gc_ptr: (not) smart pointer using boehm gc

gc_ptr.hpp

#ifndef GC_PTR_HPP_
#define GC_PTR_HPP_

class gc_cleanup;

template <typename T>
class gc_ptr : public gc_cleanup
{
    T *ptr;
    const P<T> &operator =(T *);

public:
    P(T *t) : ptr(t) {}
    operator T *() { return ptr; }
    T *operator ->() { return ptr; }
    ~P() { delete ptr; }
};

#endif