re PR c++/67853 (decltype of parenthesized xvalue does not correctly yield rvalue-reference)

	PR c++/67853
	* g++.dg/cpp0x/decltype72.C: New test.

From-SVN: r273652

gcc/testsuite/ChangeLog

+2019-07-21  Marek Polacek  <polacek@redhat.com>
+
+	PR c++/67853
+	* g++.dg/cpp0x/decltype72.C: New test.
+
 2019-07-22  Stafford Horne  <shorne@gmail.com>
 
 	* gcc.target/or1k/ror-4.c: New file.

gcc/testsuite/g++.dg/cpp0x/decltype72.C

+// PR c++/67853
+// { dg-do compile { target c++11 } }
+
+template<typename T, typename U>
+struct is_same
+{
+  static const bool value = false;
+};
+
+template<typename T>
+struct is_same<T, T>
+{
+  static const bool value = true;
+};
+
+struct Member {};
+struct A { Member x; };
+A MakeA();
+static_assert(is_same<decltype((MakeA().x)), Member&&>::value, "");