enable_shared_from_this - empty internal weak pointer?

Question

I\'m using enable_shared_from_this and then inherit from Base. When trying to use shared_from_this() in Derived

Answer 1

You cannot call shared_from_this() in the object's constructor. shared_from_this() requires that the object is owned by at least one shared_ptr. An object cannot be owned by a shared_ptr before it is constructed.

I would guess that the internal weak pointer is set when a shared_ptr takes ownership of the object for the first time. Before that point, there is no reference count struct that the weak pointer can reference.