Thread 4 (Thread 0x7fae25c73700 (LWP 24207)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55d374839568) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
        __ret = -512
        oldtype = 0
        err = <optimized out>
        oldtype = <optimized out>
        err = <optimized out>
        __ret = <optimized out>
        resultvar = <optimized out>
        __arg4 = <optimized out>
        __arg3 = <optimized out>
        __arg2 = <optimized out>
        __arg1 = <optimized out>
        _a4 = <optimized out>
        _a3 = <optimized out>
        _a2 = <optimized out>
        _a1 = <optimized out>
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55d374839518, cond=0x55d374839540) at pthread_cond_wait.c:502
        spin = 0
        buffer = {__routine = 0x7fae31048050 <__condvar_cleanup_waiting>, __arg = 0x7fae25c72dc0, __canceltype = 49, __prev = 0x0}
        cbuffer = {wseq = 0, cond = 0x55d374839540, mutex = 0x55d374839518, private = 0}
        rt = <optimized out>
        err = <optimized out>
        g = 0
        flags = <optimized out>
        g1_start = <optimized out>
        signals = <optimized out>
        result = 0
        wseq = 0
        seq = 0
        private = <optimized out>
        maxspin = <optimized out>
        err = <optimized out>
        result = <optimized out>
        wseq = <optimized out>
        g = <optimized out>
        seq = <optimized out>
        flags = <optimized out>
        private = <optimized out>
        signals = <optimized out>
        g1_start = <optimized out>
        spin = <optimized out>
        buffer = <optimized out>
        cbuffer = <optimized out>
        rt = <optimized out>
        s = <optimized out>
#2  __pthread_cond_wait (cond=0x55d374839540, mutex=0x55d374839518) at pthread_cond_wait.c:655
No locals.
#3  0x00007fae2626a36b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
No symbol table info available.
#4  0x00007fae2626a0d7 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
No symbol table info available.
#5  0x00007fae31042182 in start_thread (arg=<optimized out>) at pthread_create.c:486
        ret = <optimized out>
        pd = <optimized out>
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140385934849792, 3851967783268047867, 140735095386270, 140735095386271, 0, 140385934847872, -3879644628182311941, -3879690266584753157}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#6  0x00007fae31177b1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.

Thread 3 (Thread 0x7fae27fff700 (LWP 24204)):
#0  0x00007fae3116b729 in __GI___poll (fds=0x7fae20004e00, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
        sc_ret = <optimized out>
#1  0x00007fae30804bf6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007fae30804d1c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007fae3185e899 in QEventDispatcherGlib::processEvents (this=0x7fae20000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:423
        d = 0x7fae20000b40
        canWait = true
        savedFlags = {i = 0}
        result = false
#4  0x00007fae317c44cb in QEventLoop::processEvents (this=0x7fae27ffedb0, flags=...) at kernel/qeventloop.cpp:138
        d = 0x7fae20002990
#5  0x00007fae317c4805 in QEventLoop::exec (this=0x7fae27ffedb0, flags=...) at kernel/qeventloop.cpp:225
        d = 0x7fae20002990
        locker = {val = 94366680896248}
        __PRETTY_FUNCTION__ = "int QEventLoop::exec(QEventLoop::ProcessEventsFlags)"
        ref = {d = 0x7fae20002990, locker = @0x7fae27ffed18, exceptionCaught = true}
        app = 0x7fff715e4670
#6  0x00007fae3154a612 in QThread::exec (this=0x7fae2de12dc0 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:536
        d = 0x55d3747e52a0
        locker = {val = 94366680896248}
        eventLoop = {<QObject> = {_vptr.QObject = 0x7fae31bbb520 <vtable for QEventLoop+16>, static staticMetaObject = {d = {superdata = {direct = 0x0}, stringdata = 0x7fae31a2a1a0 <qt_meta_stringdata_QObject>, data = 0x7fae31a2a2c0 <qt_meta_data_QObject>, static_metacall = 0x7fae31817b40 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x7fae20002990}, static staticQtMetaObject = {d = {superdata = {direct = 0x0}, stringdata = 0x7fae31a1b820 <qt_meta_stringdata_Qt>, data = 0x7fae31a27340 <qt_meta_data_Qt>, static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = {direct = 0x7fae31bb2ca0 <QObject::staticMetaObject>}, stringdata = 0x7fae31a12940 <qt_meta_stringdata_QEventLoop>, data = 0x7fae31a129a0 <qt_meta_data_QEventLoop>, static_metacall = 0x7fae317c4c06 <QEventLoop::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}
        returnCode = 0
#7  0x00007fae2dd5737b in QDBusConnectionManager::run (this=0x7fae2de12dc0 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:179
        locker = {_M_device = @0x7fae2de12dc0}
#8  0x00007fae3154d4d1 in QThreadPrivate::start (arg=0x7fae2de12dc0 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:342
        thr = 0x7fae2de12dc0 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>
        data = 0x55d3747e7020
        __clframe = {__cancel_routine = 0x7fae3154d58a <QThreadPrivate::finish(void*)>, __cancel_arg = 0x7fae2de12dc0 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>, __do_it = 1, __cancel_type = 0}
#9  0x00007fae31042182 in start_thread (arg=<optimized out>) at pthread_create.c:486
        ret = <optimized out>
        pd = <optimized out>
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140385972123392, 3851967783268047867, 140735095390782, 140735095390783, 140735095390992, 140385972121472, -3879640292412826629, -3879690266584753157}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#10 0x00007fae31177b1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.

Thread 2 (Thread 0x7fae2d1c0700 (LWP 24203)):
#0  0x00007fae3116b729 in __GI___poll (fds=0x7fae2d1bfcc8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
        sc_ret = <optimized out>
#1  0x00007fae2eb05917 in ?? () from /lib/x86_64-linux-gnu/libxcb.so.1
No symbol table info available.
#2  0x00007fae2eb0753a in xcb_wait_for_event () from /lib/x86_64-linux-gnu/libxcb.so.1
No symbol table info available.
#3  0x00007fae2dfbd7ca in QXcbEventQueue::run (this=0x55d374733ef0) at qxcbeventqueue.cpp:228
        event = 0x0
        connection = 0x55d3747450e0
        tail = 0x7fae2e100fc8 <QXcbEventQueue::qXcbEventNodeFactory(xcb_generic_event_t*)::qXcbNodePool+72>
        enqueueEvent = {__tail = @0x7fae2d1bfdf8, __this = 0x55d374733ef0}
#4  0x00007fae3154d4d1 in QThreadPrivate::start (arg=0x55d374733ef0) at thread/qthread_unix.cpp:342
        thr = 0x55d374733ef0
        data = 0x55d374734c80
        __clframe = {__cancel_routine = 0x7fae3154d58a <QThreadPrivate::finish(void*)>, __cancel_arg = 0x55d374733ef0, __do_it = 1, __cancel_type = 0}
#5  0x00007fae31042182 in start_thread (arg=<optimized out>) at pthread_create.c:486
        ret = <optimized out>
        pd = <optimized out>
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140386057848576, 3851967783268047867, 140735095389758, 140735095389759, 140735095389968, 140386057846656, -3879663622138307589, -3879690266584753157}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
#6  0x00007fae31177b1f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.

Thread 1 (Thread 0x7fae2e6c4780 (LWP 24033)):
#0  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
        set = {__val = {0, 0, 2531069252348749615, 653888361323051053, 13831198063404271081, 0, 0, 0, 0, 0, 0, 0, 0, 0, 140735095379968, 140386128499013}}
        pid = <optimized out>
        tid = <optimized out>
        ret = <optimized out>
#1  0x00007fae3107f535 in __GI_abort () at abort.c:79
        save_stage = 1
        act = {__sigaction_handler = {sa_handler = 0x0, sa_sigaction = 0x0}, sa_mask = {__val = {0 <repeats 13 times>, 140735095380488, 140386132605248, 140735095380416}}, sa_flags = 827456982, sa_restorer = 0x55d374730440}
        sigs = {__val = {32, 0 <repeats 15 times>}}
#2  0x00007fae315420fe in qt_message_fatal (context=..., message=...) at global/qlogging.cpp:1894
No locals.
#3  0x00007fae3153e708 in QMessageLogger::fatal (this=0x7fff715e1b30, msg=0x55d373d85d04 "loop!") at global/qlogging.cpp:893
        message = {static null = {<No data fields>}, d = 0x55d374bf5ca0}
        ap = {{gp_offset = 16, fp_offset = 48, overflow_arg_area = 0x7fff715e1af0, reg_save_area = 0x7fff715e1a30}}
#4  0x000055d373d83d9f in EventFilter::eventFilter (this=0x55d3747e75a0, w=0x55d374abb4a0, e=0x7fff715e20b0) at ../qtbug20677/main.cpp:46
        n = 10001
        __PRETTY_FUNCTION__ = "virtual bool EventFilter::eventFilter(QObject*, QEvent*)"
#5  0x00007fae317c80f5 in QCoreApplicationPrivate::sendThroughApplicationEventFilters (this=0x55d3747315e0, receiver=0x55d374abb4a0, event=0x7fff715e20b0) at kernel/qcoreapplication.cpp:1200
        obj = 0x55d3747e75a0
        i = 0
        __PRETTY_FUNCTION__ = "bool QCoreApplicationPrivate::sendThroughApplicationEventFilters(QObject*, QEvent*)"
#6  0x00007fae32739252 in QApplicationPrivate::notify_helper (this=0x55d3747315e0, receiver=0x55d374abb4a0, e=0x7fff715e20b0) at kernel/qapplication.cpp:3661
        consumed = false
        filtered = false
#7  0x00007fae327391b0 in QApplication::notify (this=0x7fff715e4670, receiver=0x55d374abb4a0, e=0x7fff715e20b0) at kernel/qapplication.cpp:3640
        d = 0x55d3747315e0
        __PRETTY_FUNCTION__ = "virtual bool QApplication::notify(QObject*, QEvent*)"
        res = false
#8  0x00007fae317c7e19 in QCoreApplication::notifyInternal2 (receiver=0x55d374abb4a0, event=0x7fff715e20b0) at kernel/qcoreapplication.cpp:1092
        selfRequired = true
        result = false
        cbdata = {0x55d374abb4a0, 0x7fff715e20b0, 0x7fff715e1fb6}
        d = 0x55d3748662a0
        threadData = 0x55d3747303c0
        scopeLevelCounter = {threadData = 0x55d3747303c0}
#9  0x00007fae317c8818 in QCoreApplication::sendEvent (receiver=0x55d374abb4a0, event=0x7fff715e20b0) at kernel/qcoreapplication.cpp:1487
No locals.
#10 0x00007fae327821e3 in QWidgetPrivate::setGeometry_sys (this=0x55d3748662a0, x=1, y=1, w=684, h=493, isMove=true) at kernel/qwidget.cpp:7128
        e = {<QEvent> = {_vptr.QEvent = 0x7fae32579f18 <vtable for QResizeEvent+16>, static staticMetaObject = {d = {superdata = {direct = 0x0}, stringdata = 0x7fae31a14620 <qt_meta_stringdata_QEvent>, data = 0x7fae31a160a0 <qt_meta_data_QEvent>, static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}, d = 0x0, t = 14, posted = 0, spont = 0, m_accept = 1, reserved = 0}, s = {wd = 684, ht = 493}, olds = {wd = 698, ht = 507}}
        q = 0x55d374abb4a0
        oldp = {xp = 1, yp = 1}
        olds = {wd = 698, ht = 507}
        r = {x1 = 1, y1 = 1, x2 = 684, y2 = 493}
        isResize = true
        oldPos = {xp = 1, yp = 1}
        needsShow = false
#11 0x00007fae327817b1 in QWidget::setGeometry (this=0x55d374abb4a0, r=...) at kernel/qwidget.cpp:7019
        d = 0x55d3748662a0
#12 0x00007fae3287ef0d in QAbstractScrollAreaPrivate::layoutChildren_helper (this=0x55d374aa7a40, needHorizontalScrollbar=0x7fff715e22f6, needVerticalScrollbar=0x7fff715e22f7) at widgets/qabstractscrollarea.cpp:446
        q = 0x55d374a96eb0
        htransient = false
        needh = true
        vtransient = false
        needv = true
        opt = {version = 0, type = 0, state = {i = 65537}, direction = Qt::LeftToRight, rect = {x1 = 0, y1 = 0, x2 = 699, y2 = 508}, fontMetrics = {d = {d = 0x55d3747e28b0}}, palette = {static staticMetaObject = {d = {superdata = {direct = 0x0}, stringdata = 0x7fae323de2e0 <qt_meta_stringdata_QPalette>, data = 0x7fae323de760 <qt_meta_data_QPalette>, static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}, d = 0x55d3747e7320, {data = {current_group = 0, resolve_mask = 0}, for_faster_swapping_dont_use = 0}}, styleObject = 0x55d374a96eb0}
        hscrollOverlap = 0
        vscrollOverlap = 0
        hsbExt = 14
        vsbExt = 14
        extPoint = {xp = 14, yp = 14}
        extSize = {wd = 14, ht = 14}
        widgetRect = {x1 = 0, y1 = 0, x2 = 699, y2 = 508}
        hasCornerWidget = false
        cornerOffset = {xp = 14, yp = 14}
        controlsRect = {x1 = 1, y1 = 1, x2 = 698, y2 = 507}
        viewportRect = {x1 = 1, y1 = 1, x2 = 684, y2 = 493}
        cornerPoint = {xp = 685, yp = 494}
        vHeaderRight = 0
        hHeaderBottom = 0
#13 0x00007fae3287dea0 in QAbstractScrollAreaPrivate::layoutChildren (this=0x55d374aa7a40) at widgets/qabstractscrollarea.cpp:322
        needH = false
        needV = false
#14 0x00007fae32881090 in QAbstractScrollAreaPrivate::_q_showOrHideScrollBars (this=0x55d374aa7a40) at widgets/qabstractscrollarea.cpp:1422
No locals.
#15 0x00007fae328818a6 in QAbstractScrollArea::qt_static_metacall (_o=0x55d374a96eb0, _c=QMetaObject::InvokeMetaMethod, _id=2, _a=0x55d374c253a8) at .moc/moc_qabstractscrollarea.cpp:106
        _t = 0x55d374a96eb0
#16 0x00007fae3180d895 in QMetaCallEvent::placeMetaCall (this=0x55d374c25360, object=0x55d374a96eb0) at kernel/qobject.cpp:621
No locals.
#17 0x00007fae3180e8e1 in QObject::event (this=0x55d374a96eb0, e=0x55d374c25360) at kernel/qobject.cpp:1339
        mce = 0x55d374c25360
        sender = {previous = 0x0, receiver = 0x55d374a96eb0, sender = 0x55d374abada0, signal = 11}
#18 0x00007fae32787b2c in QWidget::event (this=0x55d374a96eb0, event=0x55d374c25360) at kernel/qwidget.cpp:9062
        d = 0x55d374aa7a40
#19 0x00007fae3287cb65 in QFrame::event (this=0x55d374a96eb0, e=0x55d374c25360) at widgets/qframe.cpp:550
        result = false
#20 0x00007fae32880815 in QAbstractScrollArea::event (this=0x55d374a96eb0, e=0x55d374c25360) at widgets/qabstractscrollarea.cpp:1042
        d = 0x55d374aa7a40
#21 0x00007fae32bacd26 in QGraphicsView::event (this=0x55d374a96eb0, event=0x55d374c25360) at graphicsview/qgraphicsview.cpp:2839
        d = 0x55d374aa7a40
#22 0x00007fae327393b1 in QApplicationPrivate::notify_helper (this=0x55d3747315e0, receiver=0x55d374a96eb0, e=0x55d374c25360) at kernel/qapplication.cpp:3690
        consumed = false
        filtered = false
#23 0x00007fae327391b0 in QApplication::notify (this=0x7fff715e4670, receiver=0x55d374a96eb0, e=0x55d374c25360) at kernel/qapplication.cpp:3640
        d = 0x55d3747315e0
        __PRETTY_FUNCTION__ = "virtual bool QApplication::notify(QObject*, QEvent*)"
        res = false
#24 0x00007fae317c7e19 in QCoreApplication::notifyInternal2 (receiver=0x55d374a96eb0, event=0x55d374c25360) at kernel/qcoreapplication.cpp:1092
        selfRequired = true
        result = false
        cbdata = {0x55d374a96eb0, 0x55d374c25360, 0x7fff715e2b06}
        d = 0x55d374aa7a40
        threadData = 0x55d3747303c0
        scopeLevelCounter = {threadData = 0x55d3747303c0}
#25 0x00007fae317c8818 in QCoreApplication::sendEvent (receiver=0x55d374a96eb0, event=0x55d374c25360) at kernel/qcoreapplication.cpp:1487
No locals.
#26 0x00007fae317c9456 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x55d3747303c0) at kernel/qcoreapplication.cpp:1832
        e = 0x55d374c25360
        pe = @0x55d374ddcdb8: {receiver = 0x55d374a96eb0, event = 0x0, priority = 0}
        r = 0x55d374a96eb0
        relocker = {m_func = {__locker = @0x7fff715e2be0}, m_invoke = true}
        event_deleter = {d = 0x55d374c25360}
        __PRETTY_FUNCTION__ = "static void QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*)"
        locker = {_M_device = 0x55d3747303f0, _M_owns = false}
        startOffset = 0
        i = @0x55d3747303e4: 1441
        cleanup = {receiver = 0x0, event_type = 0, data = 0x55d3747303c0, exceptionCaught = true}
#27 0x00007fae317c8da0 in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1691
        data = 0x55d3747303c0
#28 0x00007fae3185e132 in postEventSourceDispatch (s=0x55d3747e4b90) at kernel/qeventdispatcher_glib.cpp:277
        source = 0x55d3747e4b90
#29 0x00007fae308049ee in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#30 0x00007fae30804c88 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#31 0x00007fae30804d1c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#32 0x00007fae3185e899 in QEventDispatcherGlib::processEvents (this=0x55d3747d91e0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
        d = 0x55d3747d3a90
        canWait = true
        savedFlags = {i = 36}
        result = false
#33 0x00007fae2dfc013e in QXcbGlibEventDispatcher::processEvents (this=0x55d3747d91e0, flags=...) at qxcbeventdispatcher.cpp:143
No locals.
#34 0x00007fae317c44cb in QEventLoop::processEvents (this=0x7fff715e2f30, flags=...) at kernel/qeventloop.cpp:138
        d = 0x55d374af9630
#35 0x00007fae317c4805 in QEventLoop::exec (this=0x7fff715e2f30, flags=...) at kernel/qeventloop.cpp:225
        d = 0x55d374af9630
        locker = {val = 94366680155320}
        __PRETTY_FUNCTION__ = "int QEventLoop::exec(QEventLoop::ProcessEventsFlags)"
        ref = {d = 0x55d374af9630, locker = @0x7fff715e2e88, exceptionCaught = true}
        app = 0x7fff715e4670
#36 0x00007fae329ecda5 in QDialog::exec (this=0x7fff715e2fd0) at dialogs/qdialog.cpp:601
        eventLoop = {<QObject> = {_vptr.QObject = 0x7fae31bbb520 <vtable for QEventLoop+16>, static staticMetaObject = {d = {superdata = {direct = 0x0}, stringdata = 0x7fae31a2a1a0 <qt_meta_stringdata_QObject>, data = 0x7fae31a2a2c0 <qt_meta_data_QObject>, static_metacall = 0x7fae31817b40 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x55d374af9630}, static staticQtMetaObject = {d = {superdata = {direct = 0x0}, stringdata = 0x7fae31a1b820 <qt_meta_stringdata_Qt>, data = 0x7fae31a27340 <qt_meta_data_Qt>, static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = {direct = 0x7fae31bb2ca0 <QObject::staticMetaObject>}, stringdata = 0x7fae31a12940 <qt_meta_stringdata_QEventLoop>, data = 0x7fae31a129a0 <qt_meta_data_QEventLoop>, static_metacall = 0x7fae317c4c06 <QEventLoop::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}
        d = 0x55d3747ffbf0
        __PRETTY_FUNCTION__ = "virtual int QDialog::exec()"
        deleteOnClose = false
        wasShowModal = false
        guard = {wp = {d = 0x55d374a630b0, value = 0x7fff715e2fd0}}
        res = 32767
#37 0x000055d373d82c7b in MainWindow::printPreview (this=0x7fff715e46a0) at ../qtbug20677/main.cpp:111
        printer = {<QPagedPaintDevice> = {<QPaintDevice> = {_vptr.QPaintDevice = 0x7fae32f711e8 <vtable for QPrinter+16>, painters = 0, reserved = 0x0}, d = 0x55d374a38780}, d_ptr = {d = 0x55d374a4a950}}
        preview = {<QDialog> = {<QWidget> = {<QObject> = {_vptr.QObject = 0x7fae32f73138 <vtable for QPrintPreviewDialog+16>, static staticMetaObject = {d = {superdata = {direct = 0x0}, stringdata = 0x7fae31a2a1a0 <qt_meta_stringdata_QObject>, data = 0x7fae31a2a2c0 <qt_meta_data_QObject>, static_metacall = 0x7fae31817b40 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x55d3747ffbf0}, static staticQtMetaObject = {d = {superdata = {direct = 0x0}, stringdata = 0x7fae31a1b820 <qt_meta_stringdata_Qt>, data = 0x7fae31a27340 <qt_meta_data_Qt>, static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}}, <QPaintDevice> = {_vptr.QPaintDevice = 0x7fae32f73310 <vtable for QPrintPreviewDialog+488>, painters = 0, reserved = 0x0}, static staticMetaObject = {d = {superdata = {direct = 0x7fae31bb2ca0 <QObject::staticMetaObject>}, stringdata = 0x7fae32c2a420 <qt_meta_stringdata_QWidget>, data = 0x7fae32c2b1c0 <qt_meta_data_QWidget>, static_metacall = 0x7fae3278fe4e <QWidget::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, data = 0x55d3747ffd08}, static staticMetaObject = {d = {superdata = {direct = 0x7fae32e99be0 <QWidget::staticMetaObject>}, stringdata = 0x7fae32cac280 <qt_meta_stringdata_QDialog>, data = 0x7fae32cac440 <qt_meta_data_QDialog>, static_metacall = 0x7fae329ef13a <QDialog::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = {direct = 0x7fae32eadb60 <QDialog::staticMetaObject>}, stringdata = 0x7fae32f4b320 <qt_meta_stringdata_QPrintPreviewDialog>, data = 0x7fae32f4b580 <qt_meta_data_QPrintPreviewDialog>, static_metacall = 0x7fae32f37166 <QPrintPreviewDialog::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}
#38 0x000055d373d831c6 in MainWindow::qt_static_metacall (_o=0x7fff715e46a0, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7fff715e31b0) at ./main.moc:167
        _t = 0x7fff715e46a0
#39 0x00007fae3181b8b6 in doActivate<false> (sender=0x55d3747f8190, signal_index=4, argv=0x7fff715e31b0) at kernel/qobject.cpp:3882
        method_relative = 0
        callFunction = 0x55d373d83190 <MainWindow::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>
        methodIndex = 0
        receiver = 0x7fff715e46a0
        td = 0x55d3747303c0
        receiverInSameThread = true
        senderData = {previous = 0x0, receiver = 0x7fff715e46a0, sender = 0x55d3747f8190, signal = 4}
        c = 0x55d3747f08b0
        connections = {d = 0x55d3747ea800}
        list = 0x55d3747e9cf0
        inSenderThread = true
        highestConnectionId = 4
        signalVector = 0x55d3747e9c90
        currentThreadId = 0x7fae2e6c4780
        __PRETTY_FUNCTION__ = "void doActivate(QObject*, int, void**) [with bool callbacks_enabled = false]"
        sp = 0x55d3747f0790
        signal_spy_set = 0x0
        empty_argv = {0x0}
        senderDeleted = false
#40 0x00007fae318151d3 in QMetaObject::activate (sender=0x55d3747f8190, m=0x7fae32e98820 <QAction::staticMetaObject>, local_signal_index=1, argv=0x7fff715e31b0) at kernel/qobject.cpp:3930
        signal_index = 4
#41 0x00007fae32727a07 in QAction::triggered (this=0x55d3747f8190, _t1=false) at .moc/moc_qaction.cpp:381
        _a = {0x0, 0x7fff715e31a4}
#42 0x00007fae3272690e in QAction::activate (this=0x55d3747f8190, event=QAction::Trigger) at kernel/qaction.cpp:1161
        guard = {wp = {d = 0x7fae28008770, value = 0x55d3747f8190}}
        d = 0x55d3747f0790
#43 0x00007fae32728553 in QAction::trigger (this=0x55d3747f8190) at ../../include/QtWidgets/../../src/widgets/kernel/qaction.h:187
No locals.
#44 0x00007fae329cb413 in QToolButton::nextCheckState (this=0x55d3747edca0) at widgets/qtoolbutton.cpp:986
        d = 0x55d3747eee20
#45 0x00007fae3288583a in QAbstractButtonPrivate::click (this=0x55d3747eee20) at widgets/qabstractbutton.cpp:398
        q = 0x55d3747edca0
        changeState = true
        guard = {wp = {d = 0x55d3747ed950, value = 0x55d3747edca0}}
#46 0x00007fae32886f85 in QAbstractButton::mouseReleaseEvent (this=0x55d3747edca0, e=0x7fff715e3b40) at widgets/qabstractbutton.cpp:1012
        d = 0x55d3747eee20
#47 0x00007fae329ca00d in QToolButton::mouseReleaseEvent (this=0x55d3747edca0, e=0x7fff715e3b40) at widgets/qtoolbutton.cpp:622
        d = 0x55d3747eee20
#48 0x00007fae32786336 in QWidget::event (this=0x55d3747edca0, event=0x7fff715e3b40) at kernel/qwidget.cpp:8627
        d = 0x55d3747eee20
#49 0x00007fae32886d96 in QAbstractButton::event (this=0x55d3747edca0, e=0x7fff715e3b40) at widgets/qabstractbutton.cpp:969
No locals.
#50 0x00007fae329cb4a0 in QToolButton::event (this=0x55d3747edca0, event=0x7fff715e3b40) at widgets/qtoolbutton.cpp:1002
No locals.
#51 0x00007fae327393b1 in QApplicationPrivate::notify_helper (this=0x55d3747315e0, receiver=0x55d3747edca0, e=0x7fff715e3b40) at kernel/qapplication.cpp:3690
        consumed = false
        filtered = false
#52 0x00007fae32736dee in QApplication::notify (this=0x7fff715e4670, receiver=0x55d3747edca0, e=0x7fff715e3b40) at kernel/qapplication.cpp:3140
        me = {<QInputEvent> = {<QEvent> = {_vptr.QEvent = 0x7fae3257a038 <vtable for QMouseEvent+16>, static staticMetaObject = {d = {superdata = {direct = 0x0}, stringdata = 0x7fae31a14620 <qt_meta_stringdata_QEvent>, data = 0x7fae31a160a0 <qt_meta_data_QEvent>, static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}, d = 0x0, t = 3, posted = 0, spont = 1, m_accept = 1, reserved = 3627}, modState = {i = 0}, ts = 24626548}, l = {xp = 41, yp = 11}, w = {xp = 54, yp = 35}, s = {xp = 54, yp = 64}, b = Qt::LeftButton, mouseState = {i = 0}, caps = 0, velocity = {v = {0, 0}}}
        w = 0x55d3747edca0
        mouse = 0x7fff715e3b40
        eventAccepted = true
        relpos = {xp = 41, yp = 11}
        pw = {wp = {d = 0x55d3747ed950, value = 0x55d3747edca0}}
        d = 0x55d3747315e0
        __PRETTY_FUNCTION__ = "virtual bool QApplication::notify(QObject*, QEvent*)"
        res = false
#53 0x00007fae317c7e19 in QCoreApplication::notifyInternal2 (receiver=0x55d3747edca0, event=0x7fff715e3b40) at kernel/qcoreapplication.cpp:1092
        selfRequired = true
        result = false
        cbdata = {0x55d3747edca0, 0x7fff715e3b40, 0x7fff715e38c6}
        d = 0x55d3747eee20
        threadData = 0x55d3747303c0
        scopeLevelCounter = {threadData = 0x55d3747303c0}
#54 0x00007fae317c8852 in QCoreApplication::sendSpontaneousEvent (receiver=0x55d3747edca0, event=0x7fff715e3b40) at kernel/qcoreapplication.cpp:1499
No locals.
#55 0x00007fae3273573d in QApplicationPrivate::sendMouseEvent (receiver=0x55d3747edca0, event=0x7fff715e3b40, alienWidget=0x55d3747edca0, nativeWidget=0x7fff715e46a0, buttonDown=0x7fae32ec79b0 <qt_button_down>, lastMouseReceiver=..., spontaneous=true, onlyDispatchEnterLeave=false) at kernel/qapplication.cpp:2626
        receiverGuard = {wp = {d = 0x55d3747ed950, value = 0x55d3747edca0}}
        nativeGuard = {wp = {d = 0x55d3747e7100, value = 0x7fff715e46a0}}
        alienGuard = {wp = {d = 0x55d3747ed950, value = 0x55d3747edca0}}
        activePopupWidget = {wp = {d = 0x0, value = 0x0}}
        graphicsWidget = false
        widgetUnderMouse = true
        wasLeaveAfterRelease = true
        result = true
#56 0x00007fae327b838c in QWidgetWindow::handleMouseEvent (this=0x55d3748ede80, event=0x7fff715e4190) at kernel/qwidgetwindow.cpp:665
        translated = {<QInputEvent> = {<QEvent> = {_vptr.QEvent = 0x7fae3257a038 <vtable for QMouseEvent+16>, static staticMetaObject = {d = {superdata = {direct = 0x0}, stringdata = 0x7fae31a14620 <qt_meta_stringdata_QEvent>, data = 0x7fae31a160a0 <qt_meta_data_QEvent>, static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}, d = 0x0, t = 3, posted = 0, spont = 1, m_accept = 1, reserved = 3627}, modState = {i = 0}, ts = 24626548}, l = {xp = 41, yp = 11}, w = {xp = 54, yp = 35}, s = {xp = 54, yp = 64}, b = Qt::LeftButton, mouseState = {i = 0}, caps = 0, velocity = {v = {0, 0}}}
        contextMenuTrigger = QEvent::MouseButtonPress
        widget = 0x55d3747edca0
        mapped = {xp = 41, yp = 11}
        initialPress = false
        receiver = 0x55d3747edca0
#57 0x00007fae327b6c24 in QWidgetWindow::event (this=0x55d3748ede80, event=0x7fff715e4190) at kernel/qwidgetwindow.cpp:287
No locals.
#58 0x00007fae327393b1 in QApplicationPrivate::notify_helper (this=0x55d3747315e0, receiver=0x55d3748ede80, e=0x7fff715e4190) at kernel/qapplication.cpp:3690
        consumed = false
        filtered = false
#59 0x00007fae327366e8 in QApplication::notify (this=0x7fff715e4670, receiver=0x55d3748ede80, e=0x7fff715e4190) at kernel/qapplication.cpp:3036
        d = 0x55d3747315e0
        __PRETTY_FUNCTION__ = "virtual bool QApplication::notify(QObject*, QEvent*)"
        res = false
#60 0x00007fae317c7e19 in QCoreApplication::notifyInternal2 (receiver=0x55d3748ede80, event=0x7fff715e4190) at kernel/qcoreapplication.cpp:1092
        selfRequired = true
        result = false
        cbdata = {0x55d3748ede80, 0x7fff715e4190, 0x7fff715e4016}
        d = 0x55d374837e20
        threadData = 0x55d3747303c0
        scopeLevelCounter = {threadData = 0x55d3747303c0}
#61 0x00007fae317c8852 in QCoreApplication::sendSpontaneousEvent (receiver=0x55d3748ede80, event=0x7fff715e4190) at kernel/qcoreapplication.cpp:1499
No locals.
#62 0x00007fae31d1d823 in QGuiApplicationPrivate::processMouseEvent (e=0x55d374a387b0) at kernel/qguiapplication.cpp:2174
        type = QEvent::MouseButtonRelease
        button = Qt::LeftButton
        window = 0x55d3748ede80
        positionChanged = false
        mouseMove = false
        mousePress = false
        localPoint = {xp = 54, yp = 35}
        globalPoint = {xp = 54, yp = 64}
        doubleClick = false
        ev = {<QInputEvent> = {<QEvent> = {_vptr.QEvent = 0x7fae3257a038 <vtable for QMouseEvent+16>, static staticMetaObject = {d = {superdata = {direct = 0x0}, stringdata = 0x7fae31a14620 <qt_meta_stringdata_QEvent>, data = 0x7fae31a160a0 <qt_meta_data_QEvent>, static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}, d = 0x0, t = 3, posted = 0, spont = 1, m_accept = 1, reserved = 3627}, modState = {i = 0}, ts = 24626548}, l = {xp = 54, yp = 35}, w = {xp = 54, yp = 35}, s = {xp = 54, yp = 64}, b = Qt::LeftButton, mouseState = {i = 0}, caps = 0, velocity = {v = {0, 0}}}
#63 0x00007fae31d1ca6a in QGuiApplicationPrivate::processWindowSystemEvent (e=0x55d374a387b0) at kernel/qguiapplication.cpp:1909
        __PRETTY_FUNCTION__ = "static void QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*)"
#64 0x00007fae31cfb8f0 in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:1152
        event = 0x55d374a387b0
        nevents = 1
#65 0x00007fae2dfbff02 in xcbSourceDispatch (source=0x55d3747e4da0) at qxcbeventdispatcher.cpp:105
        xcbEventSource = 0x55d3747e4da0
        flags = {i = 36}
#66 0x00007fae308049ee in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#67 0x00007fae30804c88 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#68 0x00007fae30804d1c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#69 0x00007fae3185e899 in QEventDispatcherGlib::processEvents (this=0x55d3747d91e0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
        d = 0x55d3747d3a90
        canWait = true
        savedFlags = {i = 0}
        result = false
#70 0x00007fae2dfc013e in QXcbGlibEventDispatcher::processEvents (this=0x55d3747d91e0, flags=...) at qxcbeventdispatcher.cpp:143
No locals.
#71 0x00007fae317c44cb in QEventLoop::processEvents (this=0x7fff715e45e0, flags=...) at kernel/qeventloop.cpp:138
        d = 0x55d3747fe680
#72 0x00007fae317c4805 in QEventLoop::exec (this=0x7fff715e45e0, flags=...) at kernel/qeventloop.cpp:225
        d = 0x55d3747fe680
        locker = {val = 94366680155320}
        __PRETTY_FUNCTION__ = "int QEventLoop::exec(QEventLoop::ProcessEventsFlags)"
        ref = {d = 0x55d3747fe680, locker = @0x7fff715e4568, exceptionCaught = true}
        app = 0x7fff715e4670
#73 0x00007fae317c866a in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1400
        threadData = 0x55d3747303c0
        __PRETTY_FUNCTION__ = "static int QCoreApplication::exec()"
        eventLoop = {<QObject> = {_vptr.QObject = 0x7fae31bbb520 <vtable for QEventLoop+16>, static staticMetaObject = {d = {superdata = {direct = 0x0}, stringdata = 0x7fae31a2a1a0 <qt_meta_stringdata_QObject>, data = 0x7fae31a2a2c0 <qt_meta_data_QObject>, static_metacall = 0x7fae31817b40 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x55d3747fe680}, static staticQtMetaObject = {d = {superdata = {direct = 0x0}, stringdata = 0x7fae31a1b820 <qt_meta_stringdata_Qt>, data = 0x7fae31a27340 <qt_meta_data_Qt>, static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = {direct = 0x7fae31bb2ca0 <QObject::staticMetaObject>}, stringdata = 0x7fae31a12940 <qt_meta_stringdata_QEventLoop>, data = 0x7fae31a129a0 <qt_meta_data_QEventLoop>, static_metacall = 0x7fae317c4c06 <QEventLoop::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}
        returnCode = 32513
#74 0x000055d373d82f25 in main (argc=1, argv=0x7fff715e47d8) at ../qtbug20677/main.cpp:132
        args = {<QList<QString>> = {<QListSpecialMethods<QString>> = {<No data fields>}, {p = {static shared_null = {ref = {atomic = {_q_value = {<std::__atomic_base<int>> = {static _S_alignment = 4, _M_i = -1}, <No data fields>}}}, alloc = 0, begin = 0, end = 0, array = {0x0}}, d = 0x7fae3190ca30 <QListData::shared_null>}, d = 0x7fae3190ca30 <QListData::shared_null>}}, <No data fields>}
        app = {<QGuiApplication> = {<QCoreApplication> = {<QObject> = {_vptr.QObject = 0x7fae32e98a40 <vtable for QApplication+16>, static staticMetaObject = {d = {superdata = {direct = 0x0}, stringdata = 0x7fae31a2a1a0 <qt_meta_stringdata_QObject>, data = 0x7fae31a2a2c0 <qt_meta_data_QObject>, static_metacall = 0x7fae31817b40 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x55d3747315e0}, static staticQtMetaObject = {d = {superdata = {direct = 0x0}, stringdata = 0x7fae31a1b820 <qt_meta_stringdata_Qt>, data = 0x7fae31a27340 <qt_meta_data_Qt>, static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = {direct = 0x7fae31bb2ca0 <QObject::staticMetaObject>}, stringdata = 0x7fae31a138a0 <qt_meta_stringdata_QCoreApplication>, data = 0x7fae31a13ac0 <qt_meta_data_QCoreApplication>, static_metacall = 0x7fae317cc286 <QCoreApplication::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, static self = 0x7fff715e4670}, static staticMetaObject = {d = {superdata = {direct = 0x7fae31bbb5c0 <QCoreApplication::staticMetaObject>}, stringdata = 0x7fae322ae440 <qt_meta_stringdata_QGuiApplication>, data = 0x7fae322aea20 <qt_meta_data_QGuiApplication>, static_metacall = 0x7fae31d24270 <QGuiApplication::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = {direct = 0x7fae32579720 <QGuiApplication::staticMetaObject>}, stringdata = 0x7fae32c1dd20 <qt_meta_stringdata_QApplication>, data = 0x7fae32c1e040 <qt_meta_data_QApplication>, static_metacall = 0x7fae3273b67a <QApplication::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}
        w = {<QMainWindow> = {<QWidget> = {<QObject> = {_vptr.QObject = 0x55d373d89600 <vtable for MainWindow+16>, static staticMetaObject = {d = {superdata = {direct = 0x0}, stringdata = 0x7fae31a2a1a0 <qt_meta_stringdata_QObject>, data = 0x7fae31a2a2c0 <qt_meta_data_QObject>, static_metacall = 0x7fae31817b40 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x55d3747e7660}, static staticQtMetaObject = {d = {superdata = {direct = 0x0}, stringdata = 0x7fae31a1b820 <qt_meta_stringdata_Qt>, data = 0x7fae31a27340 <qt_meta_data_Qt>, static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}}, <QPaintDevice> = {_vptr.QPaintDevice = 0x55d373d897b8 <vtable for MainWindow+456>, painters = 0, reserved = 0x0}, static staticMetaObject = {d = {superdata = {direct = 0x7fae31bb2ca0 <QObject::staticMetaObject>}, stringdata = 0x7fae32c2a420 <qt_meta_stringdata_QWidget>, data = 0x7fae32c2b1c0 <qt_meta_data_QWidget>, static_metacall = 0x7fae3278fe4e <QWidget::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, data = 0x55d3747e7778}, static staticMetaObject = {d = {superdata = {direct = 0x7fae32e99be0 <QWidget::staticMetaObject>}, stringdata = 0x7fae32c7b080 <qt_meta_stringdata_QMainWindow>, data = 0x7fae32c7b520 <qt_meta_data_QMainWindow>, static_metacall = 0x7fae3290b704 <QMainWindow::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x7fae32ea3720 <qt_meta_extradata_QMainWindow>, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = {direct = 0x7fae32ea3740 <QMainWindow::staticMetaObject>}, stringdata = 0x55d373d85f20 <qt_meta_stringdata_MainWindow>, data = 0x55d373d85fa0 <qt_meta_data_MainWindow>, static_metacall = 0x55d373d83190 <MainWindow::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, m_pe = 0x55d3747f8d70}
        t = {static null = {<No data fields>}, d = 0x55d374922df0}
        __PRETTY_FUNCTION__ = "int main(int, char**)"