re PR c++/54318 ([C++11] Bogus "template instantiation depth exceeds maximum" error + segfault)

2013-05-03  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/54318
	* g++.dg/cpp0x/pr54318.C: New.

From-SVN: r198573

gcc/testsuite/ChangeLog

 2013-05-03  Paolo Carlini  <paolo.carlini@oracle.com>
 
+	PR c++/54318
+	* g++.dg/cpp0x/pr54318.C: New.
+
+2013-05-03  Paolo Carlini  <paolo.carlini@oracle.com>
+
 	PR c++/14283
 	* g++.dg/parse/error51.C: New.
 	* g++.dg/parse/error15.C: Adjust column numbers.

gcc/testsuite/g++.dg/cpp0x/pr54318.C

+// PR c++/54318
+// { dg-do compile { target c++11 } }
+
+template <typename T>
+struct wrapped
+{
+  typedef T type;
+};
+
+template <typename T>
+typename T::type unwrap1(T);
+
+int unwrap(int);
+
+template <typename T>
+auto unwrap(T t) -> decltype(unwrap(unwrap1(t)))
+{
+  return unwrap(unwrap1(t));
+}
+
+int main()
+{
+  unwrap(wrapped<wrapped<int>>());
+}