> On Jan 9, 2020, at 3:36 AM, Helmut Grohne wrote:
[…]
> Accordingly, we update all task handler functions to clear their
> corresponding TaskToken once they are run. A subsequent call to
> unscheduleDelayedTask will harmlessly unschedule the NULL token.
>
> Note that clearing a token after uns
When scheduling a delayed task, one receives a TaskToken. This token can
be used lateron for cancelling the task. Or the task could be run in the
interim and the token could be reissued for a different task. If the
task is unscheduled at this point, this consitutues a use-after-free
scenario. Accor
