https://bugs.kde.org/show_bug.cgi?id=485999
--- Comment #5 from Mike Lothian ---
I spoke too soon, if you scoll those two files then close kdiff3 you get the
following segfault:
Process 560661 stopped
* thread #1, name = 'kdiff3', stop reason = signal SIGSEGV: address not mapped
to object (fault address: 0x88)
frame #0: 0x74606190
libQt6WaylandClient.so.6`QtWaylandClient::QWaylandShmBackingStore::resize(QSize
const&) + 848
libQt6WaylandClient.so.6`QtWaylandClient::QWaylandShmBackingStore::resize:
-> 0x74606190 <+848>: cmpb $0x0, 0x88(%rcx)
0x74606197 <+855>: je 0x746061f0 ; <+944>
0x74606199 <+857>: cmpq $0x0, 0x80(%rcx)
0x746061a1 <+865>: je 0x746061f0 ; <+944>
(lldb) bt
* thread #1, name = 'kdiff3', stop reason = signal SIGSEGV: address not mapped
to object (fault address: 0x88)
* frame #0: 0x74606190
libQt6WaylandClient.so.6`QtWaylandClient::QWaylandShmBackingStore::resize(QSize
const&) + 848
frame #1: 0x74605ce2
libQt6WaylandClient.so.6`QtWaylandClient::QWaylandShmBackingStore::beginPaint(QRegion
const&) + 82
frame #2: 0x76790361
libQt6Gui.so.6`QBackingStore::beginPaint(QRegion const&) + 433
frame #3: 0x776e4ee2
libQt6Widgets.so.6`QWidgetRepaintManager::paintAndFlush() + 4514
frame #4: 0x776c90bc
libQt6Widgets.so.6`QWidgetRepaintManager::sync() + 284
frame #5: 0x776be70f libQt6Widgets.so.6`QWidget::event(QEvent*) +
2671
frame #6: 0x77546412 libQt6Widgets.so.6`QMainWindow::event(QEvent*)
+ 962
frame #7: 0x77ecdde2 libKF6XmlGui.so.6`KMainWindow::event(QEvent*)
+ 4530
frame #8: 0x77f0f4fb
libKF6XmlGui.so.6`KXmlGuiWindow::event(QEvent*) + 43
frame #9: 0x7769061e
libQt6Widgets.so.6`QApplicationPrivate::notify_helper(QObject*, QEvent*) + 302
frame #10: 0x776920ae
libQt6Widgets.so.6`QApplication::notify(QObject*, QEvent*) + 494
frame #11: 0x76133f57
libQt6Core.so.6`QCoreApplication::notifyInternal2(QObject*, QEvent*) + 183
frame #12: 0x776e2b07
libQt6Widgets.so.6`QWidgetRepaintManager::sendUpdateRequest(QWidget*,
QWidgetRepaintManager::UpdateTime) + 743
frame #13: 0x777373b7 libQt6Widgets.so.6`void
QWidgetRepaintManager::markDirty(QRect const&, QWidget*,
QWidgetRepaintManager::UpdateTime, QWidgetRepaintManager::BufferState) + 1447
frame #14: 0x776de31b libQt6Widgets.so.6`QWidget::repaint() + 187
frame #15: 0x55672e4b
kdiff3`DiffTextWindowFrame::setFirstLine(this=0x5615b3f0,
firstLine=) at difftextwindow.cpp:2036:21
frame #16: 0x760dda8f libQt6Core.so.6`___lldb_unnamed_symbol13786 +
1279
frame #17: 0x55609593
kdiff3`DiffTextWindow::firstLineChanged(this=, _t1=LineRef @
0x7fffc24c) at moc_difftextwindow.cpp:431:5
frame #18: 0x55674606
kdiff3`DiffTextWindow::setFirstLine(this=0x5615dba0, firstLine=LineRef
@ rbp) at difftextwindow.cpp:503:12
frame #19: 0x760dda8f libQt6Core.so.6`___lldb_unnamed_symbol13786 +
1279
frame #20: 0x775e838f
libQt6Widgets.so.6`QAbstractSlider::setValue(int) + 319
frame #21: 0x7762537c
libQt6Widgets.so.6`___lldb_unnamed_symbol22374 + 380
frame #22: 0x7758bc18
libQt6Widgets.so.6`QScrollBar::wheelEvent(QWheelEvent*) + 136
frame #23: 0x776be5d4 libQt6Widgets.so.6`QWidget::event(QEvent*) +
2356
frame #24: 0x7758bb58 libQt6Widgets.so.6`QScrollBar::event(QEvent*)
+ 504
frame #25: 0x7769061e
libQt6Widgets.so.6`QApplicationPrivate::notify_helper(QObject*, QEvent*) + 302
frame #26: 0x776920ae
libQt6Widgets.so.6`QApplication::notify(QObject*, QEvent*) + 494
frame #27: 0x76133f57
libQt6Core.so.6`QCoreApplication::notifyInternal2(QObject*, QEvent*) + 183
frame #28: 0x776be5d4 libQt6Widgets.so.6`QWidget::event(QEvent*) +
2356
frame #29: 0x7769061e
libQt6Widgets.so.6`QApplicationPrivate::notify_helper(QObject*, QEvent*) + 302
frame #30: 0x77693488
libQt6Widgets.so.6`QApplication::notify(QObject*, QEvent*) + 5576
frame #31: 0x76133f57
libQt6Core.so.6`QCoreApplication::notifyInternal2(QObject*, QEvent*) + 183
frame #32: 0x776e95b1
libQt6Widgets.so.6`___lldb_unnamed_symbol23787 + 929
frame #33: 0x776e6c82
libQt6Widgets.so.6`___lldb_unnamed_symbol23778 + 338
frame #34: 0x7769061e
libQt6Widgets.so.6`QApplicationPrivate::notify_helper(QObject*, QEvent*) + 302
frame #35: 0x776920ae
libQt6Widgets.so.6`QApplication::notify(QObject*, QEvent*) + 494
frame #36: 0x76133f57
libQt6Core.so.6`QCoreApplication::notifyInternal2(QObject*, QEvent*) + 183
frame #37: 0x7671675d
libQt6Gui.so.6`QGuiApplicationPrivate::processWheelEvent(QWindowSystemInterfacePrivate::WheelEvent*)
+ 541
frame #38: 0x76778f1a
libQt6Gui.so.6`QWindowSystemInterface::sendWindowSystemEvents(QFlags)
+ 394
