#include <iostream>
 
class X 
{ 
public:
  X() : private_(1) { /*...*/ }
 
private: 
  int Value() { return private_; }
  int private_; 
};
 
// Nasty attempt to simulate the object layout
// (cross your fingers and toes).
//
class BaitAndSwitch
    // hopefully has the same data layout as X
{   // so we can pass him off as one
public:
  int Value() { return private_; }
private:
  int private_;
};
 
int f( X& x )
{
  // evil laughter here
  (reinterpret_cast<BaitAndSwitch&>(x)).Value();
}
 
int main()
{
    X x;
    std::cout << f(x) << "\n"; // prints 0, not 1
    return 0;
};

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