[Webkit-unassigned] [Bug 78038] [Chromium] Assertion failure minX <= maxX in Region.cpp

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=78038





--- Comment #4 from Dana Jansens <danakj at chromium.org>  2012-02-07 14:41:53 PST ---
Just in case it's of interest and others have difficulty reproing, here is the full backtrace.

Summary: Region seems okay, though asserting sooner on negative widths might be useful.

[3526:3526:531217440850:ERROR:process_util_posix.cc(142)] Received signal 11
    base::debug::StackTrace::StackTrace() [0x7f6fd8a6bc06]
    base::(anonymous namespace)::StackDumpSignalHandler() [0x7f6fd8ac955d]
    0x7f6fcdf71af0
    WebCore::Region::Shape::bounds() [0x7f6fd486f30f]
    WebCore::Region::subtract() [0x7f6fd486f805]
    WebCore::TiledLayerChromium::updateBounds() [0x7f6fd48a662f]
    WebCore::TiledLayerChromium::invalidateRect() [0x7f6fd48a75c7]
    WebCore::TiledLayerChromium::setNeedsDisplayRect() [0x7f6fd48a753d]
    WebCore::LayerChromium::setNeedsDisplay() [0x7f6fd3dfb03c]
    WebCore::LayerChromium::setBounds() [0x7f6fd4887302]
    WebCore::GraphicsLayerChromium::updateLayerSize() [0x7f6fd4883d58]
    WebCore::GraphicsLayerChromium::setSize() [0x7f6fd4882e24]
    WebCore::positionScrollbarLayer() [0x7f6fd47df99a]
    WebCore::ScrollView::positionScrollbarLayers() [0x7f6fd47dfc00]
    WebCore::RenderLayerCompositor::updateOverflowControlsLayers() [0x7f6fd424d7ef]
    WebCore::RenderLayerCompositor::frameViewDidChangeSize() [0x7f6fd424ae0d]
    WebCore::RenderLayerCompositor::ensureRootLayer() [0x7f6fd424dd68]
    WebCore::RenderLayerCompositor::enableCompositingMode() [0x7f6fd4247bc5]
    WebCore::RenderLayerCompositor::updateBacking() [0x7f6fd42485e4]
    WebCore::RenderLayerCompositor::computeCompositingRequirements() [0x7f6fd424a416]
    WebCore::RenderLayerCompositor::computeCompositingRequirements() [0x7f6fd4249f63]
    WebCore::RenderLayerCompositor::computeCompositingRequirements() [0x7f6fd424a00a]
    WebCore::RenderLayerCompositor::updateCompositingLayers() [0x7f6fd42483a9]
    WebCore::FrameView::updateCompositingLayers() [0x7f6fd4e2753a]
    WebCore::FrameView::layout() [0x7f6fd4e28c5f]
    WebCore::FrameView::layoutTimerFired() [0x7f6fd4e2bb99]
    WebCore::Timer<>::fired() [0x7f6fd4e35728]
    WebCore::ThreadTimers::sharedTimerFiredInternal() [0x7f6fd47ede30]
    WebCore::ThreadTimers::sharedTimerFired() [0x7f6fd47edd67]
    webkit_glue::WebKitPlatformSupportImpl::DoTimeout() [0x7f6fd8eae30c]
    base::BaseTimer<>::TimerTask::Run() [0x7f6fd8eaeb7f]
    base::internal::RunnableAdapter<>::Run() [0x7f6fd8b07f61]
    base::internal::InvokeHelper<>::MakeItSo() [0x7f6fd8b07ee5]
    base::internal::Invoker<>::Run() [0x7f6fd8b07e91]
    base::Callback<>::Run() [0x7f6fd8a64267]
    MessageLoop::RunTask() [0x7f6fd8aa0710]
    MessageLoop::DeferOrRunPendingTask() [0x7f6fd8aa0827]
    MessageLoop::DoWork() [0x7f6fd8aa1049]
    base::MessagePumpGlib::RunWithDispatcher() [0x7f6fd8a47738]
    base::MessagePumpGlib::Run() [0x7f6fd8a47b18]
    MessageLoop::RunInternal() [0x7f6fd8aa03cb]
    MessageLoop::RunHandler() [0x7f6fd8aa027e]
    MessageLoop::Run() [0x7f6fd8a9fbb3]
    webkit_support::RunMessageLoop() [0x57299c]
    TestShell::waitTestFinished() [0x53826e]
    TestShell::runFileTest() [0x5308f9]
    runTest() [0x4fa214]
    main [0x4facd6]
    0x7f6fcdf5cc4d
    0x4e6569

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