Can a C++ class determine whether it's on the stack or heap?

Question

I have

class Foo {
....
}

Is there a way for Foo to be able to separate out:

function blah() {
  Foo foo; // on the stack
         


        

Answer 1

I am not positive what you are asking, but overriding the new operator may be what you are trying to do. As the only safe way to create an object on the heap in C++ is to use the new operator, you can differentiate between objects that exist on the heap versus other forms of memory. Google "overloading new in c++" for more information.

You should, however, consider if differentiating between the two types of memory is really necessary from inside the class. Having an object behave differently depending upon where it is stored sounds like a recipe for disaster if you are not careful!