Garbage collector and event handlers

Question

A quick question. Say that I have a class implemented as in below example.

class Subscriber
{
    private Publisher publisher = new Publisher;


    public S         


        

Answer 1

It wouldn't cause a leak - the GC can handle circular references with no problems.

However, it would mean that the publisher would effectively have a reference to the subscriber, so the subscriber couldn't be garbage collected until either the publisher is eligible for GC, or it unsubscribes from the event.