From abfaa1443ad79a9d0554fe57925c47710e784735 Mon Sep 17 00:00:00 2001
From: Daniel James <daniel@calamity.org.uk>
Date: Sun, 8 Apr 2018 14:47:24 +0100
Subject: [PATCH] Use type traits bool type in reference_content

---
 include/boost/detail/reference_content.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/boost/detail/reference_content.hpp b/include/boost/detail/reference_content.hpp
index 36b80d2..0dbcb4e 100644
--- a/include/boost/detail/reference_content.hpp
+++ b/include/boost/detail/reference_content.hpp
@@ -15,7 +15,7 @@
 
 #include "boost/config.hpp"
 
-#   include "boost/mpl/bool.hpp"
+#   include "boost/type_traits/integral_constant.hpp"
 #   include "boost/type_traits/has_nothrow_copy.hpp"
 
 #include "boost/mpl/void.hpp"
@@ -110,7 +110,7 @@ template <typename T>
 struct has_nothrow_copy<
       ::boost::detail::reference_content< T& >
     >
-    : mpl::true_
+    : boost::true_type
 {
 };