From 39fb05e40f9b1a767c7eacf41316aa342e3c1ef8 Mon Sep 17 00:00:00 2001
From: Nikita Kniazev <nok.raven@gmail.com>
Date: Sat, 23 Dec 2017 18:17:04 +0300
Subject: [PATCH] vector: Fix for compilers not compatible with CWG defect 945

http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#945
---
 include/boost/fusion/container/vector/vector.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/boost/fusion/container/vector/vector.hpp b/include/boost/fusion/container/vector/vector.hpp
index 1d6c5f1f..4993e2eb 100644
--- a/include/boost/fusion/container/vector/vector.hpp
+++ b/include/boost/fusion/container/vector/vector.hpp
@@ -247,14 +247,14 @@ namespace boost { namespace fusion
 
             template <typename J>
             BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
-            auto at_impl(J) -> decltype(at_detail<J::value>(this))
+            auto at_impl(J) -> decltype(at_detail<J::value>(&std::declval<vector_data&>()))
             {
                 return at_detail<J::value>(this);
             }
 
             template <typename J>
             BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
-            auto at_impl(J) const -> decltype(at_detail<J::value>(this))
+            auto at_impl(J) const -> decltype(at_detail<J::value>(&std::declval<vector_data const&>()))
             {
                 return at_detail<J::value>(this);
             }