SUMMARY

Kirigami 5.68.0 causes virtualdesktop and regional settings KCMs to crash when opened in systemnsettings

The cause has been git bisected to the following commit:

https://cgit.kde.org/kirigami.git/commit/?id=9b7cae898ed7d9b58e65035b8216ec6ff78bfa17

Launchpad bugs:

https://bugs.launchpad.net/bugs/1869280

https://bugs.launchpad.net/bugs/1869438

Backtraces:

Virtual desktop KCM:

Thread 1 "systemsettings5" received signal SIGSEGV, Segmentation fault.
0x00007ffff58661d2 in QQmlData::wasDeleted (object=0x555557858200) at ../../include/QtQml/5.12.5/QtQml/private/../../../../../src/qml/qml/qqmldata_p.h:338
338     ../../include/QtQml/5.12.5/QtQml/private/../../../../../src/qml/qml/qqmldata_p.h: No such file or directory.
(gdb) bt
#0  0x00007ffff58661d2 in QQmlData::wasDeleted (object=0x555557858200) at ../../include/QtQml/5.12.5/QtQml/private/../../../../../src/qml/qml/qqmldata_p.h:338
#1  QV4::QObjectWrapper::wrap (engine=0x555557aaff20, object=0x555557858200)
    at ../../include/QtQml/5.12.5/QtQml/private/../../../../../src/qml/jsruntime/qv4qobjectwrapper_p.h:215
#2  0x00007ffff590fbf8 in QV4::ExecutionEngine::fromVariant (this=this@entry=0x555557aaff20, variant=...) at jsruntime/qv4engine.cpp:1514
#3  0x00007ffff58638cd in searchContextProperties (v4=v4@entry=0x555557aaff20, context=context@entry=0x555557546430, name=<optimised out>, 
    hasProperty=hasProperty@entry=0x7fffffffd197, base=base@entry=0x0, lookup=lookup@entry=0x0, originalLookup=<optimised out>, ep=<optimised out>)
    at /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:115
#4  0x00007ffff5864770 in QV4::QQmlContextWrapper::getPropertyAndBase (resource=<optimised out>, id=..., receiver=<optimised out>, hasProperty=0x7fffffffd197, base=0x0, 
    lookup=0x0) at ../../include/QtQml/5.12.5/QtQml/private/../../../../../src/qml/jsruntime/qv4value_p.h:301
#5  0x00007ffff58650b4 in QV4::QQmlContextWrapper::resolveQmlContextPropertyLookupGetter (l=0x555557647490, engine=0x555557aaff20, base=0x0)
    at ../../include/QtQml/5.12.5/QtQml/private/../../../../../src/qml/jsruntime/qv4value_p.h:398
#6  0x00007fffbf37c365 in ?? ()
#7  0x0000000000000000 in ?? ()

Regional Settings KCMs:

Thread 1 "systemsettings5" received signal SIGSEGV, Segmentation fault.
0x0000000000000000 in ?? ()
(gdb) bt
#0  0x0000000000000000 in ?? ()
#1  0x00007ffff5886418 in QQmlPropertyCache::callJSFactoryMethod (args=0x7fffffffc470, object=0x555558010e60, this=<optimised out>)
    at ../../include/QtQml/5.12.5/QtQml/private/../../../../../src/qml/qml/qqmlpropertycache_p.h:875
#2  QV4::QObjectWrapper::create (engine=<optimised out>, object=0x555558010e60) at jsruntime/qv4qobjectwrapper.cpp:691
#3  0x00007ffff5888373 in QV4::QObjectWrapper::wrap_slowPath (engine=0x555557455e60, object=0x555558010e60) at jsruntime/qv4qobjectwrapper.cpp:616
#4  0x00007ffff590fbf8 in QV4::ExecutionEngine::fromVariant (this=this@entry=0x555557455e60, variant=...) at jsruntime/qv4engine.cpp:1514
#5  0x00007ffff58638cd in searchContextProperties (v4=v4@entry=0x555557455e60, context=context@entry=0x555557fffb70, name=<optimised out>, 
    hasProperty=hasProperty@entry=0x7fffffffc727, base=base@entry=0x0, lookup=lookup@entry=0x0, originalLookup=<optimised out>, ep=<optimised out>)
    at /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:115
#6  0x00007ffff5864770 in QV4::QQmlContextWrapper::getPropertyAndBase (resource=<optimised out>, id=..., receiver=<optimised out>, hasProperty=0x7fffffffc727, base=0x0, 
    lookup=0x0) at ../../include/QtQml/5.12.5/QtQml/private/../../../../../src/qml/jsruntime/qv4value_p.h:301
#7  0x00007ffff58650b4 in QV4::QQmlContextWrapper::resolveQmlContextPropertyLookupGetter (l=0x5555573e9a00, engine=0x555557455e60, base=0x0)
    at ../../include/QtQml/5.12.5/QtQml/private/../../../../../src/qml/jsruntime/qv4value_p.h:398
#8  0x00007fffc40a09b5 in ?? ()
#9  0x0000000000000000 in ?? ()


SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 
KDE Plasma Version: 5.18.3
KDE Frameworks Version: 5.68.0
Qt Version: 5.12.5