How to safely delete multiple pointers

Question

I have got some code which uses a lot of pointers pointing to the same address. Given a equivalent simple example:

int *p =  new int(1);
int *q = p;
int *r =         


        

Answer 1

Your tool is shared_ptr of the boost library. Take a look at the documentation: http://www.boost.org/doc/libs/1_44_0/libs/smart_ptr/shared_ptr.htm

Example:

void func() {
  boost::shared_ptr p(new int(10));
  boost::shared_ptr q(p);
  boost::shared_ptr r(q);

  // will be destructed correctly when they go out of scope.
}