--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/g++.dg/opt/pr82159-2.C	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,65 @@
+// PR c++/82159
+// { dg-do compile }
+// { dg-options "" }
+
+template <typename T> struct D { T e; };
+struct F : D<int[0]> {
+  F(const F &);
+};
+struct G : F {
+  template <class T> G operator-(T);
+};
+template <class T> struct I {
+  typedef typename T::template J<I> ak;
+};
+template <class T> struct K { typename I<T>::ak an; };
+struct H {
+  G l;
+};
+struct C {
+  ~C();
+};
+template <class T> struct M : T {
+  template <typename U, typename V> M(U, V);
+  H h;
+  virtual void foo() { T::bar(&h); }
+};
+template <int, typename> class A;
+template <class> struct B {
+  typedef int BT;
+  struct BC {};
+  template <class T> struct BD {
+    G g;
+    BD(BT, T n) : g(n.l - 0) {}
+  };
+  B(BT, BC);
+};
+template <typename> struct O;
+template <int T, typename U>
+struct O<B<A<T, U> > > : public B<A<T, U> >::BC {};
+struct L : B<A<2, double> > {
+  struct P : C {
+    void bar(H *x) {
+      BT a;
+      BD<H>(a, *x);
+    }
+  };
+  template <typename U, typename V> L(U x, V n) : B(x, n) {}
+  int ll;
+  virtual int baz() { M<P>(this, ll); }
+};
+template <typename> class Q {
+  O<B<A<2, double> > > q;
+  virtual L baz() { L(0, q); }
+};
+template <template <class> class T> struct R {
+  R() { T<int>(); }
+};
+struct S {
+  template <class> class J : R<Q> {};
+};
+void foo() { K<S> c; }
+
+int main() {
+  return 0;
+}