re PR c++/87571 (ICE in friend_accessible_p, accessing protected member of…

re PR c++/87571 (ICE in friend_accessible_p, accessing protected member of template friend inside template class)

2019-03-11  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/87571
	* g++.dg/template/memfriend18.C: New.

From-SVN: r269575

gcc/testsuite/ChangeLog

+2019-03-11  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR c++/87571
+	* g++.dg/template/memfriend18.C: New.
+
 2019-03-10  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 
 	* gdc.dg/pr89041.d: Mark as compile test.

gcc/testsuite/g++.dg/template/memfriend18.C

+// PR c++/87571
+
+template <class> struct A {
+  template <class> struct B {
+    template <class> friend class B;
+  protected:
+    int protected_member_;
+  public:
+    template <class T> int method(const B<T>& other) const {
+      return other.protected_member_;
+    }
+  };
+};
+
+int main() {
+  A<int>::B<int> a;
+  A<int>::B<char> b;
+  a.method(b);
+}