14. Huge problem discovered

• Unfortunately, there is a huge problem in our solution: the way it's written, the same memory may be deleted twice:

  
  int main()
  {
      Rectangle rect( "first", 333, 222 );
  
      Rectangle rect2 = rect; // this makes a "shallow" copy
  
      // this deletes memory imporperly "owned" by both objects
      rect2.set_name( "second" );
  
      //...
      return 0;
      // When destructor of rect is invoked, the memory that it
      // thinks it is managing is already deallocated!
      // depending on your circumstances, you may or not crash
      // here..
  }
  
  

  In a larger program that has a potential of using hundreds or even thousands of Rectangle struct instances in memory, the code will corrupt memory and mess up the C++ free store manager that allocates and deallocates our dynamic memory.