33 struct Derived : public Base {  struct
34   Derived();
35   Derived(const Derived &);
36   Derived(Derived &&);
37   Derived &operator=(const Derived &);
38   Derived &operator=(Derived &&);
41 Derived::Derived() {}  in Derived()  function in Derived
42 Derived::Derived(const Derived &d) : Base(d) {}  in Derived()  function in Derived
43 Derived::Derived(Derived &&d) : Base(static_cast<Base&&>(d)) {}  in Derived()  function in Derived
44 Derived& Derived::operator=(const Derived &d) {  in operator =()
48 Derived& Derived::operator=(Derived &&d) {  in operator =()