Why the below piece of code is not crashing , though i have deleted the object?

Question

class object
{
  public:
    void check()
    {
      std::cout<<\"I am doing ok...\"<

        

Answer 1

Because what it actually looks like after the compiler has had its way, is something like this:

object::check( object* this )
{
     // do stuff without using this
}

int main()
{        
     object *p = new object;
     object::check( p );
     delete p;
     object::check( p );
     delete p;
     object::check( p );
 }

Since you're not touching "this", you don't actually access any bad memory.

Although, deleting p twice should be able to cause a crash:

http://www.parashift.com/c++-faq-lite/freestore-mgmt.html#faq-16.2