I don't understand why SetFinalizer+resurrected could prevent a memory block which will be collected from being collected. Update: never mind, I re-read the do

I don't understand why SetFinalizer+resurrected could prevent a memory block which will be collected from being collected. Update: never mind, I re-read the docs of SetFinalizer to get the explanation: SetFinalizer sets the finalizer associated with obj to the provided finalizer function. When the garbage collector finds an unreachable block with an associated finalizer, it clears the association and runs finalizer(obj) in a separate goroutine. This makes obj reachable again, but now without an associated finalizer. Assuming that SetFinalizer is not called again, the next time the garbage collector sees that obj is unreachable, it will free obj.