[korganizer] [Bug 384075] korganizer crashes when selecting a calendar to be shown in agenda/day/week/month view (regression 17.08.*)

[Denis Kurz]

https://bugs.kde.org/show_bug.cgi?id=384075

Denis Kurz <kdenis at posteo.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
            Version|5.6.0                       |5.7.1
                 CC|                            |kdenis at posteo.de
             Status|UNCONFIRMED                 |CONFIRMED

--- Comment #10 from Denis Kurz <kdenis at posteo.de> ---
I saw this crash, too (in 17.12.1, I think). KOrganizer (or Kontact -> Tasks or
Kontact -> Calendar) always crashed on startup when my CalDAV resource was
selected. The crashing stopped when I found two TODO items in that resource
with the same UID, and deleted one of them. This might also be the reason why
pushing all items to a new calendar via Thunderbird solves the problem,
assuming that Thunderbird detects those duplicate UIDs and generates new ones
ore ignores one of the offending items.

Can anyone who still encounters this problem please check if there are
duplicate-UID TODO items in their calendar resource, and if deleting one of
them does the trick?

While duplicate UIDs would be a bug in the DAV resource (according to the
qCWarning in incidencetreemodel.cpp:350), the IncidenceTreeModel should still
be able to cope with them gracefully. I made a patch for the latter, but still
need some more testing before submitting it.

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