Delete addressof for temporaries (LWG 2598)

	* include/bits/move.h (addressof(const _Tp&&)): Add deleted overload,
	as per LWG 2598.

From-SVN: r242375

libstdc++-v3/ChangeLog

 2016-11-14  Jonathan Wakely  <jwakely@redhat.com>
 
+	* include/bits/move.h (addressof(const _Tp&&)): Add deleted overload,
+	as per LWG 2598.
+
 	* include/std/future (future::share(), future<R&>::share())
 	(future<void>::share()): Add noexcept, as per LWG 2556.
 

libstdc++-v3/include/bits/move.h

@@ -137,6 +137,11 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     addressof(_Tp& __r) noexcept
     { return std::__addressof(__r); }
 
+  // _GLIBCXX_RESOLVE_LIB_DEFECTS
+  // 2598. addressof works on temporaries
+  template<typename _Tp>
+    const _Tp* addressof(const _Tp&&) = delete;
+
   // C++11 version of std::exchange for internal use.
   template <typename _Tp, typename _Up = _Tp>
     inline _Tp