re PR c++/64574 (ICE (stack overflow SEGV) with bad template specialization)

2017-03-06  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/64574
	* g++.dg/template/crash125.C: New.

From-SVN: r245916

gcc/testsuite/ChangeLog

+2017-03-06  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/64574
+	* g++.dg/template/crash125.C: New.
+
 2017-03-06  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/79812

gcc/testsuite/g++.dg/template/crash125.C

+// PR c++/64574
+
+template<class T>
+class TraitCheckImpl;
+
+template<class T, class>
+class Swappable;
+template<class T, class=typename TraitCheckImpl<Swappable<T, void> >::Complete>
+class Swappable;
+
+template<class T>
+struct TraitCheckImpl<Swappable<T> > {
+    typedef void Complete;
+};
+
+Swappable<int> s;  // { dg-error "depth" }
+
+// { dg-prune-output "compilation terminated" }