Jeff Davis <pgsql(at)j-davis(dot)com> writes:
> The bug is pretty simple: ProcessIncomingNotify() is called in a tight
> loop in EnableNotifyInterrupt() while notifyInterruptOccurred is true.
> EnableNotifyInterrupt() is assuming that ProcessIncomingNotify() will
> unset it, but it has an early return that's triggered by my UNLISTEN.
> Simply adding an additional "notifyInterruptOccurred = 0" in the early
> return path (patch attached) seems to work. I added it there rather than
> moving the whole line up, because I wasn't sure if it's safe to do that
> before DisableCatchupInterrupt().
Hm. AFAICS just moving the flag reset up to the top is safe, and the
cleanest way to fix it.
regards, tom lane
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