1 files changed, 19 insertions, 0 deletions
diff --git a/boost/fusion/support/deduce.hpp b/boost/fusion/support/deduce.hpp
index 8d53115ffc..b75381c5b3 100644
--- a/boost/fusion/support/deduce.hpp
+++ b/boost/fusion/support/deduce.hpp
@@ -12,6 +12,10 @@
 #include <boost/fusion/support/config.hpp>
 #include <boost/ref.hpp>
 
+#ifndef BOOST_NO_CXX11_HDR_FUNCTIONAL
+#include <functional>
+#endif
+
 namespace boost { namespace fusion { namespace traits
 {
     template <typename T> struct deduce;
@@ -86,6 +90,21 @@ namespace boost { namespace fusion { namespace traits
         typedef T& type;
     };
 
+    // Also unwrap C++11 std::ref if available (referencee cv is deduced)
+#ifndef BOOST_NO_CXX11_HDR_FUNCTIONAL
+    template <typename T>
+    struct deduce<std::reference_wrapper<T> &>
+    {
+        typedef T& type;
+    };
+
+    template <typename T>
+    struct deduce<std::reference_wrapper<T> const &>
+    {
+        typedef T& type;
+    };
+#endif
+
     // Keep references on arrays, even if const
 
     template <typename T, int N>