--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/g++.dg/template/friend19.C	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,28 @@
+// { dg-do compile }
+
+// Origin: Benjamin Li <benxbli@yahoo.com>
+
+// PR c++/11030: Template substitution of friend class that is
+// a specialization.
+
+template <int S>
+struct A
+{
+  void func(void);
+};
+
+template <class T>
+class C
+{
+  static void private_func(void) {}
+public:
+  friend class A<512>;
+};
+
+template <int S>
+void A<S>::func(void)
+{
+  C<void>::private_func();
+}
+
+template class A<512>;