Details
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Bug
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Resolution: Unresolved
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P1: Critical
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None
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6.5.8
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None
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Linux/Wayland
Description
#0 __sanitizer::Die () at ../../../../src/libsanitizer/sanitizer_common/sanitizer_termination.cpp:50 #1 0x00007fff8e1a8408 in __ubsan::ScopedReport::~ScopedReport (this=this@entry=0x7fffffffc160) at ../../../../src/libsanitizer/ubsan/ubsan_diag.cpp:396 #2 0x00007fff8e1ae438 in HandleDynamicTypeCacheMiss (Data=<optimized out>, Pointer=106790067196864, Hash=<optimized out>, Opts=...) at ../../../../src/libsanitizer/ubsan/ubsan_handlers_cxx.cpp:81 #3 0x00007fff8e1ae78f in __ubsan::__ubsan_handle_dynamic_type_cache_miss (Data=<optimized out>, Pointer=<optimized out>, Hash=<optimized out>) at ../../../../src/libsanitizer/ubsan/ubsan_handlers_ cxx.cpp:87 #4 0x00007fffca620303 in QWaylandCompositorPrivate::get (compositor=0x6120000553c0) at qtwayland/src/compositor/compositor_api/qwaylandcompositor_p.h:49 #5 0x00007fffca72c96a in QWaylandOutput::~QWaylandOutput (this=0x612000058840) at qtwayland/src/compositor/compositor_api/qwaylandoutput.cpp:282 #6 0x00007fffcaf116f6 in QWaylandQuickOutput::~QWaylandQuickOutput (this=0x612000058840) at qtwayland/src/compositor/compositor_api/qwaylandquickoutput.h:19 #7 0x00007fffcb03c12f in QQmlPrivate::QQmlElement<QWaylandQuickOutput>::~QQmlElement (this=0x612000058840) at qtdeclarative/src/qml/qml/qqmlprivate.h:99 #8 0x00007fffcb03c188 in QQmlPrivate::QQmlElement<QWaylandQuickOutput>::~QQmlElement (this=0x612000058840) at qtdeclarative/src/qml/qml/qqmlprivate.h:99 #9 0x00007fffba2c6a79 in QQmlDelegateModel::~QQmlDelegateModel (this=0x6030000fa150) at qtdeclarative/src/qmlmodels/qqmldelegatemodel.cpp:237 #10 0x00007fffba2c834a in QQmlDelegateModel::~QQmlDelegateModel (this=0x6030000fa150) at qtdeclarative/src/qmlmodels/qqmldelegatemodel.cpp:260 #11 0x00007fff91e11a51 in QObjectPrivate::deleteChildren (this=0x611000037540) at qtbase/src/corelib/kernel/qobject.cpp:2228 #12 0x00007fff91e04bf3 in QObject::~QObject (this=0x611000037400) at qtbase/src/corelib/kernel/qobject.cpp:1164 #13 0x00007fffba027c7f in QQmlInstantiator::~QQmlInstantiator (this=0x611000037400) at qtdeclarative/src/qmlmodels/qqmlinstantiator.cpp:210 #14 0x00007fffba00f047 in QQmlPrivate::QQmlElement<QQmlInstantiator>::~QQmlElement (this=0x611000037400) at qtdeclarative/src/qml/qml/qqmlprivate.h:99 #15 0x00007fffba00f078 in QQmlPrivate::QQmlElement<QQmlInstantiator>::~QQmlElement (this=0x611000037400) at qtdeclarative/src/qml/qml/qqmlprivate.h:99 #16 0x00007fff91e11a51 in QObjectPrivate::deleteChildren (this=0x61600003c380) at qtbase/src/corelib/kernel/qobject.cpp:2228 #17 0x00007fff91e04bf3 in QObject::~QObject (this=0x6120000553c0) at qtbase/src/corelib/kernel/qobject.cpp:1164 #18 0x00007fffcaa390cc in QWaylandObject::~QWaylandObject (this=0x6120000553c0) at qtwayland/src/compositor/global/qwaylandcompositorextension.cpp:227 #19 0x00007fffca63e068 in QWaylandCompositor::~QWaylandCompositor (this=0x6120000553c0) at qtwayland/src/compositor/compositor_api/qwaylandcompositor.cpp:568 #20 0x00007fffcae6a62f in QWaylandQuickCompositor::~QWaylandQuickCompositor (this=0x6120000553c0) at qtwayland/src/compositor/compositor_api/qwaylandquickcompositor.h:18 #21 0x00007fffcae72744 in QWaylandQuickCompositorQuickExtensionContainer::~QWaylandQuickCompositorQuickExtensionContainer (this=0x6120000553c0) at qtwayland/src/compositor/compositor_api/qwaylandco mpositorquickextensions_p.h:35 #22 0x00007fffcb03c9f1 in QQmlPrivate::QQmlElement<QWaylandQuickCompositorQuickExtensionContainer>::~QQmlElement (this=0x6120000553c0) at qtdeclarative/src/qml/qml/qqmlprivate.h:99 #23 0x00007fffcb03ca22 in QQmlPrivate::QQmlElement<QWaylandQuickCompositorQuickExtensionContainer>::~QQmlElement (this=0x6120000553c0) at qtdeclarative/src/qml/qml/qqmlprivate.h:99 #24 0x00007fffa080fff4 in qDeleteAll<QList<QObject*>::const_iterator> (begin=..., end=...) at qtbase/src/corelib/tools/qalgorithms.h:27 #25 0x00007fffa080d2f1 in qDeleteAll<QList<QObject*> > (c=...) at qtbase/src/corelib/tools/qalgorithms.h:35 #26 0x00007fffa07fc324 in QQmlApplicationEnginePrivate::cleanUp (this=0x618000007c80) at qtdeclarative/src/qml/qml/qqmlapplicationengine.cpp:40 #27 0x00007fffa0803cac in QQmlApplicationEngine::~QQmlApplicationEngine (this=0x7fffffffd800) at qtdeclarative/src/qml/qml/qqmlapplicationengine.cpp:328 #28 0x0000555555ef5984 in main (argc=2, argv=0x7fffffffe5c8) at Compositor/Main.cpp:143
As the bt shows, the QWaylandCompositor is being deleted (and it's down to a QObject), and yet one of the children deleted from there is a QWaylandOutput whose destructor does
278│ QWaylandOutput::~QWaylandOutput()
279│ {
280│ Q_D(QWaylandOutput);
281│ if (d->compositor)
282├───────> QWaylandCompositorPrivate::get(d->compositor)->removeOutput(this);
283│ }
This is the usual problem with "intelligent" destructors.
IMHO removing outputs shouldn't be done from the destructor, but from the place that removes individual outputs (it's not needed when destructing the whole compositor).
Alternatively, we could delete all children in ~QWaylandCompositor?
Any other idea?