From 3d0412bfd161c61c5c0c30ea4b11c962552fe2f1 Mon Sep 17 00:00:00 2001
From: Kohei Takahashi <flast@flast.jp>
Date: Sun, 31 May 2015 20:34:50 +0900
Subject: [PATCH] constexpr support for variadic list.

---
 .../fusion/container/generation/make_list.hpp      |  2 +-
 include/boost/fusion/container/list/list.hpp       | 14 +++++++-------
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/include/boost/fusion/container/generation/make_list.hpp b/include/boost/fusion/container/generation/make_list.hpp
index fbe93979..13eba30d 100644
--- a/include/boost/fusion/container/generation/make_list.hpp
+++ b/include/boost/fusion/container/generation/make_list.hpp
@@ -32,7 +32,7 @@ namespace boost { namespace fusion
     }
 
     template <typename ...T>
-    BOOST_FUSION_GPU_ENABLED
+    BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
     inline list<typename detail::as_fusion_element<T>::type...>
     make_list(T const&... arg)
     {
diff --git a/include/boost/fusion/container/list/list.hpp b/include/boost/fusion/container/list/list.hpp
index ebf8b03d..2ceea7be 100644
--- a/include/boost/fusion/container/list/list.hpp
+++ b/include/boost/fusion/container/list/list.hpp
@@ -37,7 +37,7 @@ namespace boost { namespace fusion
     public:
         typedef list_to_cons::type inherited_type;
 
-        BOOST_FUSION_GPU_ENABLED
+        BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
         list()
             : inherited_type() {}
 
@@ -47,7 +47,7 @@ namespace boost { namespace fusion
             : inherited_type(rhs) {}
 
         template <typename Sequence>
-        BOOST_FUSION_GPU_ENABLED
+        BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
         list&
         operator=(Sequence const& rhs)
         {
@@ -66,12 +66,12 @@ namespace boost { namespace fusion
     public:
         typedef typename list_to_cons::type inherited_type;
 
-        BOOST_FUSION_GPU_ENABLED
+        BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
         list()
             : inherited_type() {}
 
         template <typename ...U>
-        BOOST_FUSION_GPU_ENABLED
+        BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
         list(list<U...> const& rhs)
             : inherited_type(rhs) {}
 
@@ -80,13 +80,13 @@ namespace boost { namespace fusion
         list(Sequence const& rhs)
             : inherited_type(rhs) {}
 
-        BOOST_FUSION_GPU_ENABLED
+        BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
         explicit
         list(typename detail::call_param<T>::type ...args)
             : inherited_type(list_to_cons::call(args...)) {}
 
         template <typename ...U>
-        BOOST_FUSION_GPU_ENABLED
+        BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
         list&
         operator=(list<U...> const& rhs)
         {
@@ -95,7 +95,7 @@ namespace boost { namespace fusion
         }
 
         template <typename Sequence>
-        BOOST_FUSION_GPU_ENABLED
+        BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
         list&
         operator=(Sequence const& rhs)
         {