[BUG] hang in org-element-cache-map triggered by org-icalendar-export-to-ics

[BUG] hang in org-element-cache-map triggered by org-icalendar-export-to-ics

[Hanno Perrey]

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Dear all,

I have noticed a problem in =org-element-cache-map= that can be
triggered under specific circumstances through
=org-icalendar-export-to-ics= where the execution of the latter would
simply hang apparently indefinitely. This happens if

- =org-icalendar-store-UID= set to ='t=

- =org-icalendar-use-scheduled= set to = '(event-if-not-todo))=

- the buffer is narrowed to a tree with multiple sub-headings, each with
  a scheduled time

If =org-element-use-cache= is set to =nil= then the export succeeds
almost instantly.

I attach an org file with detailed steps for reproducing this on the
latest =main= using =make repro= on Emacs 28.1.90. I am a little stuck
debugging this further as I am not at all familiar with the inner
workings of Org's element cache. Any help or suggestions would be much
appreciated as I am using just this particular configuration quite
frequently when capturing new events and importing them into my calendar.


Thanks and cheers,

Hanno

--
Hanno Perrey
https://hoowl.se

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Re: [BUG] hang in org-element-cache-map triggered by org-icalendar-export-to-ics

[Ihor Radchenko]

Hanno Perrey <hanno@hoowl.se> writes:

> I have noticed a problem in =org-element-cache-map= that can be
> triggered under specific circumstances through
> =org-icalendar-export-to-ics= where the execution of the latter would
> simply hang apparently indefinitely. This happens if
>
> ...
> I attach an org file with detailed steps for reproducing this on the
> latest =main= using =make repro= on Emacs 28.1.90.

Thanks for reporting and for the clear reproducer!
Fixed, on bugfix.
https://git.savannah.gnu.org/cgit/emacs/org-mode.git/commit/?id=32b64607a

-- 
Ihor Radchenko // yantar92,
Org mode contributor,
Learn more about Org mode at <https://orgmode.org/>.
Support Org development at <https://liberapay.com/org-mode>,
or support my work at <https://liberapay.com/yantar92>