https://bugs.kde.org/show_bug.cgi?id=474907

--- Comment #2 from furioness <zver201...@ya.ru> ---
(In reply to Nate Graham from comment #1)
> You can use debuginfod to download the debug symbols for an existing
> backtrace. See
> https://community.kde.org/Guidelines_and_HOWTOs/Debugging/
> How_to_create_useful_crash_reports#Retrieving_a_backtrace_using_coredumpctl.
> Can you please follow the instructions there and paste a symbolicated
> backtrace? Thanks!

It took me a while as I ruined a bit my package manager while adding debug
repositories :D
I'm kind of a noob, so be patient with me, please.
Seems like libQt5Core.so.5 debug symbols are of different versions. I hope this
will be enough.

```
#0  0x0000563f751261ff in KWin::Xwl::Dnd::handleClientMessage
(this=0x7effc0001830, event=0x563f78535b10) at
/usr/src/debug/kwin/kwin-5.27.8/src/xwayland/dnd.cpp:123
123             if (drag->handleClientMessage(event)) {
[Current thread is 1 (Thread 0x7effead83640 (LWP 1487))]
(gdb) bt
#0  0x0000563f751261ff in
KWin::Xwl::Dnd::handleClientMessage(xcb_client_message_event_t*)
(this=0x7effc0001830, event=0x563f78535b10)
    at /usr/src/debug/kwin/kwin-5.27.8/src/xwayland/dnd.cpp:123
#1  0x0000563f75129a1c in non-virtual thunk to
KWin::Xwl::DataBridge::nativeEventFilter(QByteArray const&, void*, long*) () at
/usr/src/debug/kwin/kwin-5.27.8/src/xwayland/databridge.h:55
#2  0x00007efff0897fbf in
QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*)
    (this=<optimized out>, eventType=..., message=message@entry=0x563f78535b10,
result=result@entry=0x7ffef0d8d3c8) at kernel/qabstracteventdispatcher.cpp:495
#3  0x0000563f7513d331 in
KWin::Xwl::Xwayland::dispatchEvents(KWin::Xwl::Xwayland::DispatchEventsMode)
(this=<optimized out>, mode=<optimized out>)
    at /usr/include/qt/QtCore/qbytearray.h:463
#4  0x00007efff08d0b37 in QtPrivate::QSlotObjectBase::call(QObject*, void**)
    (a=0x7ffef0d8d510, r=<optimized out>, this=0x563f7805f640, this=<optimized
out>, r=<optimized out>, a=<optimized out>)
    at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#5  doActivate<false>(QObject*, int, void**) (sender=0x563f7805fda0,
signal_index=3, argv=0x7ffef0d8d510) at kernel/qobject.cpp:3925
#6  0x00007efff08d2334 in QSocketNotifier::activated(QSocketDescriptor,
QSocketNotifier::Type, QSocketNotifier::QPrivateSignal)
    (this=this@entry=0x563f7805fda0, _t1=..., _t2=<optimized out>, _t3=...) at
.moc/moc_qsocketnotifier.cpp:178
#7  0x00007efff08d2478 in QSocketNotifier::event(QEvent*) (this=0x563f7805fda0,
e=<optimized out>) at kernel/qsocketnotifier.cpp:302
#8  0x00007effeff7893f in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib/libQt5Widgets.so.5
#9  0x00007efff089bbf8 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
(receiver=0x563f7805fda0, event=0x7ffef0d8d630) at
kernel/qcoreapplication.cpp:1064
#10 0x00007efff08e95dc in
QEventDispatcherUNIXPrivate::activateSocketNotifiers()
(this=this@entry=0x563f76e9b470) at kernel/qeventdispatcher_unix.cpp:304
#11 0x00007efff08ea7a9 in
QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=<optimized out>, flags=...) at kernel/qeventdispatcher_unix.cpp:511
#12 0x0000563f752089b2 in
QUnixEventDispatcherQPA::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
()
#13 0x00007efff089a904 in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7ffef0d8d7c0, flags=..., flags@entry=...)
    at ../../include/QtCore/../../src/corelib/global/qflags.h:69
#14 0x00007efff089bda3 in QCoreApplication::exec() () at
../../include/QtCore/../../src/corelib/global/qflags.h:121
#15 0x0000563f751242fb in main(int, char**) (argc=<optimized out>,
argv=<optimized out>) at
/usr/src/debug/kwin/kwin-5.27.8/src/main_wayland.cpp:628
```

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