function test_dummy_frame() {
   verify(!webEngineView.mainFrame.isValid);
}

Thread 1 "tst_qmltests" received signal SIGSEGV, Segmentation fault.
0x00007ffff7e3478e in std::__atomic_base<int>::fetch_sub (this=0x55500c5cec9f, __i=1, __m=std::memory_order_acq_rel)
    at /usr/lib/gcc/x86_64-pc-linux-gnu/14/include/g++-v14/bits/atomic_base.h:641
641           { return __atomic_fetch_sub(&_M_i, __i, int(__m)); }
(gdb) bt
#0  0x00007ffff7e3478e in std::__atomic_base<int>::fetch_sub (this=0x55500c5cec9f, __i=1, __m=std::memory_order_acq_rel)
    at /usr/lib/gcc/x86_64-pc-linux-gnu/14/include/g++-v14/bits/atomic_base.h:641
#1  TestQTNamespace::QAtomicOps<int>::deref<int> (_q_value=<error reading variable: Cannot access memory at address 0x55500c5cec9f>)
    at /opt/qt/6.11/gcc.debug/include/QtCore/qatomic_cxx11.h:267
#2  0x00007ffff7e34338 in TestQTNamespace::QBasicAtomicInteger<int>::deref (this=0x55500c5cec9f)
    at /opt/qt/6.11/gcc.debug/include/QtCore/qbasicatomic.h:49
#3  0x00007ffff7e88e2c in TestQTNamespace::QWeakPointer<QtWebEngineCore::WebContentsAdapter>::~QWeakPointer (this=0x7fffffff2390,
    __in_chrg=<optimized out>) at /opt/qt/6.11/gcc.debug/include/QtCore/qsharedpointer_impl.h:621
#4  0x00007ffff7e8b67e in TestQTNamespace::QWeakPointer<QtWebEngineCore::WebContentsAdapter>::operator= (this=0x55555788fe10,
    other=...) at /opt/qt/6.11/gcc.debug/include/QtCore/qsharedpointer_impl.h:633
#5  0x00007ffff7e86809 in TestQTNamespace::QWebEngineFrame::operator= (this=0x55555788fe10)
    at /home/stefan/workspaces-nvme/qt/qt5/qtwebengine.6.11/src/core/api/qwebengineframe.h:24

#6  0x00007ffff7e7ea6e in TestQTNamespace::QQuickWebEngineView::qt_static_metacall (_o=0x7ffebc0bb340,
    _c=TestQTNamespace::QMetaObject::ReadProperty, _id=27, _a=0x7fffffff2bd0)
    at /home/stefan/workspaces-nvme/qt/qt5-builds/6.11/qtwebengine.gcc.debug/src/webenginequick/WebEngineQuick_autogen/include/moc_qquickwebengineview_p.cpp:1388
#7  0x00007ffff7e7ee6d in TestQTNamespace::QQuickWebEngineView::qt_metacall (this=0x7ffebc0bb340,
    _c=TestQTNamespace::QMetaObject::ReadProperty, _id=27, _a=0x7fffffff2bd0)
    at /home/stefan/workspaces-nvme/qt/qt5-builds/6.11/qtwebengine.gcc.debug/src/webenginequick/WebEngineQuick_autogen/include/moc_qquickwebengineview_p.cpp:1442
#8  0x00007fffcb25a5da in TestQTNamespace::QQmlVMEMetaObject::metaCall (this=0x555559266600, o=0x7ffebc0bb340,
    c=TestQTNamespace::QMetaObject::ReadProperty, _id=71, a=0x7fffffff2bd0)
    at /home/stefan/workspaces-nvme/qt/qt5/qtdeclarative.6.11/src/qml/qml/qqmlvmemetaobject.cpp:1226
#9  0x00007fffc9d9ac49 in TestQTNamespace::QMetaObject::metacall (object=0x7ffebc0bb340,
    cl=TestQTNamespace::QMetaObject::ReadProperty, idx=71, argv=0x7fffffff2bd0)
    at /home/stefan/workspaces-nvme/qt/qt5/qtbase.6.11/src/corelib/kernel/qmetaobject.cpp:348
#10 0x00007fffcae9766c in TestQTNamespace::QV4::QObjectWrapper::virtualMetacall (object=0x7fffb41ad8c0,
    call=TestQTNamespace::QMetaObject::ReadProperty, index=71, a=0x7fffffff2bd0)