From fab3df0a04f6b84f0c1c3f9bc6ebbfc803dd9614 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ion=20Gazta=C3=B1aga?= <igaztanaga@gmail.com>
Date: Sun, 3 Aug 2014 11:09:54 +0200
Subject: [PATCH] Added emplace optimization specializations for compilers with
 rvalue references but without variadic templates (e.g. MSVC10&11)

---
 .../container/detail/advanced_insert_int.hpp  | 38 ++++++++++++++++++-
 1 file changed, 36 insertions(+), 2 deletions(-)

diff --git a/include/boost/container/detail/advanced_insert_int.hpp b/include/boost/container/detail/advanced_insert_int.hpp
index 4d00d7a..1296659 100644
--- a/include/boost/container/detail/advanced_insert_int.hpp
+++ b/include/boost/container/detail/advanced_insert_int.hpp
@@ -386,6 +386,8 @@ struct BOOST_PP_CAT(insert_emplace_proxy_arg, N)
 #define BOOST_PP_LOCAL_LIMITS (0, BOOST_CONTAINER_MAX_CONSTRUCTOR_PARAMETERS)
 #include BOOST_PP_LOCAL_ITERATE()
 
+#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+
 //Specializations to avoid an unneeded temporary when emplacing from a single argument o type value_type
 template<class A, class Iterator>
 struct insert_emplace_proxy_arg1<A, Iterator, ::boost::rv<typename boost::container::allocator_traits<A>::value_type> >
@@ -404,7 +406,37 @@ struct insert_emplace_proxy_arg1<A, Iterator, typename boost::container::allocat
    : insert_copy_proxy<A, Iterator>(v)
    {}
 };
-/*
+
+#else //e.g. MSVC10 & MSVC11
+
+//Specializations to avoid an unneeded temporary when emplacing from a single argument o type value_type
+template<class A, class Iterator>
+struct insert_emplace_proxy_arg1<A, Iterator, typename boost::container::allocator_traits<A>::value_type>
+   : public insert_move_proxy<A, Iterator>
+{
+   explicit insert_emplace_proxy_arg1(typename boost::container::allocator_traits<A>::value_type &&v)
+   : insert_move_proxy<A, Iterator>(v)
+   {}
+};
+
+template<class A, class Iterator>
+struct insert_emplace_proxy_arg1<A, Iterator, typename boost::container::allocator_traits<A>::value_type &>
+   : public insert_copy_proxy<A, Iterator>
+{
+   explicit insert_emplace_proxy_arg1(const typename boost::container::allocator_traits<A>::value_type &v)
+   : insert_copy_proxy<A, Iterator>(v)
+   {}
+};
+
+template<class A, class Iterator>
+struct insert_emplace_proxy_arg1<A, Iterator, const typename boost::container::allocator_traits<A>::value_type &>
+   : public insert_copy_proxy<A, Iterator>
+{
+   explicit insert_emplace_proxy_arg1(const typename boost::container::allocator_traits<A>::value_type &v)
+   : insert_copy_proxy<A, Iterator>(v)
+   {}
+};
+
 template<class A, class Iterator>
 struct insert_emplace_proxy_arg1<A, Iterator, const typename boost::container::allocator_traits<A>::value_type>
    : public insert_copy_proxy<A, Iterator>
@@ -413,7 +445,9 @@ struct insert_emplace_proxy_arg1<A, Iterator, const typename boost::container::a
    : insert_copy_proxy<A, Iterator>(v)
    {}
 };
-*/
+
+#endif
+
 }}}   //namespace boost { namespace container { namespace container_detail {
 
 #endif   //#ifdef BOOST_CONTAINER_PERFECT_FORWARDING