--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/g++.dg/cpp0x/error4.C	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,22 @@
+// PR c++/49156
+// { dg-do compile { target c++11 } }
+
+template<typename T> T declval();
+
+template<typename T>
+struct S {
+
+  template<typename U>
+    static U get(const volatile T&);
+
+  template<typename U>
+    static decltype(*declval<U>()) get(...); // { dg-error "operator*" }
+
+  typedef decltype(get<T>(declval<T>())) type; // { dg-error "no match" }
+};
+
+struct X { };
+
+S<X>::type x;
+
+// { dg-prune-output "note" }