Does destroying and recreating an object make all pointers to this object invalid?

Question

This is a follow-up to this question. Suppose I have this code:

class Class {
    public virtual method()
    {
        this->~Class();
        new( this          


        

Answer 1

This is explicitly approved in 3.8:7:

3.8 Object lifetime [basic.life]

7 - If, after the lifetime of an object has ended [...], a new object is created at the storage location which the original object occupied, a pointer that pointed to the original object [...] can be used to manipulate the new object, if: (various requirements which are satisfied in this case)

The example given is:

struct C {
  int i;
  void f();
  const C& operator=( const C& );
};
const C& C::operator=( const C& other) {
  if ( this != &other ) {
    this->~C(); // lifetime of *this ends
    new (this) C(other); // new object of type C created
    f(); // well-defined
  }
  return *this;
}