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diff --git a/3rdParty/Boost/src/boost/variant/detail/apply_visitor_unary.hpp b/3rdParty/Boost/src/boost/variant/detail/apply_visitor_unary.hpp
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+++ b/3rdParty/Boost/src/boost/variant/detail/apply_visitor_unary.hpp
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+//-----------------------------------------------------------------------------
+// boost variant/detail/apply_visitor_unary.hpp header file
+// See http://www.boost.org for updates, documentation, and revision history.
+//-----------------------------------------------------------------------------
+//
+// Copyright (c) 2002-2003
+// Eric Friedman
+//
+// 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_VARIANT_DETAIL_APPLY_VISITOR_UNARY_HPP
+#define BOOST_VARIANT_DETAIL_APPLY_VISITOR_UNARY_HPP
+
+#include "boost/config.hpp"
+#include "boost/detail/workaround.hpp"
+#include "boost/variant/detail/generic_result_type.hpp"
+
+#include "boost/utility/enable_if.hpp"
+
+namespace boost {
+
+//////////////////////////////////////////////////////////////////////////
+// function template apply_visitor(visitor, visitable)
+//
+// Visits visitable with visitor.
+//
+
+//
+// nonconst-visitor version:
+//
+
+#if !BOOST_WORKAROUND(__EDG__, BOOST_TESTED_AT(302))
+
+#   define BOOST_VARIANT_AUX_APPLY_VISITOR_NON_CONST_RESULT_TYPE(V) \
+    BOOST_VARIANT_AUX_GENERIC_RESULT_TYPE(typename V::result_type) \
+    /**/
+
+#else // EDG-based compilers
+
+#   define BOOST_VARIANT_AUX_APPLY_VISITOR_NON_CONST_RESULT_TYPE(V) \
+    typename enable_if< \
+          mpl::not_< is_const< V > > \
+        , BOOST_VARIANT_AUX_GENERIC_RESULT_TYPE(typename V::result_type) \
+        >::type \
+    /**/
+
+#endif // EDG-based compilers workaround
+
+template <typename Visitor, typename Visitable>
+inline
+    BOOST_VARIANT_AUX_APPLY_VISITOR_NON_CONST_RESULT_TYPE(Visitor)
+apply_visitor(Visitor& visitor, Visitable& visitable)
+{
+    return visitable.apply_visitor(visitor);
+}
+
+#undef BOOST_VARIANT_AUX_APPLY_VISITOR_NON_CONST_RESULT_TYPE
+
+//
+// const-visitor version:
+//
+
+#if !BOOST_WORKAROUND(BOOST_MSVC, <= 1300)
+
+template <typename Visitor, typename Visitable>
+inline
+    BOOST_VARIANT_AUX_GENERIC_RESULT_TYPE(typename Visitor::result_type)
+apply_visitor(const Visitor& visitor, Visitable& visitable)
+{
+    return visitable.apply_visitor(visitor);
+}
+
+#endif // MSVC7 and below exclusion
+
+} // namespace boost
+
+#endif // BOOST_VARIANT_DETAIL_APPLY_VISITOR_UNARY_HPP