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diff --git a/boost/spirit/home/x3/support/traits/value_traits.hpp b/boost/spirit/home/x3/support/traits/value_traits.hpp
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+++ b/boost/spirit/home/x3/support/traits/value_traits.hpp
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+/*=============================================================================
+    Copyright (c) 2001-2014 Joel de Guzman
+    Copyright (c) 2001-2011 Hartmut Kaiser
+    http://spirit.sourceforge.net/
+
+    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)
+=============================================================================*/
+#if !defined(BOOST_SPIRIT_X3_VALUE_TRAITS_MAY_07_2013_0203PM)
+#define BOOST_SPIRIT_X3_VALUE_TRAITS_MAY_07_2013_0203PM
+
+#if defined(_MSC_VER)
+#pragma once
+#endif
+
+#include <boost/utility/value_init.hpp>
+
+namespace boost { namespace spirit { namespace x3 { namespace traits
+{
+    template <typename T, typename Enable = void>
+    struct value_initialize
+    {
+        static T call()
+        {
+            return boost::value_initialized<T>();
+        }
+    };
+}}}}
+
+#endif