Fix line drawing with thickness > 2 #7
Labels
Comments
mitchcurtis
changed the title
This was referenced Nov 6, 2018
mitchcurtis
added a commit
that referenced
this issue
Jun 18, 2021
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
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
Mar 21, 2022
The full backtrace is below.
My understanding is that this line in TestHelper::addNewGuides
VERIFY(imageGrabber.requestImage(canvas));
results in QQuickItem::grabToImage connecting to this signal:
connect(window(), &QQuickWindow::afterRendering, result, &QQuickItemGrabResult::render, Qt::DirectConnection);
We then wait until the image is not null:
TRY_VERIFY(imageGrabber.isReady());
This is important, as we should really be listening to the ready signal.
Meanwhile, on the render thread, the image is set at some point:
d->image = d->texture->toImage();
I'm guessing that, back in the main thread, we then detect that the image is not null,
store it, and destroy the QQuickItemGrabResult:
const QImage originalCanvasGrab = imageGrabber.takeImage();
QQuickItemGrabResult::render() is still running though, so it tries to delete the texture
and set it to null:
delete d->texture;
d->texture = nullptr;
The latter causes the HUAF.
Fix it by listening to the ready signal, which is emitted via a posted event,
so we can be sure that it's safe to destroy the QQuickItemGrabResult.
=================================================================
==26184==ERROR: AddressSanitizer: heap-use-after-free on address 0x6110005356d0 at pc 0x00011a46f761 bp 0x700006e81610 sp 0x700006e81608
WRITE of size 8 at 0x6110005356d0 thread T5
#0 0x11a46f760 in QQuickItemGrabResult::render() qquickitemgrabresult.cpp:294
#1 0x11a47e648 in QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, void (QQuickItemGrabResult::*)()>::call(void (QQuickItemGrabResult::*)(), QQuickItemGrabResult*, void**) qobjectdefs_impl.h:171
#2 0x11a47e34d in void QtPrivate::FunctionPointer<void (QQuickItemGrabResult::*)()>::call<QtPrivate::List<>, void>(void (QQuickItemGrabResult::*)(), QQuickItemGrabResult*, void**) qobjectdefs_impl.h:208
#3 0x11a47def2 in QtPrivate::QSlotObject<void (QQuickItemGrabResult::*)(), QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) qobjectdefs_impl.h:419
#4 0x11d620cd5 in QtPrivate::QSlotObjectBase::call(QObject*, void**) qobjectdefs_impl.h:399
#5 0x11d7a84d0 in void doActivate<false>(QObject*, int, void**) qobject.cpp:3932
#6 0x11d7a53a8 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) qobject.cpp:3992
#7 0x11a789314 in QQuickWindow::afterRendering() moc_qquickwindow.cpp:590
#8 0x11a788d68 in QQuickWindowPrivate::renderSceneGraph(QSize const&, QSize const&) qquickwindow.cpp:668
#9 0x11b39b84e in QSGRenderThread::syncAndRender() qsgthreadedrenderloop.cpp:769
#10 0x11b39f607 in QSGRenderThread::run() qsgthreadedrenderloop.cpp:974
#11 0x11df239da in QThreadPrivate::start(void*)::$_0::operator()() const qthread_unix.cpp:358
#12 0x11df1c80c in void (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::$_0>(QThreadPrivate::start(void*)::$_0&&) qthread_unix.cpp:294
#13 0x11df1c446 in QThreadPrivate::start(void*) qthread_unix.cpp:317
#14 0x7ff80ab714e0 in _pthread_start+0x7c (libsystem_pthread.dylib:x86_64+0x64e0)
#15 0x7ff80ab6cf6a in thread_start+0xe (libsystem_pthread.dylib:x86_64+0x1f6a)
0x6110005356d0 is located 208 bytes inside of 240-byte region [0x611000535600,0x6110005356f0)
freed by thread T0 here:
#0 0x11091c66d in wrap__ZdlPv+0x7d (libclang_rt.asan_osx_dynamic.dylib:x86_64h+0x5766d)
#1 0x11a473221 in QQuickItemGrabResultPrivate::~QQuickItemGrabResultPrivate() qquickitemgrabresult.cpp:73
#2 0x11d7c7778 in QScopedPointerDeleter<QObjectData>::cleanup(QObjectData*) qscopedpointer.h:60
#3 0x11d7c76dc in QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> >::~QScopedPointer() qscopedpointer.h:116
#4 0x11d788144 in QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> >::~QScopedPointer() qscopedpointer.h:114
#5 0x11d78941a in QObject::~QObject() qobject.cpp:1116
#6 0x11a4753d4 in QQuickItemGrabResult::~QQuickItemGrabResult() qquickitemgrabresult.h:57
#7 0x11a472ff4 in QQuickItemGrabResult::~QQuickItemGrabResult() qquickitemgrabresult.h:57
#8 0x11a473018 in QQuickItemGrabResult::~QQuickItemGrabResult() qquickitemgrabresult.h:57
#9 0x11a47ecb8 in QtSharedPointer::CustomDeleter<QQuickItemGrabResult, QtSharedPointer::NormalDeleter>::execute() qsharedpointer_impl.h:190
#10 0x11a47eb70 in QtSharedPointer::ExternalRefCountWithCustomDeleter<QQuickItemGrabResult, QtSharedPointer::NormalDeleter>::deleter(QtSharedPointer::ExternalRefCountData*) qsharedpointer_impl.h:208
#11 0x10e3d46fa in QtSharedPointer::ExternalRefCountData::destroy() qsharedpointer_impl.h:146
#12 0x10e3d4649 in QSharedPointer<QQuickItemGrabResult>::deref(QtSharedPointer::ExternalRefCountData*) qsharedpointer_impl.h:477
#13 0x10e3d4608 in QSharedPointer<QQuickItemGrabResult>::deref() qsharedpointer_impl.h:472
#14 0x10e3d45b4 in QSharedPointer<QQuickItemGrabResult>::~QSharedPointer() qsharedpointer_impl.h:312
#15 0x10e3d4074 in QSharedPointer<QQuickItemGrabResult>::~QSharedPointer() qsharedpointer_impl.h:312
#16 0x10e3d4b4f in QSharedPointer<QQuickItemGrabResult>::clear() qsharedpointer_impl.h:416
#17 0x10e3d4a24 in QSharedPointer<QQuickItemGrabResult>::reset() qsharedpointer_impl.h:383
#18 0x10e23b7ee in ImageGrabber::takeImage() testhelper.h:78
#19 0x10e5a1424 in TestHelper::addNewGuides(int, int, TestHelper::AddNewGuidesFlag) testhelper.cpp:1601
#20 0x10e2def3c in tst_App::addAndDeleteMultipleGuides() tst_app.cpp:3484
#21 0x10e3abed9 in tst_App::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) tst_app.moc:744
#22 0x11d61f5ea in QMetaMethod::invoke(QObject*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) const qmetaobject.cpp:2390
#23 0x10f298aed in QMetaMethod::invoke(QObject*, Qt::ConnectionType, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) const qmetaobject.h:126
#24 0x10f296661 in QTest::TestMethods::invokeTestOnData(int) const qtestcase.cpp:966
#25 0x10f299b96 in QTest::TestMethods::invokeTest(int, char const*, QTest::WatchDog*) const qtestcase.cpp:1210
#26 0x10f2a002a in QTest::TestMethods::invokeTests(QObject*) const qtestcase.cpp:1552
#27 0x10f2a23cf in QTest::qRun() qtestcase.cpp:2018
#28 0x10f2a1047 in QTest::qExec(QObject*, int, char**) qtestcase.cpp:1920
#29 0x10e3ab836 in main tst_app.cpp:7095
previously allocated by thread T0 here:
#0 0x11091c24d in wrap__Znwm+0x7d (libclang_rt.asan_osx_dynamic.dylib:x86_64h+0x5724d)
#1 0x11a46cd45 in QQuickItemGrabResult::QQuickItemGrabResult(QObject*) qquickitemgrabresult.cpp:175
#2 0x11a46cdec in QQuickItemGrabResult::QQuickItemGrabResult(QObject*) qquickitemgrabresult.cpp:176
#3 0x11a470b1a in QQuickItemGrabResultPrivate::create(QQuickItem*, QSize const&) qquickitemgrabresult.cpp:326
#4 0x11a470efd in QQuickItem::grabToImage(QSize const&) qquickitemgrabresult.cpp:360
#5 0x10e23b2bf in ImageGrabber::requestImage(QQuickItem*) testhelper.h:64
#6 0x10e59fb7b in TestHelper::addNewGuides(int, int, TestHelper::AddNewGuidesFlag) testhelper.cpp:1599
#7 0x10e2def3c in tst_App::addAndDeleteMultipleGuides() tst_app.cpp:3484
#8 0x10e3abed9 in tst_App::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) tst_app.moc:744
#9 0x11d61f5ea in QMetaMethod::invoke(QObject*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) const qmetaobject.cpp:2390
#10 0x10f298aed in QMetaMethod::invoke(QObject*, Qt::ConnectionType, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) const qmetaobject.h:126
#11 0x10f296661 in QTest::TestMethods::invokeTestOnData(int) const qtestcase.cpp:966
#12 0x10f299b96 in QTest::TestMethods::invokeTest(int, char const*, QTest::WatchDog*) const qtestcase.cpp:1210
#13 0x10f2a002a in QTest::TestMethods::invokeTests(QObject*) const qtestcase.cpp:1552
#14 0x10f2a23cf in QTest::qRun() qtestcase.cpp:2018
#15 0x10f2a1047 in QTest::qExec(QObject*, int, char**) qtestcase.cpp:1920
#16 0x10e3ab836 in main tst_app.cpp:7095
#17 0x11139751d in start+0x1cd (dyld:x86_64+0x551d)
Thread T5 created by T0 here:
#0 0x11090771c in wrap_pthread_create+0x5c (libclang_rt.asan_osx_dynamic.dylib:x86_64h+0x4271c)
#1 0x11df1e41f in QThread::start(QThread::Priority) qthread_unix.cpp:744
#2 0x11b3a7030 in QSGThreadedRenderLoop::handleExposure(QQuickWindow*) qsgthreadedrenderloop.cpp:1319
#3 0x11b3a5215 in QSGThreadedRenderLoop::exposureChanged(QQuickWindow*) qsgthreadedrenderloop.cpp:1244
#4 0x11a781ffc in QQuickWindow::exposeEvent(QExposeEvent*) qquickwindow.cpp:214
#5 0x12835b785 in QWindow::event(QEvent*) qwindow.cpp:2501
#6 0x11a792d84 in QQuickWindow::event(QEvent*) qquickwindow.cpp:1552
#7 0x11426e051 in QApplicationPrivate::notify_helper(QObject*, QEvent*) qapplication.cpp:3340
#8 0x11427b41e in QApplication::notify(QObject*, QEvent*) qapplication.cpp:3291
#9 0x11d5b2ac7 in QCoreApplication::notifyInternal2(QObject*, QEvent*) qcoreapplication.cpp:1067
#10 0x11d5b5843 in QCoreApplication::sendSpontaneousEvent(QObject*, QEvent*) qcoreapplication.cpp:1497
#11 0x128170b9f in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) qguiapplication.cpp:3174
#12 0x128162f0b in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) qguiapplication.cpp:2078
#13 0x1283af9c1 in bool QWindowSystemHelper<QWindowSystemInterface::SynchronousDelivery>::handleEvent<QWindowSystemInterfacePrivate::ExposeEvent, QWindow*, QRegion>(QWindow*, QRegion) qwindowsysteminterface.cpp:134
#14 0x128394c88 in bool handleWindowSystemEvent<QWindowSystemInterfacePrivate::ExposeEvent, QWindowSystemInterface::SynchronousDelivery, QWindow*, QRegion>(QWindow*, QRegion) qwindowsysteminterface.cpp:166
#15 0x128394b1c in bool QWindowSystemInterface::handleExposeEvent<QWindowSystemInterface::SynchronousDelivery>(QWindow*, QRegion const&) qwindowsysteminterface.cpp:359
#16 0x1128c0c8e in QCocoaWindow::handleExposeEvent(QRegion const&) qcocoawindow.mm:1444
#17 0x1128f2ddd in -[QNSView(Drawing) displayLayer:] qnsview_drawing.mm:243
#18 0x7ff811ce4950 in CA::Layer::display_if_needed(CA::Transaction*)+0x368 (QuartzCore:x86_64+0x20950)
#19 0x7ff811e3b335 in CA::Context::commit_transaction(CA::Transaction*, double, double*)+0x27f (QuartzCore:x86_64+0x177335)
#20 0x7ff811cc6230 in CA::Transaction::commit()+0x308 (QuartzCore:x86_64+0x2230)
#21 0x7ff80d7c87f0 in __62+[CATransaction(NSCATransaction) NS_setFlushesWithDisplayLink]_block_invoke+0x11c (AppKit:x86_64+0x1aa7f0)
#22 0x7ff80df0f687 in ___NSRunLoopObserverCreateWithHandler_block_invoke+0x28 (AppKit:x86_64+0x8f1687)
#23 0x7ff80ac36e8f in __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__+0x16 (CoreFoundation:x86_64h+0x7ee8f)
#24 0x7ff80ac36d21 in __CFRunLoopDoObservers+0x21e (CoreFoundation:x86_64h+0x7ed21)
#25 0x7ff80ac361b3 in __CFRunLoopRun+0x347 (CoreFoundation:x86_64h+0x7e1b3)
#26 0x7ff80ac357ab in CFRunLoopRunSpecific+0x231 (CoreFoundation:x86_64h+0x7d7ab)
#27 0x7ff8138bcce5 in RunCurrentEventLoopInMode+0x123 (HIToolbox:x86_64+0x2fce5)
#28 0x7ff8138bc912 in ReceiveNextEventCommon+0x11a (HIToolbox:x86_64+0x2f912)
#29 0x7ff8138bc7e4 in _BlockUntilNextEventMatchingListInModeWithFilter+0x45 (HIToolbox:x86_64+0x2f7e4)
#30 0x7ff80d65c5cc in _DPSNextEvent+0x39e (AppKit:x86_64+0x3e5cc)
#31 0x7ff80d65ac89 in -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:]+0x571 (AppKit:x86_64+0x3cc89)
#32 0x7ff80d64d338 in -[NSApplication run]+0x249 (AppKit:x86_64+0x2f338)
#33 0x11284b68d in QCocoaEventDispatcherPrivate::ensureNSAppInitialized() qcocoaeventdispatcher.mm:608
#34 0x11284a486 in QCocoaEventDispatcher::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) qcocoaeventdispatcher.mm:438
#35 0x11d5b3eed in QCoreApplication::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) qcoreapplication.cpp:1296
#36 0x12832fdf1 in bool QTest::qWaitFor<QTest::qWaitForWindowExposed(QWindow*, int)::$_1>(QTest::qWaitForWindowExposed(QWindow*, int)::$_1, int) qtestsupport_core.h:75
#37 0x12832f522 in QTest::qWaitForWindowExposed(QWindow*, int) qtestsupport_gui.cpp:93
#38 0x10e4c3a7a in TestHelper::initTestCase() testhelper.cpp:64
#39 0x10e452a50 in TestHelper::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) moc_testhelper.cpp:74
#40 0x11d61f5ea in QMetaMethod::invoke(QObject*, Qt::ConnectionType, QGenericReturnArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) const qmetaobject.cpp:2390
#41 0x10f298aed in QMetaMethod::invoke(QObject*, Qt::ConnectionType, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument, QGenericArgument) const qmetaobject.h:126
#42 0x10f29fdca in QTest::TestMethods::invokeTests(QObject*) const qtestcase.cpp:1539
#43 0x10f2a23cf in QTest::qRun() qtestcase.cpp:2018
#44 0x10f2a1047 in QTest::qExec(QObject*, int, char**) qtestcase.cpp:1920
#45 0x10e3ab836 in main tst_app.cpp:7095
#46 0x11139751d in start+0x1cd (dyld:x86_64+0x551d)
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
No description provided.
The text was updated successfully, but these errors were encountered: