Re: Template inner class problem

template<typename T> class Stack {
  struct Link {
    T* data;
    Link* next;
    Link(T* dat, Link* nxt)
      : data(dat), next(nxt) {}
  }* head;
public:
  Stack() : head(0) {}
  ~Stack();
  void push(T* dat) {
    head = new Link(dat, head);
  }
  T* peek() const {
    return head ? head->data : 0;
  }
  T* pop();
  // Nested iterator class:
  class iterator; // Declaration required
  friend class iterator; // Make it a friend
  class iterator { // Now define it

    Stack::Link* p;

/* Compile error int above line
compiled with: g++ -fpermissive -c TStack2Test.cpp
error: type ???Stack<T>??? is not derived from type ???Stack<T>::iterator???
error: expected ???;??? before ???*??? token

*/