smart pointer overload confusion

smart-pointer-overload.cpp

#include <iostream>

class Obj;

class Wrapper {
  Obj* ptr;
public:
  Wrapper(Obj* aptr) : ptr(aptr) {}

  Obj& operator*() {
    return *ptr;
  }

  operator const Obj*() {
    return ptr;
  }
};

class Obj {};

void func(bool abool) {
  std::cout << "bool\n";
}

void func(Obj* obj) {
  std::cout << "obj\n";
}

int main() {
  // calls the obj variant
  func(new Obj());

  // calls the bool variant
  func(Wrapper(new Obj()));

  // calls the obj variant
  func(&*Wrapper(new Obj()));
  return 0;
}