Updated boost to v1.55.0

[rsem.git] / boost / fusion / support / sequence_base.hpp

diff --git a/boost/fusion/support/sequence_base.hpp b/boost/fusion/support/sequence_base.hpp
index 1d436ef165f111b103ba253742672028d3f06200..89affab666703839c178dd92495bc9c05c3ac4a3 100644 (file)
--- a/boost/fusion/support/sequence_base.hpp
+++ b/boost/fusion/support/sequence_base.hpp
@@ -1,5 +1,5 @@
 /*=============================================================================
-    Copyright (c) 2001-2006 Joel de Guzman
+    Copyright (c) 2001-2011 Joel de Guzman
     Copyright (c) 2007 Tobias Schwinger
 
     Distributed under the Boost Software License, Version 1.0. (See accompanying
@@ -12,10 +12,14 @@
 
 namespace boost { namespace fusion
 {
-    struct sequence_root {};
+    namespace detail
+    {
+        struct from_sequence_convertible_type
+        {};
+    }
 
     template <typename Sequence>
-    struct sequence_base : sequence_root
+    struct sequence_base
     {
         Sequence const&
         derived() const
@@ -28,6 +32,11 @@ namespace boost { namespace fusion
         {
             return static_cast<Sequence&>(*this);
         }
+
+        operator detail::from_sequence_convertible_type()const
+        {
+            return detail::from_sequence_convertible_type();
+        }
     };
 
     struct fusion_sequence_tag;