From 74c0d5d0ecd0c9d8a31b9a642432a5171d005df3 Mon Sep 17 00:00:00 2001
From: Charly Chevalier <charly.chevalier@numscale.com>
Date: Tue, 10 Nov 2015 10:55:13 +0100
Subject: [PATCH] Fix fusion::at<vector<...>, N> for C array types

---
 include/boost/fusion/container/vector/detail/value_at_impl.hpp | 2 +-
 include/boost/fusion/container/vector/vector.hpp               | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/boost/fusion/container/vector/detail/value_at_impl.hpp b/include/boost/fusion/container/vector/detail/value_at_impl.hpp
index 3d748afd..7d134054 100644
--- a/include/boost/fusion/container/vector/detail/value_at_impl.hpp
+++ b/include/boost/fusion/container/vector/detail/value_at_impl.hpp
@@ -47,7 +47,7 @@ namespace boost { namespace fusion
             struct apply
             {
                 typedef typename boost::remove_cv<Sequence>::type seq;
-                typedef decltype(seq::template value_at_impl<N::value>(boost::declval<seq*>())) type;
+                typedef typename decltype(seq::template value_at_impl<N::value>(boost::declval<seq*>()))::type type;
             };
         };
     }
diff --git a/include/boost/fusion/container/vector/vector.hpp b/include/boost/fusion/container/vector/vector.hpp
index fb6a6f8b..845a019e 100644
--- a/include/boost/fusion/container/vector/vector.hpp
+++ b/include/boost/fusion/container/vector/vector.hpp
@@ -272,7 +272,7 @@ namespace boost { namespace fusion
 
             template <std::size_t N, typename U>
             static BOOST_FUSION_GPU_ENABLED
-            U value_at_impl(store<N, U>*);
+            mpl::identity<U> value_at_impl(store<N, U>*);
         };
 
         template <typename V, typename... T>