1 files changed, 22 insertions, 1 deletions
diff --git a/boost/assign/std/set.hpp b/boost/assign/std/set.hpp
index e4d5ee2f86..0aefbee0ad 100644
--- a/boost/assign/std/set.hpp
+++ b/boost/assign/std/set.hpp
@@ -18,12 +18,16 @@
 
 #include <boost/assign/list_inserter.hpp>
 #include <boost/config.hpp>
+#include <boost/move/utility.hpp>
 #include <set>
 
 namespace boost
 {
 namespace assign
 {
+
+#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
+
     template< class K, class C, class A, class K2 >
     inline list_inserter< assign_detail::call_insert< std::set<K,C,A> >, K > 
     operator+=( std::set<K,C,A>& c, K2 k )
@@ -37,7 +41,24 @@ namespace assign
     {
         return insert( c )( k );
     }
-    
+
+#else
+
+    template< class K, class C, class A, class K2 >
+    inline list_inserter< assign_detail::call_insert< std::set<K, C, A> >, K >
+    operator+=(std::set<K, C, A>& c, K2&& k)
+    {
+        return insert(c)(boost::forward<K2>(k));
+    }
+
+    template< class K, class C, class A, class K2 >
+    inline list_inserter< assign_detail::call_insert< std::multiset<K, C, A> >, K >
+    operator+=(std::multiset<K, C, A>& c, K2&& k)
+    {
+        return insert(c)(boost::forward<K2>(k));
+    }
+
+#endif
 }
 }