%
Thread 3 (Thread 0x7fffe93fb700 (LWP 12676)):
#0  0x00007ffff65d7b5d in poll () at ../sysdeps/unix/syscall-template.S:84
No locals.
#1  0x00007ffff432f38c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007ffff432f49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007ffff7126ef9 in QEventDispatcherGlib::processEvents (this=0x7fffdc0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
        d = 0x7fffdc0008e0
        canWait = true
        savedFlags = <optimized out>
        result = <optimized out>
#4  0x00007ffff70c95b9 in QEventLoop::processEvents (this=this@entry=0x7fffe93fae20, flags=..., flags@entry=...) at kernel/qeventloop.cpp:134
        d = <optimized out>
#5  0x00007ffff70c9a32 in QEventLoop::exec (this=this@entry=0x7fffe93fae20, flags=flags@entry=...) at kernel/qeventloop.cpp:212
        d = 0x7fffdc002f90
        locker = {val = 6792608}
        __PRETTY_FUNCTION__ = "int QEventLoop::exec(QEventLoop::ProcessEventsFlags)"
        ref = {d = 0x7fffdc002f90, locker = @0x7fffe93fad70, exceptionCaught = true}
#6  0x00007ffff6eeb91e in QThread::exec (this=this@entry=0x679ef0) at thread/qthread.cpp:515
        d = 0x67a530
        locker = {val = 6792608}
        eventLoop = {<QObject> = {_vptr.QObject = 0x7ffff73ac2e8 <vtable for QEventLoop+16>, static staticMetaObject = {d = {superdata = 0x0, stringdata = 0x7ffff728ef00 <qt_meta_stringdata_QObject>, data = 0x7ffff728ede0 <qt_meta_data_QObject>, static_metacall = 0x7ffff71037c0 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x7fffdc002f90}, static staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0x7ffff7291ba0 <qt_meta_stringdata_Qt>, data = 0x7ffff728f020 <qt_meta_data_Qt>, static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = 0x7ffff73a45c0 <QObject::staticMetaObject>, stringdata = 0x7ffff7289e00 <qt_meta_stringdata_QEventLoop>, data = 0x7ffff7289da0 <qt_meta_data_QEventLoop>, static_metacall = 0x7ffff70c96d6 <QEventLoop::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}
        returnCode = <optimized out>
#7  0x00007ffff638493e in QQmlThreadPrivate::run (this=0x679ef0) at qml/ftw/qqmlthread.cpp:147
No locals.
#8  0x00007ffff6ef194f in QThreadPrivate::start (arg=0x679ef0) at thread/qthread_unix.cpp:376
        thr = 0x679ef0
        data = <optimized out>
        __clframe = {__cancel_routine = 0x7ffff6ef052c <QThreadPrivate::finish(void*)>, __cancel_arg = 0x679ef0, __do_it = 1, __cancel_type = 0}
#9  0x00007ffff59086ba in start_thread (arg=0x7fffe93fb700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7fffe93fb700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140737106654976, 76945344381534922, 0, 140737488344591, 140737106655680, 0, -76966787505503542, -76923744706018614}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#10 0x00007ffff65e382d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
No locals.

Thread 2 (Thread 0x7fffebea4700 (LWP 12675)):
#0  0x00007ffff65d7b5d in poll () at ../sysdeps/unix/syscall-template.S:84
No locals.
#1  0x00007ffff24efc62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
No symbol table info available.
#2  0x00007ffff24f18d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
No symbol table info available.
#3  0x00007ffff7eba152 in QXcbEventReader::run (this=0x6416a0) at qxcbconnection.cpp:1262
        event = 0x0
#4  0x00007ffff6ef194f in QThreadPrivate::start (arg=0x6416a0) at thread/qthread_unix.cpp:376
        thr = 0x6416a0
        data = <optimized out>
        __clframe = {__cancel_routine = 0x7ffff6ef052c <QThreadPrivate::finish(void*)>, __cancel_arg = 0x6416a0, __do_it = 1, __cancel_type = 32767}
#5  0x00007ffff59086ba in start_thread (arg=0x7fffebea4700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7fffebea4700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140737151387392, 76945344381534922, 0, 140737488343167, 140737151388096, 6423816, -76971627396775222, -76923744706018614}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#6  0x00007ffff65e382d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
No locals.

Thread 1 (Thread 0x7ffff7fbd780 (LWP 12671)):
#0  malloc_consolidate (av=av@entry=0x7ffff68a0b20 <main_arena>) at malloc.c:4173
        fb = 0x7ffff68a0b38 <main_arena+24>
        maxfb = 0x7ffff68a0b70 <main_arena+80>
        p = 0x8b979896ae15c5aa
        nextp = 0x8aeac000
        unsorted_bin = 0x7ffff68a0b78 <main_arena+88>
        first_unsorted = <optimized out>
        nextchunk = 0x88680f
        size = 8388068008030020197
        nextsize = 1099511627520
        prevsize = 8388068008030003557
        nextinuse = <optimized out>
        bck = <optimized out>
        fwd = <optimized out>
#1  0x00007ffff655e3be in _int_malloc (av=av@entry=0x7ffff68a0b20 <main_arena>, bytes=bytes@entry=1024) at malloc.c:3448
        nb = 1040
        idx = 64
        bin = <optimized out>
        victim = <optimized out>
        size = <optimized out>
        victim_index = <optimized out>
        remainder = <optimized out>
        remainder_size = <optimized out>
        block = <optimized out>
        bit = <optimized out>
        map = <optimized out>
        fwd = <optimized out>
        bck = <optimized out>
        errstr = 0x0
        __func__ = "_int_malloc"
#2  0x00007ffff65605d4 in __GI___libc_malloc (bytes=1024) at malloc.c:2911
        ar_ptr = 0x7ffff68a0b20 <main_arena>
        victim = <optimized out>
        hook = <optimized out>
#3  0x00007ffff6ef23c6 in QArrayData::allocate (objectSize=objectSize@entry=8, alignment=alignment@entry=8, capacity=125, capacity@entry=62, options=options@entry=...) at tools/qarraydata.cpp:118
        headerSize = <optimized out>
        header = <optimized out>
#4  0x00007ffff60c17a2 in QTypedArrayData<QV4::Value*>::allocate (options=..., capacity=<optimized out>) at .../qt-dev/qtbase/include/QtCore/../../src/corelib/tools/qarraydata.h:223
No locals.
#5  QVector<QV4::Value*>::reallocData (this=this@entry=0x766278, asize=61, aalloc=62, options=...) at .../qt-dev/qtbase/include/QtCore/../../src/corelib/tools/qvector.h:545
        srcEnd = <optimized out>
        dst = <optimized out>
        x = 0x894f30
#6  0x00007ffff60c1cee in QVector<QV4::Value*>::append (this=0x766278, t=@0x8d0d70: 0x7ffff7fd92e8) at .../qt-dev/qtbase/include/QtCore/../../src/corelib/tools/qvector.h:645
        copy = 0x7ffff7fd92e8
        opt = {i = 4294954576}
        isTooSmall = <optimized out>
#7  0x00007ffff61ce4b2 in QVector<QV4::Value*>::push_back (t=@0x8d0d70: 0x7ffff7fd92e8, this=<optimized out>) at .../qt-dev/qtbase/include/QtCore/../../src/corelib/tools/qvector.h:258
No locals.
#8  QV4::WeakValue::free (this=this@entry=0x8d0d70) at jsruntime/qv4persistent.cpp:402
No locals.
#9  0x00007ffff62c9f50 in QV4::WeakValue::clear (this=0x8d0d70) at .../qt-dev/qtbase/include/QtQml/5.10.0/QtQml/private/../../../../../../qtdeclarative/src/qml/jsruntime/qv4persistent_p.h:204
No locals.
#10 QQmlData::destroyed (this=0x8d0d10, object=0x8d0cc0) at qml/qqmlengine.cpp:1779
        binding = <optimized out>
        signalHandler = <optimized out>
        __PRETTY_FUNCTION__ = "void QQmlData::destroyed(QObject*)"
#11 0x00007ffff62c9fa8 in QQmlData::destroyed (d=<optimized out>, o=<optimized out>) at qml/qqmlengine.cpp:756
        ddata = <optimized out>
#12 0x00007ffff7102fcd in QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:910
        d = 0xccde10
        __PRETTY_FUNCTION__ = "virtual QObject::~QObject()"
#13 0x00007ffff706db59 in QAbstractItemModel::~QAbstractItemModel (this=0x8d0cc0, __in_chrg=<optimized out>) at itemmodels/qabstractitemmodel.cpp:1529
No locals.
#14 0x00007ffff706dbed in QAbstractListModel::~QAbstractListModel (this=<optimized out>, __in_chrg=<optimized out>) at itemmodels/qabstractitemmodel.cpp:3560
No locals.
#15 0x00007ffff63bf286 in QQmlListModel::~QQmlListModel (this=0x8d0cc0, __in_chrg=<optimized out>) at types/qqmllistmodel.cpp:1696
No locals.
#16 0x00007ffff62cd23f in QQmlPrivate::QQmlElement<QQmlListModel>::~QQmlElement (this=0x8d0cc0, __in_chrg=<optimized out>) at .../qt-dev/qtbase/include/QtQml/../../../qtdeclarative/src/qml/qml/qqmlprivate.h:104
No locals.
#17 QQmlPrivate::QQmlElement<QQmlListModel>::~QQmlElement (this=0x8d0cc0, __in_chrg=<optimized out>) at .../qt-dev/qtbase/include/QtQml/../../../qtdeclarative/src/qml/qml/qqmlprivate.h:104
No locals.
#18 0x00007ffff71023b8 in QObjectPrivate::deleteChildren (this=this@entry=0x850fc0) at kernel/qobject.cpp:1992
        i = 0
#19 0x00007ffff71035ee in QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:1022
        d = 0x850fc0
        __PRETTY_FUNCTION__ = "virtual QObject::~QObject()"
#20 0x00007ffff7b399e4 in QQuickItem::~QQuickItem (this=0x89c1f0, __in_chrg=<optimized out>) at items/qquickitem.cpp:2365
No locals.
#21 0x00007ffff7b5b38c in QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement (this=0x89c1f0, __in_chrg=<optimized out>) at .../qt-dev/qtbase/include/QtQml/../../../qtdeclarative/src/qml/qml/qqmlprivate.h:104
No locals.
#22 QQmlPrivate::QQmlElement<QQuickItem>::~QQmlElement (this=0x89c1f0, __in_chrg=<optimized out>) at .../qt-dev/qtbase/include/QtQml/../../../qtdeclarative/src/qml/qml/qqmlprivate.h:104
No locals.
#23 0x00007ffff70fac7c in qDeleteInEventHandler (o=o@entry=0x89c1f0) at kernel/qobject.cpp:4598
No locals.
#24 0x00007ffff70fc9f2 in QObject::event (this=this@entry=0x89c1f0, e=e@entry=0xcd6c60) at kernel/qobject.cpp:1237
No locals.
#25 0x00007ffff7b37a9c in QQuickItem::event (this=0x89c1f0, ev=0xcd6c60) at items/qquickitem.cpp:7804
No locals.
#26 0x00007ffff70cb6f5 in QCoreApplicationPrivate::notify_helper (receiver=receiver@entry=0x89c1f0, event=event@entry=0xcd6c60) at kernel/qcoreapplication.cpp:1167
No locals.
#27 0x00007ffff70cb783 in doNotify (receiver=receiver@entry=0x89c1f0, event=event@entry=0xcd6c60) at kernel/qcoreapplication.cpp:1108
        __PRETTY_FUNCTION__ = "bool doNotify(QObject*, QEvent*)"
#28 0x00007ffff70cb8f7 in QCoreApplication::notify (this=this@entry=0x7fffffffd8b0, receiver=receiver@entry=0x89c1f0, event=event@entry=0xcd6c60) at kernel/qcoreapplication.cpp:1094
No locals.
#29 0x00007ffff74d4470 in QGuiApplication::notify (this=0x7fffffffd8b0, object=0x89c1f0, event=0xcd6c60) at kernel/qguiapplication.cpp:1695
No locals.
#30 0x00007ffff70cb84c in QCoreApplication::notifyInternal2 (receiver=receiver@entry=0x89c1f0, event=event@entry=0xcd6c60) at kernel/qcoreapplication.cpp:1018
        selfRequired = true
        result = false
        cbdata = {0x89c1f0, 0xcd6c60, 0x7fffffffd4bf}
        d = <optimized out>
        threadData = 0x61b1a0
#31 0x00007ffff70d0cdf in QCoreApplication::sendEvent (event=0xcd6c60, receiver=0x89c1f0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
No locals.
#32 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x61b1a0) at kernel/qcoreapplication.cpp:1693
        e = 0xcd6c60
        r = 0x89c1f0
        __PRETTY_FUNCTION__ = "static void QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*)"
        locker = {val = 6402512}
        startOffset = 0
        i = @0x61b1c4: 2
        cleanup = {receiver = 0x0, event_type = 0, data = 0x61b1a0, exceptionCaught = true}
#33 0x00007ffff70d10c8 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1547
        data = <optimized out>
#34 0x00007ffff71275ea in postEventSourceDispatch (s=0x66f5d0) at kernel/qeventdispatcher_glib.cpp:276
        source = 0x66f5d0
#35 0x00007ffff432f197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#36 0x00007ffff432f3f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#37 0x00007ffff432f49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#38 0x00007ffff7126ef9 in QEventDispatcherGlib::processEvents (this=0x667a30, flags=...) at kernel/qeventdispatcher_glib.cpp:423
        d = 0x671da0
        canWait = true
        savedFlags = <optimized out>
        result = <optimized out>
#39 0x00007ffff7f47c28 in QPAEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at qeventdispatcher_glib.cpp:122
No locals.
#40 0x00007ffff70c95b9 in QEventLoop::processEvents (this=this@entry=0x7fffffffd810, flags=..., flags@entry=...) at kernel/qeventloop.cpp:134
        d = <optimized out>
#41 0x00007ffff70c9a32 in QEventLoop::exec (this=this@entry=0x7fffffffd810, flags=flags@entry=...) at kernel/qeventloop.cpp:212
        d = 0x76e6a0
        locker = {val = 6402736}
        __PRETTY_FUNCTION__ = "int QEventLoop::exec(QEventLoop::ProcessEventsFlags)"
        ref = {d = 0x76e6a0, locker = @0x7fffffffd770, exceptionCaught = true}
#42 0x00007ffff70d34b4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1306
        threadData = 0x61b1a0
        __PRETTY_FUNCTION__ = "static int QCoreApplication::exec()"
        eventLoop = {<QObject> = {_vptr.QObject = 0x7ffff73ac2e8 <vtable for QEventLoop+16>, static staticMetaObject = {d = {superdata = 0x0, stringdata = 0x7ffff728ef00 <qt_meta_stringdata_QObject>, data = 0x7ffff728ede0 <qt_meta_data_QObject>, static_metacall = 0x7ffff71037c0 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x76e6a0}, static staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0x7ffff7291ba0 <qt_meta_stringdata_Qt>, data = 0x7ffff728f020 <qt_meta_data_Qt>, static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = 0x7ffff73a45c0 <QObject::staticMetaObject>, stringdata = 0x7ffff7289e00 <qt_meta_stringdata_QEventLoop>, data = 0x7ffff7289da0 <qt_meta_data_QEventLoop>, static_metacall = 0x7ffff70c96d6 <QEventLoop::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}
        returnCode = <optimized out>
#43 0x00007ffff74cf1ea in QGuiApplication::exec () at kernel/qguiapplication.cpp:1686
No locals.
#44 0x0000000000400f63 in main (argc=1, argv=0x7fffffffd9e8) at ../qtbug61340/main.cpp:14
        app = {<QCoreApplication> = {<QObject> = {_vptr.QObject = 0x7ffff78f9fe0 <vtable for QGuiApplication+16>, static staticMetaObject = {d = {superdata = 0x0, stringdata = 0x7ffff728ef00 <qt_meta_stringdata_QObject>, data = 0x7ffff728ede0 <qt_meta_data_QObject>, static_metacall = 0x7ffff71037c0 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x61b070}, static staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0x7ffff7291ba0 <qt_meta_stringdata_Qt>, data = 0x7ffff728f020 <qt_meta_data_Qt>, static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = 0x7ffff73a45c0 <QObject::staticMetaObject>, stringdata = 0x7ffff728a3e0 <qt_meta_stringdata_QCoreApplication>, data = 0x7ffff728a2c0 <qt_meta_data_QCoreApplication>, static_metacall = 0x7ffff70cd368 <QCoreApplication::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, static self = 0x7fffffffd8b0}, static staticMetaObject = {d = {superdata = 0x7ffff73ac480 <QCoreApplication::staticMetaObject>, stringdata = 0x7ffff7827d80 <qt_meta_stringdata_QGuiApplication>, data = 0x7ffff7827b20 <qt_meta_data_QGuiApplication>, static_metacall = 0x7ffff74d9abc <QGuiApplication::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}
        view = {<QQuickWindow> = {<QWindow> = {<QObject> = {_vptr.QObject = 0x7ffff7dc5568 <vtable for QQuickView+16>, static staticMetaObject = {d = {superdata = 0x0, stringdata = 0x7ffff728ef00 <qt_meta_stringdata_QObject>, data = 0x7ffff728ede0 <qt_meta_data_QObject>, static_metacall = 0x7ffff71037c0 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x675d60}, static staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0x7ffff7291ba0 <qt_meta_stringdata_Qt>, data = 0x7ffff728f020 <qt_meta_data_Qt>, static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}}, <QSurface> = {_vptr.QSurface = 0x7ffff7dc5690 <vtable for QQuickView+312>, m_type = QSurface::Window, m_reserved = 0x0}, static staticMetaObject = {d = {superdata = 0x7ffff73a45c0 <QObject::staticMetaObject>, stringdata = 0x7ffff7829420 <qt_meta_stringdata_QWindow>, data = 0x7ffff7828ce0 <qt_meta_data_QWindow>, static_metacall = 0x7ffff74e280e <QWindow::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = 0x7ffff78fa2a0 <QWindow::staticMetaObject>, stringdata = 0x7ffff7ce6c80 <qt_meta_stringdata_QQuickWindow>, data = 0x7ffff7ce6920 <qt_meta_data_QQuickWindow>, static_metacall = 0x7ffff7b47a5c <QQuickWindow::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = 0x7ffff7dbd7e0 <QQuickWindow::staticMetaObject>, stringdata = 0x7ffff7cf9140 <qt_meta_stringdata_QQuickView>, data = 0x7ffff7cf8fe0 <qt_meta_data_QQuickView>, static_metacall = 0x7ffff7bec74a <QQuickView::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}