getPtr() delivers different pointer than the one used with getOrPut() (BUG?)

[fdik]

Is there sample code for having a HashMap, which maps to struct instances on the Heap?

If T is the type of your struct, then instead of an integer use T* (the pointer to your struct) as data type. There is a three part article on Hash Maps that talks about concurrency in the last part.

This solves this problem, too.