sizeof(boost::type_traits::yes_type)>{};
+   template <class T, std::size_t N> struct is_default_constructible<T[N]> : public is_default_constructible<T>{};
+   template <class T> struct is_default_constructible<T[]> : public is_default_constructible<T>{};
+   template <class T> struct is_default_constructible<T&> : public integral_constant<bool, false>{};
+#if !defined(BOOST_NO_CXX11_RVALUE_REFERENCES) 
+   template <class T> struct is_default_constructible<T&&> : public integral_constant<bool, false>{};
+#endif
+   template <> struct is_default_constructible<void> : public integral_constant<bool, false>{};
+   template <> struct is_default_constructible<void const> : public integral_constant<bool, false>{};
+   template <> struct is_default_constructible<void volatile> : public integral_constant<bool, false>{};
+   template <> struct is_default_constructible<void const volatile> : public integral_constant<bool, false>{};
+
+#else
+
+#include <boost/type_traits/is_pod.hpp>
+
+namespace boost{
+
+   // We don't know how to implement this, note we can not use has_trivial_constructor here
+   // because the correct implementation of that trait requires this one:
+   template <class T> struct is_default_constructible : public is_pod<T>{};
+   template <> struct is_default_constructible<void> : public integral_constant<bool, false>{};
+   template <> struct is_default_constructible<void const> : public integral_constant<bool, false>{};
+   template <> struct is_default_constructible<void volatile> : public integral_constant<bool, false>{};
+   template <> struct is_default_constructible<void const volatile> : public integral_constant<bool, false>{};
+
+#endif
+
+} // namespace boost
+
+#endif // BOOST_TT_IS_DEFAULT_CONSTRUCTIBLE_HPP_INCLUDED