@@ -0,0 +1,48 @@
+// PR middle-end/59737
+// { dg-do compile }
+// { dg-options "-O2" }
+
+struct A
+{
+ virtual void foo (int &x);
+ friend void
+ operator>> (int &x, A &y)
+ {
+ y.foo (x);
+ }
+};
+
+struct B : public A
+{
+ void foo (int &x);
+};
+
+struct F : public B
+{
+ void foo (int &x);
+};
+
+struct G : public F
+{
+ void foo (int &);
+};
+
+struct C : A
+{
+ void foo (int &);
+ struct H : public G
+ {
+ void foo (int &);
+ };
+ struct D : A
+ {
+ H d;
+ };
+};
+
+void
+C::foo (int &x)
+{
+ D a;
+ x >> a.d;
+}