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Assertion failure in ImageCanvas::updateSelectionArea() #50

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mitchcurtis opened this issue Apr 2, 2018 · 0 comments
Closed

Assertion failure in ImageCanvas::updateSelectionArea() #50

mitchcurtis opened this issue Apr 2, 2018 · 0 comments
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@mitchcurtis
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It's happened a couple of times now, but is hard to reproduce:

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x00007fff7df27e3e __pthread_kill + 10
1 libsystem_pthread.dylib 0x00007fff7e066150 pthread_kill + 333
2 libsystem_c.dylib 0x00007fff7de84312 abort + 127
3 org.qt-project.QtCore 0x000000010cae97d9 qt_message_fatal(QtMsgType, QMessageLogContext const&, QString const&) + 9
4 org.qt-project.QtCore 0x000000010caeafbf QMessageLogger::fatal(char const*, ...) const + 213
5 org.qt-project.QtCore 0x000000010cae59ec qt_assert(char const*, char const*, int) + 71
6 com.yourcompany.slate 0x000000010bd3490e ImageCanvas::updateSelectionArea() + 62 (imagecanvas.cpp:1211)
7 com.yourcompany.slate 0x000000010bd39e76 ImageCanvas::mouseMoveEvent(QMouseEvent*) + 422 (imagecanvas.cpp:2175)
8 org.qt-project.QtQuick 0x000000010d1ed2dd QQuickItem::event(QEvent*) + 173
9 org.qt-project.QtWidgets 0x000000010bf3a62d QApplicationPrivate::notify_helper(QObject*, QEvent*) + 269
10 org.qt-project.QtWidgets 0x000000010bf3b9ca QApplication::notify(QObject*, QEvent*) + 362
11 org.qt-project.QtCore 0x000000010ccb0048 QCoreApplication::notifyInternal2(QObject*, QEvent*) + 168
12 org.qt-project.QtQuick 0x000000010d203482 QQuickWindowPrivate::deliverMouseEvent(QQuickPointerMouseEvent*) + 578
13 org.qt-project.QtQuick 0x000000010d2051e2 QQuickWindowPrivate::deliverPointerEvent(QQuickPointerEvent*) + 98
14 org.qt-project.QtQuick 0x000000010d205e7f QQuickWindowPrivate::handleMouseEvent(QMouseEvent*) + 1743
15 org.qt-project.QtGui 0x000000010c58ec25 QWindow::event(QEvent*) + 261
16 org.qt-project.QtQuick 0x000000010d2019c9 QQuickWindow::event(QEvent*) + 265
17 org.qt-project.QtWidgets 0x000000010bf3a62d QApplicationPrivate::notify_helper(QObject*, QEvent*) + 269
18 org.qt-project.QtWidgets 0x000000010bf3b9ca QApplication::notify(QObject*, QEvent*) + 362
19 org.qt-project.QtCore 0x000000010ccb0048 QCoreApplication::notifyInternal2(QObject*, QEvent*) + 168
20 org.qt-project.QtGui 0x000000010c57fd3e QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) + 3422
21 org.qt-project.QtGui 0x000000010c565adb QWindowSystemInterface::sendWindowSystemEvents(QFlagsQEventLoop::ProcessEventsFlag) + 171
22 libqcocoa.dylib 0x0000000110831bce QCocoaEventDispatcherPrivate::processPostedEvents() + 190
23 libqcocoa.dylib 0x0000000110832491 QCocoaEventDispatcherPrivate::postedEventsSourceCallback(void*) + 33
24 com.apple.CoreFoundation 0x00007fff564df721 CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION + 17
25 com.apple.CoreFoundation 0x00007fff565990ac __CFRunLoopDoSource0 + 108
26 com.apple.CoreFoundation 0x00007fff564c2260 __CFRunLoopDoSources0 + 208
27 com.apple.CoreFoundation 0x00007fff564c16dd __CFRunLoopRun + 1293
28 com.apple.CoreFoundation 0x00007fff564c0f43 CFRunLoopRunSpecific + 483
29 com.apple.HIToolbox 0x00007fff557d8e26 RunCurrentEventLoopInMode + 286
30 com.apple.HIToolbox 0x00007fff557d8a9f ReceiveNextEventCommon + 366
31 com.apple.HIToolbox 0x00007fff557d8914 _BlockUntilNextEventMatchingListInModeWithFilter + 64
32 com.apple.AppKit 0x00007fff53aa3f5f _DPSNextEvent + 2085
33 com.apple.AppKit 0x00007fff54239b4c -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 3044
34 com.apple.AppKit 0x00007fff53a98d6d -[NSApplication run] + 764
35 libqcocoa.dylib 0x000000011083127d QCocoaEventDispatcher::processEvents(QFlagsQEventLoop::ProcessEventsFlag) + 2381
36 org.qt-project.QtCore 0x000000010ccabbce QEventLoop::exec(QFlagsQEventLoop::ProcessEventsFlag) + 398
37 org.qt-project.QtCore 0x000000010ccb0741 QCoreApplication::exec() + 369
38 com.yourcompany.slate 0x000000010bd0d10e Application::run() + 30 (application.cpp:140)
39 com.yourcompany.slate 0x000000010bd8afa0 main + 112 (main.cpp:6)
40 libdyld.dylib 0x00007fff7ddd8115 start + 1
mitchcurtis added a commit that referenced this issue Jun 18, 2021
@mitchcurtis
Check for null project in hoverLeaveEvent
0e2f63e 
Otherwise we get a crash when running the following tests:

   saveTilesetProject saveAsAndLoadTilesetProject

AddressSanitizer:DEADLYSIGNAL
=================================================================
==146641==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000028 (pc 0x7efcf80e5d5f bp 0x7ffed1dae970 sp 0x7ffed1dae960 T0)
==146641==The signal is caused by a READ memory access.
==146641==Hint: address points to the zero page.
    #0 0x7efcf80e5d5e in Project::hasLoaded() const /home/mitch/dev/slate/lib/project.cpp:118
    #1 0x7efcf8076734 in ImageCanvas::hoverLeaveEvent(QHoverEvent*) /home/mitch/dev/slate/lib/imagecanvas.cpp:3229
    #2 0x7efcf8181340 in TileCanvas::hoverLeaveEvent(QHoverEvent*) /home/mitch/dev/slate/lib/tilecanvas.cpp:576
    #3 0x7efcf4c7dcd6 in QQuickItem::event(QEvent*) /home/mitch/dev/qt-dev/qtdeclarative/src/quick/items/qquickitem.cpp:8450
    #4 0x7efcf806fd04 in ImageCanvas::event(QEvent*) /home/mitch/dev/slate/lib/imagecanvas.cpp:2872
    #5 0x7efcf671794c in QApplicationPrivate::notify_helper(QObject*, QEvent*) /home/mitch/dev/qt-dev/qtbase/src/widgets/kernel/qapplication.cpp:3396
    #6 0x7efcf67130ca in QApplication::notify(QObject*, QEvent*) /home/mitch/dev/qt-dev/qtbase/src/widgets/kernel/qapplication.cpp:2758
    #7 0x7efceffda779 in QCoreApplication::notifyInternal2(QObject*, QEvent*) /home/mitch/dev/qt-dev/qtbase/src/corelib/kernel/qcoreapplication.cpp:1061
    #8 0x7efceffdbf2f in QCoreApplication::sendEvent(QObject*, QEvent*) /home/mitch/dev/qt-dev/qtbase/src/corelib/kernel/qcoreapplication.cpp:1469
    #9 0x7efcf529c40d in QQuickDeliveryAgentPrivate::sendHoverEvent(QEvent::Type, QQuickItem*, QPointF const&, QPointF const&, QFlags<Qt::KeyboardModifier>, unsigned long) /home/mitch/dev/qt-dev/qtdeclarative/src/quick/util/qquickdeliveryagent.cpp:947
    #10 0x7efcf529dfc6 in QQuickDeliveryAgentPrivate::deliverHoverEvent(QQuickItem*, QPointF const&, QPointF const&, QFlags<Qt::KeyboardModifier>, unsigned long, bool&) /home/mitch/dev/qt-dev/qtdeclarative/src/quick/util/qquickdeliveryagent.cpp:1008
    #11 0x7efcf529d706 in QQuickDeliveryAgentPrivate::deliverHoverEvent(QQuickItem*, QPointF const&, QPointF const&, QFlags<Qt::KeyboardModifier>, unsigned long, bool&) /home/mitch/dev/qt-dev/qtdeclarative/src/quick/util/qquickdeliveryagent.cpp:977
    #12 0x7efcf529d706 in QQuickDeliveryAgentPrivate::deliverHoverEvent(QQuickItem*, QPointF const&, QPointF const&, QFlags<Qt::KeyboardModifier>, unsigned long, bool&) /home/mitch/dev/qt-dev/qtdeclarative/src/quick/util/qquickdeliveryagent.cpp:977
    #13 0x7efcf529d706 in QQuickDeliveryAgentPrivate::deliverHoverEvent(QQuickItem*, QPointF const&, QPointF const&, QFlags<Qt::KeyboardModifier>, unsigned long, bool&) /home/mitch/dev/qt-dev/qtdeclarative/src/quick/util/qquickdeliveryagent.cpp:977
    #14 0x7efcf529d706 in QQuickDeliveryAgentPrivate::deliverHoverEvent(QQuickItem*, QPointF const&, QPointF const&, QFlags<Qt::KeyboardModifier>, unsigned long, bool&) /home/mitch/dev/qt-dev/qtdeclarative/src/quick/util/qquickdeliveryagent.cpp:977
    #15 0x7efcf529d706 in QQuickDeliveryAgentPrivate::deliverHoverEvent(QQuickItem*, QPointF const&, QPointF const&, QFlags<Qt::KeyboardModifier>, unsigned long, bool&) /home/mitch/dev/qt-dev/qtdeclarative/src/quick/util/qquickdeliveryagent.cpp:977
    #16 0x7efcf529d706 in QQuickDeliveryAgentPrivate::deliverHoverEvent(QQuickItem*, QPointF const&, QPointF const&, QFlags<Qt::KeyboardModifier>, unsigned long, bool&) /home/mitch/dev/qt-dev/qtdeclarative/src/quick/util/qquickdeliveryagent.cpp:977
    #17 0x7efcf52a41f7 in QQuickDeliveryAgentPrivate::flushFrameSynchronousEvents(QQuickWindow*) /home/mitch/dev/qt-dev/qtdeclarative/src/quick/util/qquickdeliveryagent.cpp:1427
    #18 0x7efcf4f5ad86 in QQuickWindowPrivate::flushFrameSynchronousEvents() /home/mitch/dev/qt-dev/qtdeclarative/src/quick/items/qquickwindow.cpp:1610
    #19 0x7efcf56f8952 in QSGThreadedRenderLoop::polishAndSync(QSGThreadedRenderLoop::Window*, bool) /home/mitch/dev/qt-dev/qtdeclarative/src/quick/scenegraph/qsgthreadedrenderloop.cpp:1516
    #20 0x7efcf56f66fa in QSGThreadedRenderLoop::handleUpdateRequest(QQuickWindow*) /home/mitch/dev/qt-dev/qtdeclarative/src/quick/scenegraph/qsgthreadedrenderloop.cpp:1383
    #21 0x7efcf4f5a6f0 in QQuickWindow::event(QEvent*) /home/mitch/dev/qt-dev/qtdeclarative/src/quick/items/qquickwindow.cpp:1502
    #22 0x7efcf671794c in QApplicationPrivate::notify_helper(QObject*, QEvent*) /home/mitch/dev/qt-dev/qtbase/src/widgets/kernel/qapplication.cpp:3396
    #23 0x7efcf67130ca in QApplication::notify(QObject*, QEvent*) /home/mitch/dev/qt-dev/qtbase/src/widgets/kernel/qapplication.cpp:2758
    #24 0x7efceffda779 in QCoreApplication::notifyInternal2(QObject*, QEvent*) /home/mitch/dev/qt-dev/qtbase/src/corelib/kernel/qcoreapplication.cpp:1061
    #25 0x7efceffdbf2f in QCoreApplication::sendEvent(QObject*, QEvent*) /home/mitch/dev/qt-dev/qtbase/src/corelib/kernel/qcoreapplication.cpp:1469
    #26 0x7efcf161ec36 in QPlatformWindow::deliverUpdateRequest() /home/mitch/dev/qt-dev/qtbase/src/gui/kernel/qplatformwindow.cpp:810
    #27 0x7efcf161c4af in QPlatformWindow::windowEvent(QEvent*) /home/mitch/dev/qt-dev/qtbase/src/gui/kernel/qplatformwindow.cpp:490
    #28 0x7efce8271187 in QXcbWindow::windowEvent(QEvent*) /home/mitch/dev/qt-dev/qtbase/src/plugins/platforms/xcb/qxcbwindow.cpp:2313
    #29 0x7efcf1547c48 in QGuiApplicationPrivate::sendQWindowEventToQPlatformWindow(QWindow*, QEvent*) /home/mitch/dev/qt-dev/qtbase/src/gui/kernel/qguiapplication.cpp:1997
    #30 0x7efcf6712bdb in QApplication::notify(QObject*, QEvent*) /home/mitch/dev/qt-dev/qtbase/src/widgets/kernel/qapplication.cpp:2660
    #31 0x7efceffda779 in QCoreApplication::notifyInternal2(QObject*, QEvent*) /home/mitch/dev/qt-dev/qtbase/src/corelib/kernel/qcoreapplication.cpp:1061
    #32 0x7efceffdbf2f in QCoreApplication::sendEvent(QObject*, QEvent*) /home/mitch/dev/qt-dev/qtbase/src/corelib/kernel/qcoreapplication.cpp:1469
    #33 0x7efcf05690eb in QTimerInfoList::activateTimers() /home/mitch/dev/qt-dev/qtbase/src/corelib/kernel/qtimerinfo_unix.cpp:639
    #34 0x7efcf08563c7 in timerSourceDispatch /home/mitch/dev/qt-dev/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:185
    #35 0x7efcee59f17c in g_main_context_dispatch (/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x5217c)
    #36 0x7efcee59f3ff  (/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x523ff)
    #37 0x7efcee59f4a2 in g_main_context_iteration (/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x524a2)
    #38 0x7efcf0857faa in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) /home/mitch/dev/qt-dev/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:429
    #39 0x7efce81dd296 in QXcbGlibEventDispatcher::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) /home/mitch/dev/qt-dev/qtbase/src/plugins/platforms/xcb/qxcbeventdispatcher.cpp:132
    #40 0x7efceffdb6b2 in QCoreApplication::processEvents(QFlags<QEventLoop::ProcessEventsFlag>, int) /home/mitch/dev/qt-dev/qtbase/src/corelib/kernel/qcoreapplication.cpp:1321
    #41 0x7efcf01708fe in QTest::qWait(int) /home/mitch/dev/qt-dev/qtbase/src/corelib/kernel/qtestsupport_core.cpp:119
    #42 0x563b462ffd0c in TestHelper::updateVariables(bool, Project::Type) /home/mitch/dev/slate/tests/shared/testhelper.cpp:2447
    #43 0x563b462f142d in TestHelper::loadProject(QUrl const&, QRegularExpression const&) /home/mitch/dev/slate/tests/shared/testhelper.cpp:2393
    #44 0x563b45f75772 in tst_App::saveAsAndLoadTilesetProject() /home/mitch/dev/slate/tests/auto/tst_app.cpp:456
    #45 0x563b460ba5fe in tst_App::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) /home/mitch/dev/slate-qt_dev_debug-Debug/Debug_qt_dev_d_9f073821014d7ede/test-app.99bdad93/qt.headers/tst_app.moc:641
    #46 0x7efcf0024842 in QMetaMethod::invoke(QObject*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) const /home/mitch/dev/qt-dev/qtbase/src/corelib/kernel/qmetaobject.cpp:2384
    #47 0x7efcf84940af in QMetaMethod::invoke(QObject*, Qt::ConnectionType, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) const /home/mitch/dev/qt-dev/qtbase/src/corelib/kernel/qmetaobject.h:126
    #48 0x7efcf847e7e9 in QTest::TestMethods::invokeTestOnData(int) const /home/mitch/dev/qt-dev/qtbase/src/testlib/qtestcase.cpp:941
    #49 0x7efcf84809c3 in QTest::TestMethods::invokeTest(int, char const*, QTest::WatchDog*) const /home/mitch/dev/qt-dev/qtbase/src/testlib/qtestcase.cpp:1173
    #50 0x7efcf8483f1a in QTest::TestMethods::invokeTests(QObject*) const /home/mitch/dev/qt-dev/qtbase/src/testlib/qtestcase.cpp:1516
    #51 0x7efcf84854eb in QTest::qRun() /home/mitch/dev/qt-dev/qtbase/src/testlib/qtestcase.cpp:1943
    #52 0x7efcf84848e4 in QTest::qExec(QObject*, int, char**) /home/mitch/dev/qt-dev/qtbase/src/testlib/qtestcase.cpp:1851
    #53 0x563b460ba418 in main /home/mitch/dev/slate/tests/auto/tst_app.cpp:6856
    #54 0x7efcef62e0b2 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x270b2)
    #55 0x563b45f531dd in _start (/home/mitch/dev/slate-qt_dev_debug-Debug/Debug_qt_dev_d_9f073821014d7ede/install-root/usr/local/test-app+0x631dd)
mitchcurtis added a commit that referenced this issue Jun 19, 2021
@mitchcurtis
Check for null project in hoverLeaveEvent
676db77 
Otherwise we get a crash when running the following tests:

   saveTilesetProject saveAsAndLoadTilesetProject

AddressSanitizer:DEADLYSIGNAL
=================================================================
==146641==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000028 (pc 0x7efcf80e5d5f bp 0x7ffed1dae970 sp 0x7ffed1dae960 T0)
==146641==The signal is caused by a READ memory access.
==146641==Hint: address points to the zero page.
    #0 0x7efcf80e5d5e in Project::hasLoaded() const /home/mitch/dev/slate/lib/project.cpp:118
    #1 0x7efcf8076734 in ImageCanvas::hoverLeaveEvent(QHoverEvent*) /home/mitch/dev/slate/lib/imagecanvas.cpp:3229
    #2 0x7efcf8181340 in TileCanvas::hoverLeaveEvent(QHoverEvent*) /home/mitch/dev/slate/lib/tilecanvas.cpp:576
    #3 0x7efcf4c7dcd6 in QQuickItem::event(QEvent*) /home/mitch/dev/qt-dev/qtdeclarative/src/quick/items/qquickitem.cpp:8450
    #4 0x7efcf806fd04 in ImageCanvas::event(QEvent*) /home/mitch/dev/slate/lib/imagecanvas.cpp:2872
    #5 0x7efcf671794c in QApplicationPrivate::notify_helper(QObject*, QEvent*) /home/mitch/dev/qt-dev/qtbase/src/widgets/kernel/qapplication.cpp:3396
    #6 0x7efcf67130ca in QApplication::notify(QObject*, QEvent*) /home/mitch/dev/qt-dev/qtbase/src/widgets/kernel/qapplication.cpp:2758
    #7 0x7efceffda779 in QCoreApplication::notifyInternal2(QObject*, QEvent*) /home/mitch/dev/qt-dev/qtbase/src/corelib/kernel/qcoreapplication.cpp:1061
    #8 0x7efceffdbf2f in QCoreApplication::sendEvent(QObject*, QEvent*) /home/mitch/dev/qt-dev/qtbase/src/corelib/kernel/qcoreapplication.cpp:1469
    #9 0x7efcf529c40d in QQuickDeliveryAgentPrivate::sendHoverEvent(QEvent::Type, QQuickItem*, QPointF const&, QPointF const&, QFlags<Qt::KeyboardModifier>, unsigned long) /home/mitch/dev/qt-dev/qtdeclarative/src/quick/util/qquickdeliveryagent.cpp:947
    #10 0x7efcf529dfc6 in QQuickDeliveryAgentPrivate::deliverHoverEvent(QQuickItem*, QPointF const&, QPointF const&, QFlags<Qt::KeyboardModifier>, unsigned long, bool&) /home/mitch/dev/qt-dev/qtdeclarative/src/quick/util/qquickdeliveryagent.cpp:1008
    #11 0x7efcf529d706 in QQuickDeliveryAgentPrivate::deliverHoverEvent(QQuickItem*, QPointF const&, QPointF const&, QFlags<Qt::KeyboardModifier>, unsigned long, bool&) /home/mitch/dev/qt-dev/qtdeclarative/src/quick/util/qquickdeliveryagent.cpp:977
    #12 0x7efcf529d706 in QQuickDeliveryAgentPrivate::deliverHoverEvent(QQuickItem*, QPointF const&, QPointF const&, QFlags<Qt::KeyboardModifier>, unsigned long, bool&) /home/mitch/dev/qt-dev/qtdeclarative/src/quick/util/qquickdeliveryagent.cpp:977
    #13 0x7efcf529d706 in QQuickDeliveryAgentPrivate::deliverHoverEvent(QQuickItem*, QPointF const&, QPointF const&, QFlags<Qt::KeyboardModifier>, unsigned long, bool&) /home/mitch/dev/qt-dev/qtdeclarative/src/quick/util/qquickdeliveryagent.cpp:977
    #14 0x7efcf529d706 in QQuickDeliveryAgentPrivate::deliverHoverEvent(QQuickItem*, QPointF const&, QPointF const&, QFlags<Qt::KeyboardModifier>, unsigned long, bool&) /home/mitch/dev/qt-dev/qtdeclarative/src/quick/util/qquickdeliveryagent.cpp:977
    #15 0x7efcf529d706 in QQuickDeliveryAgentPrivate::deliverHoverEvent(QQuickItem*, QPointF const&, QPointF const&, QFlags<Qt::KeyboardModifier>, unsigned long, bool&) /home/mitch/dev/qt-dev/qtdeclarative/src/quick/util/qquickdeliveryagent.cpp:977
    #16 0x7efcf529d706 in QQuickDeliveryAgentPrivate::deliverHoverEvent(QQuickItem*, QPointF const&, QPointF const&, QFlags<Qt::KeyboardModifier>, unsigned long, bool&) /home/mitch/dev/qt-dev/qtdeclarative/src/quick/util/qquickdeliveryagent.cpp:977
    #17 0x7efcf52a41f7 in QQuickDeliveryAgentPrivate::flushFrameSynchronousEvents(QQuickWindow*) /home/mitch/dev/qt-dev/qtdeclarative/src/quick/util/qquickdeliveryagent.cpp:1427
    #18 0x7efcf4f5ad86 in QQuickWindowPrivate::flushFrameSynchronousEvents() /home/mitch/dev/qt-dev/qtdeclarative/src/quick/items/qquickwindow.cpp:1610
    #19 0x7efcf56f8952 in QSGThreadedRenderLoop::polishAndSync(QSGThreadedRenderLoop::Window*, bool) /home/mitch/dev/qt-dev/qtdeclarative/src/quick/scenegraph/qsgthreadedrenderloop.cpp:1516
    #20 0x7efcf56f66fa in QSGThreadedRenderLoop::handleUpdateRequest(QQuickWindow*) /home/mitch/dev/qt-dev/qtdeclarative/src/quick/scenegraph/qsgthreadedrenderloop.cpp:1383
    #21 0x7efcf4f5a6f0 in QQuickWindow::event(QEvent*) /home/mitch/dev/qt-dev/qtdeclarative/src/quick/items/qquickwindow.cpp:1502
    #22 0x7efcf671794c in QApplicationPrivate::notify_helper(QObject*, QEvent*) /home/mitch/dev/qt-dev/qtbase/src/widgets/kernel/qapplication.cpp:3396
    #23 0x7efcf67130ca in QApplication::notify(QObject*, QEvent*) /home/mitch/dev/qt-dev/qtbase/src/widgets/kernel/qapplication.cpp:2758
    #24 0x7efceffda779 in QCoreApplication::notifyInternal2(QObject*, QEvent*) /home/mitch/dev/qt-dev/qtbase/src/corelib/kernel/qcoreapplication.cpp:1061
    #25 0x7efceffdbf2f in QCoreApplication::sendEvent(QObject*, QEvent*) /home/mitch/dev/qt-dev/qtbase/src/corelib/kernel/qcoreapplication.cpp:1469
    #26 0x7efcf161ec36 in QPlatformWindow::deliverUpdateRequest() /home/mitch/dev/qt-dev/qtbase/src/gui/kernel/qplatformwindow.cpp:810
    #27 0x7efcf161c4af in QPlatformWindow::windowEvent(QEvent*) /home/mitch/dev/qt-dev/qtbase/src/gui/kernel/qplatformwindow.cpp:490
    #28 0x7efce8271187 in QXcbWindow::windowEvent(QEvent*) /home/mitch/dev/qt-dev/qtbase/src/plugins/platforms/xcb/qxcbwindow.cpp:2313
    #29 0x7efcf1547c48 in QGuiApplicationPrivate::sendQWindowEventToQPlatformWindow(QWindow*, QEvent*) /home/mitch/dev/qt-dev/qtbase/src/gui/kernel/qguiapplication.cpp:1997
    #30 0x7efcf6712bdb in QApplication::notify(QObject*, QEvent*) /home/mitch/dev/qt-dev/qtbase/src/widgets/kernel/qapplication.cpp:2660
    #31 0x7efceffda779 in QCoreApplication::notifyInternal2(QObject*, QEvent*) /home/mitch/dev/qt-dev/qtbase/src/corelib/kernel/qcoreapplication.cpp:1061
    #32 0x7efceffdbf2f in QCoreApplication::sendEvent(QObject*, QEvent*) /home/mitch/dev/qt-dev/qtbase/src/corelib/kernel/qcoreapplication.cpp:1469
    #33 0x7efcf05690eb in QTimerInfoList::activateTimers() /home/mitch/dev/qt-dev/qtbase/src/corelib/kernel/qtimerinfo_unix.cpp:639
    #34 0x7efcf08563c7 in timerSourceDispatch /home/mitch/dev/qt-dev/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:185
    #35 0x7efcee59f17c in g_main_context_dispatch (/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x5217c)
    #36 0x7efcee59f3ff  (/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x523ff)
    #37 0x7efcee59f4a2 in g_main_context_iteration (/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x524a2)
    #38 0x7efcf0857faa in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) /home/mitch/dev/qt-dev/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:429
    #39 0x7efce81dd296 in QXcbGlibEventDispatcher::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) /home/mitch/dev/qt-dev/qtbase/src/plugins/platforms/xcb/qxcbeventdispatcher.cpp:132
    #40 0x7efceffdb6b2 in QCoreApplication::processEvents(QFlags<QEventLoop::ProcessEventsFlag>, int) /home/mitch/dev/qt-dev/qtbase/src/corelib/kernel/qcoreapplication.cpp:1321
    #41 0x7efcf01708fe in QTest::qWait(int) /home/mitch/dev/qt-dev/qtbase/src/corelib/kernel/qtestsupport_core.cpp:119
    #42 0x563b462ffd0c in TestHelper::updateVariables(bool, Project::Type) /home/mitch/dev/slate/tests/shared/testhelper.cpp:2447
    #43 0x563b462f142d in TestHelper::loadProject(QUrl const&, QRegularExpression const&) /home/mitch/dev/slate/tests/shared/testhelper.cpp:2393
    #44 0x563b45f75772 in tst_App::saveAsAndLoadTilesetProject() /home/mitch/dev/slate/tests/auto/tst_app.cpp:456
    #45 0x563b460ba5fe in tst_App::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) /home/mitch/dev/slate-qt_dev_debug-Debug/Debug_qt_dev_d_9f073821014d7ede/test-app.99bdad93/qt.headers/tst_app.moc:641
    #46 0x7efcf0024842 in QMetaMethod::invoke(QObject*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) const /home/mitch/dev/qt-dev/qtbase/src/corelib/kernel/qmetaobject.cpp:2384
    #47 0x7efcf84940af in QMetaMethod::invoke(QObject*, Qt::ConnectionType, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) const /home/mitch/dev/qt-dev/qtbase/src/corelib/kernel/qmetaobject.h:126
    #48 0x7efcf847e7e9 in QTest::TestMethods::invokeTestOnData(int) const /home/mitch/dev/qt-dev/qtbase/src/testlib/qtestcase.cpp:941
    #49 0x7efcf84809c3 in QTest::TestMethods::invokeTest(int, char const*, QTest::WatchDog*) const /home/mitch/dev/qt-dev/qtbase/src/testlib/qtestcase.cpp:1173
    #50 0x7efcf8483f1a in QTest::TestMethods::invokeTests(QObject*) const /home/mitch/dev/qt-dev/qtbase/src/testlib/qtestcase.cpp:1516
    #51 0x7efcf84854eb in QTest::qRun() /home/mitch/dev/qt-dev/qtbase/src/testlib/qtestcase.cpp:1943
    #52 0x7efcf84848e4 in QTest::qExec(QObject*, int, char**) /home/mitch/dev/qt-dev/qtbase/src/testlib/qtestcase.cpp:1851
    #53 0x563b460ba418 in main /home/mitch/dev/slate/tests/auto/tst_app.cpp:6856
    #54 0x7efcef62e0b2 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x270b2)
    #55 0x563b45f531dd in _start (/home/mitch/dev/slate-qt_dev_debug-Debug/Debug_qt_dev_d_9f073821014d7ede/install-root/usr/local/test-app+0x631dd)
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