operator-> shall be a non-static member function taking no parameters. It implements the class member access syntax that uses ->.
postfix-expression -> templateopt id-expression postfix-expression -> pseudo-destructor-name
An expression x->m is interpreted as (x.operator->())->m for a class object x of type T if T::operator->() exists and if the operator is selected as the best match function by the overload resolution mechanism ([over.match]).