Can pointers to values inside associative arrays become invalid?

[Idan Arye via Digitalmars-d-learn]

I have an associative array, and I use the `in` operator to get a 
reference to a value inside it and store it in a pointer:

    int[string] aa;
    aa["myKey"] = 42;
    int* myPointer = "myKey" in aa;
Is it possible that due to rehashing or something D will decide 
to move the associative array's values around, resulting in 
`myPointer` no longer pointing to `aa["myKey"]`?