[okular] [Bug 426698] Okular crashes starting with 2 differently orientated screens

[David Hurka]

https://bugs.kde.org/show_bug.cgi?id=426698

--- Comment #8 from David Hurka <david.hurka at mailbox.org> ---
Hmm. You successfully installed some Qt private debugging symbols, but Okular
debugging symbols still seem to be missing:

> #14 0x00007f7b70f4c38c in ?? () from /usr/lib64/qt5/plugins/okularpart.so
Here I expect that it shows us some PageView function names. (PageView is the
only place where we added QScroller.)

> #7  QScreen::size (this=this at entry=0x200000000) at kernel/qscreen.cpp:215
This looks somewhat interesting to me, like a nullptr with some additional
flag, which prevented it from being recognized as invalid pointer by
QScrollerPrivate::setDpiFromWidget(). But I can’t see where this could happen
in QWidget::screen().

Do you know how to use gdb? It will be complicated, but if Okular debugging
symbols don’t work, it could give us further hints about which QEvent is
involved.

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