1615510 - Assertion failure: target->IsApplication() || target->IsOuterDoc() || target->IsXULTree() (Only app or outerdoc accessible reorder events are in the queue), at src/accessible/base/EventQueue.cpp:90

Status: NEW

(Core :: Disability Access APIs, defect, P3)

Description

[Tyson Smith [:tsmith]]

Attachment: testcase.html

Reduced with m-c 20200212-f314754b7e11

Assertion failure: target->IsApplication() || target->IsOuterDoc() || target->IsXULTree() (Only app or outerdoc accessible reorder events are in the queue), at src/accessible/base/EventQueue.cpp:90

#0 mozilla::a11y::EventQueue::CoalesceEvents() src/accessible/base/EventQueue.cpp:173:23
#1 mozilla::a11y::EventQueue::PushEvent(mozilla::a11y::AccEvent*) src/accessible/base/EventQueue.cpp:37:3
#2 mozilla::a11y::NotificationController::QueueEvent(mozilla::a11y::AccEvent*) src/accessible/base/NotificationController.h:111:9
#3 mozilla::a11y::DocAccessible::DoInitialUpdate() src/accessible/generic/DocAccessible.cpp:1609:23
#4 mozilla::a11y::NotificationController::WillRefresh(mozilla::TimeStamp) src/accessible/base/NotificationController.cpp:634:16
#5 nsRefreshDriver::Tick(mozilla::layers::BaseTransactionId<mozilla::VsyncIdType>, mozilla::TimeStamp) src/layout/base/nsRefreshDriver.cpp:1974:12
#6 mozilla::RefreshDriverTimer::TickRefreshDrivers(mozilla::layers::BaseTransactionId<mozilla::VsyncIdType>, mozilla::TimeStamp, nsTArray<RefPtr<nsRefreshDriver> >&) src/layout/base/nsRefreshDriver.cpp:351:7
#7 mozilla::RefreshDriverTimer::Tick(mozilla::layers::BaseTransactionId<mozilla::VsyncIdType>, mozilla::TimeStamp) src/layout/base/nsRefreshDriver.cpp:368:5
#8 mozilla::VsyncRefreshDriverTimer::RefreshDriverVsyncObserver::TickRefreshDriver(mozilla::layers::BaseTransactionId<mozilla::VsyncIdType>, mozilla::TimeStamp) src/layout/base/nsRefreshDriver.cpp:740:16
#9 mozilla::VsyncRefreshDriverTimer::RefreshDriverVsyncObserver::NotifyVsync(mozilla::VsyncEvent const&) src/layout/base/nsRefreshDriver.cpp:635:9
#10 mozilla::layout::VsyncChild::RecvNotify(mozilla::VsyncEvent const&) src/layout/ipc/VsyncChild.cpp:64:16
#11 mozilla::layout::PVsyncChild::OnMessageReceived(IPC::Message const&) src/obj-firefox/ipc/ipdl/PVsyncChild.cpp:187:54
#12 mozilla::ipc::PBackgroundChild::OnMessageReceived(IPC::Message const&) src/obj-firefox/ipc/ipdl/PBackgroundChild.cpp:5806:32
#13 mozilla::ipc::MessageChannel::DispatchAsyncMessage(mozilla::ipc::ActorLifecycleProxy*, IPC::Message const&) src/ipc/glue/MessageChannel.cpp:2215:25
#14 mozilla::ipc::MessageChannel::DispatchMessage(IPC::Message&&) src/ipc/glue/MessageChannel.cpp:2137:9
#15 mozilla::ipc::MessageChannel::RunMessage(mozilla::ipc::MessageChannel::MessageTask&) src/ipc/glue/MessageChannel.cpp:1976:3
#16 mozilla::ipc::MessageChannel::MessageTask::Run() src/ipc/glue/MessageChannel.cpp:2007:13
#17 nsThread::ProcessNextEvent(bool, bool*) src/xpcom/threads/nsThread.cpp:1220:14
#18 NS_ProcessNextEvent(nsIThread*, bool) src/xpcom/threads/nsThreadUtils.cpp:481:10
#19 mozilla::ipc::MessagePump::Run(base::MessagePump::Delegate*) src/ipc/glue/MessagePump.cpp:109:5
#20 MessageLoop::RunInternal() src/ipc/chromium/src/base/message_loop.cc:315:10
#21 MessageLoop::Run() src/ipc/chromium/src/base/message_loop.cc:290:3
#22 nsBaseAppShell::Run() src/widget/nsBaseAppShell.cpp:137:27
#23 XRE_RunAppShell() src/toolkit/xre/nsEmbedFunctions.cpp:943:20
#24 mozilla::ipc::MessagePumpForChildProcess::Run(base::MessagePump::Delegate*) src/ipc/glue/MessagePump.cpp:237:9
#25 MessageLoop::RunInternal() src/ipc/chromium/src/base/message_loop.cc:315:10
#26 MessageLoop::Run() src/ipc/chromium/src/base/message_loop.cc:290:3
#27 XRE_InitChildProcess(int, char**, XREChildData const*) src/toolkit/xre/nsEmbedFunctions.cpp:778:34
#28 content_process_main(mozilla::Bootstrap*, int, char**) src/browser/app/../../ipc/contentproc/plugin-container.cpp:56:28
#29 main src/browser/app/nsBrowserApp.cpp:303:18

Comment 1

[Tyson Smith [:tsmith]]

A Pernosco session is available here: https://pernos.co/debug/x9l5woMbO5X-hNoCq7hk6w/index.html

Comment 2

[James Teh [:Jamie]]

The embed doesn't get recreated as an OuterDocAccessible (the role is still text frame). The code I added in bug 1593396 should deal with this, but it doesn't seem to be. I don't know why yet.