c++: Add new test [PR88819]

Fixed by r10-1975-g59febe0e.

2020-02-12  Marek Polacek  <polacek@redhat.com>

	PR c++/88819
	* g++.dg/cpp2a/nontype-class32.C: New test.

gcc/testsuite/ChangeLog

 2020-02-12  Marek Polacek  <polacek@redhat.com>
 
+	PR c++/88819
+	* g++.dg/cpp2a/nontype-class32.C: New test.
+
+2020-02-12  Marek Polacek  <polacek@redhat.com>
+
 	PR c++/93684 - ICE-on-invalid with broken attribute.
 	* g++.dg/parse/attr4.C: New test.
 

gcc/testsuite/g++.dg/cpp2a/nontype-class32.C

+// PR c++/88819
+// { dg-do compile { target c++2a } }
+
+template<typename T, template<T> class TT, class R = TT <0>> struct A 
+{
+  template<R> struct B {};
+};
+template<int> struct C {};
+
+A<int, C, C<0>> a;