The following assertion failure is seen attributed to layout test accessibility/mac/focus-setting-selection-syncronizing-not-clearing.html: https://webkit-test-results.webkit.org/dashboards/flakiness_dashboard.html#showAllRuns=true&tests=accessibility%2Fmac%2Ffocus-setting-selection-syncronizing-not-clearing.html ASSERTION FAILED: cache /Volumes/Data/slave/highsierra-debug/build/Source/WebCore/accessibility/mac/WebAccessibilityObjectWrapperMac.mm(711) : id textMarkerForVisiblePosition(WebCore::AXObjectCache *, const WebCore::VisiblePosition &) 1 0x4b8953e09 WTFCrash 2 0x4a800ba7b WTFCrashWithInfo(int, char const*, char const*, int) 3 0x4ab975231 textMarkerForVisiblePosition(WebCore::AXObjectCache*, WebCore::VisiblePosition const&) 4 0x4ab976681 textMarkerRangeFromVisiblePositions(WebCore::AXObjectCache*, WebCore::VisiblePosition const&, WebCore::VisiblePosition const&) 5 0x4ab976656 -[WebAccessibilityObjectWrapper textMarkerRangeFromVisiblePositions:endPosition:] 6 0x4a83ee416 WebCore::AXObjectCache::postTextStateChangePlatformNotification(WebCore::AccessibilityObject*, WebCore::AXTextStateChangeIntent const&, WebCore::VisibleSelection const&) 7 0x4a990f6b4 WebCore::AXObjectCache::postTextStateChangeNotification(WebCore::AccessibilityObject*, WebCore::AXTextStateChangeIntent const&, WebCore::VisibleSelection const&) 8 0x4a990f84c WebCore::AXObjectCache::postTextStateChangeNotification(WebCore::Position const&, WebCore::AXTextStateChangeIntent const&, WebCore::VisibleSelection const&) 9 0x4a84e1349 WebCore::FrameSelection::notifyAccessibilityForSelectionChange(WebCore::AXTextStateChangeIntent const&) 10 0x4aa1dcc42 WebCore::FrameSelection::updateAndRevealSelection(WebCore::AXTextStateChangeIntent const&) 11 0x4aa1da9ae WebCore::FrameSelection::setSelection(WebCore::VisibleSelection const&, WTF::OptionSet<WebCore::FrameSelection::SetSelectionOption>, WebCore::AXTextStateChangeIntent, WebCore::FrameSelection::CursorAlignOnScroll, WebCore::TextGranularity) 12 0x4aa20c566 WebCore::SetSelectionCommand::doApply() 13 0x4aa17c1bf WebCore::CompositeEditCommand::applyCommandToComposite(WTF::Ref<WebCore::EditCommand, WTF::DumbPtrTraits<WebCore::EditCommand> >&&) 14 0x4aa210254 WebCore::SpellingCorrectionCommand::doApply() 15 0x4aa16790c WebCore::CompositeEditCommand::apply() 16 0x4aa167352 WebCore::AlternativeTextController::applyAlternativeTextToRange(WebCore::Range const&, WTF::String const&, WebCore::AlternativeTextType, WTF::OptionSet<WebCore::DocumentMarker::MarkerType>) 17 0x4aa166813 WebCore::AlternativeTextController::handleAlternativeTextUIResult(WTF::String const&) 18 0x4aa1bf60c WebCore::Editor::handleAlternativeTextUIResult(WTF::String const&) 19 0x10ba32b39 WebKit::WebPage::handleAlternativeTextUIResult(WTF::String const&) 20 0x10ba94a1a void IPC::callMemberFunctionImpl<WebKit::WebPage, void (WebKit::WebPage::*)(WTF::String const&), std::__1::tuple<WTF::String>, 0ul>(WebKit::WebPage*, void (WebKit::WebPage::*)(WTF::String const&), std::__1::tuple<WTF::String>&&, std::__1::integer_sequence<unsigned long, 0ul>) 21 0x10ba94970 void IPC::callMemberFunction<WebKit::WebPage, void (WebKit::WebPage::*)(WTF::String const&), std::__1::tuple<WTF::String>, std::__1::integer_sequence<unsigned long, 0ul> >(std::__1::tuple<WTF::String>&&, WebKit::WebPage*, void (WebKit::WebPage::*)(WTF::String const&)) 22 0x10ba8d0a3 void IPC::handleMessage<Messages::WebPage::HandleAlternativeTextUIResult, WebKit::WebPage, void (WebKit::WebPage::*)(WTF::String const&)>(IPC::Decoder&, WebKit::WebPage*, void (WebKit::WebPage::*)(WTF::String const&)) 23 0x10ba7f1e2 WebKit::WebPage::didReceiveWebPageMessage(IPC::Connection&, IPC::Decoder&) 24 0x10ba2f83e WebKit::WebPage::didReceiveMessage(IPC::Connection&, IPC::Decoder&) 25 0x10ab920fa IPC::MessageReceiverMap::dispatchMessage(IPC::Connection&, IPC::Decoder&) 26 0x10b61156d WebKit::WebProcess::didReceiveMessage(IPC::Connection&, IPC::Decoder&) 27 0x10ab4f85a IPC::Connection::dispatchMessage(IPC::Decoder&) 28 0x10ab424e1 IPC::Connection::dispatchMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >) 29 0x10ab503d7 IPC::Connection::dispatchOneIncomingMessage() 30 0x10ab6c878 IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >)::$_14::operator()() 31 0x10ab6c789 WTF::Function<void ()>::CallableWrapper<IPC::Connection::enqueueIncomingMessage(std::__1::unique_ptr<IPC::Decoder, std::__1::default_delete<IPC::Decoder> >)::$_14>::call() LEAK: 2 WebPageProxy
<rdar://problem/43853526>
Created attachment 348423 [details] Crash log
Skipped on High Sierra+ in: https://trac.webkit.org/changeset/236442/webkit
*** Bug 189950 has been marked as a duplicate of this bug. ***
Created attachment 360320 [details] patch
@zalan - can you review?
Comment on attachment 360320 [details] patch Clearing flags on attachment: 360320 Committed r240773: <https://trac.webkit.org/changeset/240773>
All reviewed patches have been landed. Closing bug.