1 files changed, 24 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/cpp0x/enum37.C b/gcc/testsuite/g++.dg/cpp0x/enum37.C
new file mode 100644
index 00000000000..6aa3d4015d7
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/enum37.C
@@ -0,0 +1,24 @@
+// PR c++/89024
+// { dg-do compile { target c++11 } }
+
+template <class T, class U> struct same;
+template <class T> struct same<T,T> {};
+
+template<class T> T&& declval();
+
+template<typename _To1>
+void __test_aux(_To1);
+
+template<typename _From1, typename _To1,
+        typename = decltype(__test_aux<_To1>(declval<_From1>()))>
+char __test(int);
+
+template<typename, typename>
+int __test(...);
+
+enum E {
+    x = decltype(__test<E, int>(0))(0)
+};
+
+same<E,decltype(x)> s;
+same<unsigned int,__underlying_type(E)> s2;