From 0c1f015c1a9db13950a60958771905c505974ed6 Mon Sep 17 00:00:00 2001
From: Daniel James <daniel@calamity.org.uk>
Date: Fri, 7 Dec 2007 01:12:02 +0000
Subject: [PATCH] Merge from trunk, finally.

[SVN r41817]
---
 include/boost/fusion/support/deduce.hpp | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/include/boost/fusion/support/deduce.hpp b/include/boost/fusion/support/deduce.hpp
index 846fbc4d..37710ec1 100644
--- a/include/boost/fusion/support/deduce.hpp
+++ b/include/boost/fusion/support/deduce.hpp
@@ -25,6 +25,24 @@ namespace boost { namespace fusion { namespace traits
         typedef T type; 
     };
 
+    template <typename T>
+    struct deduce<T const>
+    {
+        typedef T type;
+    };
+
+    template <typename T>
+    struct deduce<T volatile>
+    {
+        typedef T type;
+    };
+
+    template <typename T>
+    struct deduce<T const volatile>
+    {
+        typedef T type;
+    };
+
     // Keep references on mutable LValues
 
     template <typename T>