So I've been reading about shared_ptr/weak_ptr implementation and I do not get a small detail. As far as I understand, there is a class ControlBlock defined in the private section of shared_ptr. But weak_ptr also stores a pointer to some ControlBlock instance. In my implementation should I befriend weak_ptr inside shared_ptr or define ControlBlock outside shared_ptr as a struct?
ControlBlock member of weak_ptr
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