From 80875a19b6e5fb58f65be98ce708db31966175ee Mon Sep 17 00:00:00 2001
From: Glen Fernandes <glen.fernandes@gmail.com>
Date: Sun, 30 Apr 2017 21:56:10 -0400
Subject: [PATCH] Reduce detection conditions for constexpr addressof

---
 include/boost/core/addressof.hpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/include/boost/core/addressof.hpp b/include/boost/core/addressof.hpp
index efde98a..b73ea56 100644
--- a/include/boost/core/addressof.hpp
+++ b/include/boost/core/addressof.hpp
@@ -117,7 +117,6 @@ struct address_of<const volatile addressof_null_t> {
 } /* detail */
 
 #if defined(BOOST_NO_CXX11_SFINAE_EXPR) || \
-    defined(BOOST_NO_CXX11_RVALUE_REFERENCES) || \
     defined(BOOST_NO_CXX11_CONSTEXPR) || \
     defined(BOOST_NO_CXX11_DECLTYPE)
 #define BOOST_CORE_NO_CONSTEXPR_ADDRESSOF
@@ -171,7 +170,7 @@ const T (*addressof(const T (&o)[N]) BOOST_NOEXCEPT)[N]
 namespace detail {
 
 template<class T>
-T&& addressof_declval() BOOST_NOEXCEPT;
+T addressof_declval() BOOST_NOEXCEPT;
 
 template<class>
 struct addressof_void {