[Webkit-unassigned] [Bug 288406] New: REGRESSION(290214 at main-290233@main): [ iOS Debug ] TestWebKitAPI.WKWebView.IsDisplayingPDF is a constant timeout

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=288406

            Bug ID: 288406
           Summary: REGRESSION(290214 at main-290233@main): [ iOS Debug ]
                    TestWebKitAPI.WKWebView.IsDisplayingPDF is a constant
                    timeout
           Product: WebKit
           Version: Other
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: Morningstar at apple.com

TestWebKitAPI.WKWebView.IsDisplayingPDF
Is a constant timeout on iOS debug queues that started between 290233 at main and 290214 at main https://github.com/WebKit/WebKit/compare/290233@main...290214@main 

HISTORY:
https://results.webkit.org/?suite=api-tests&test=TestWebKitAPI.WKWebView.IsDisplayingPDF

TEST-RUN:
https://build.webkit.org/#/builders/1391/builds/350

STDIO:
https://build.webkit.org/#/builders/1391/builds/350/steps/22/logs/stdio

TIMEOUT:
TestWebKitAPI.WKWebView.IsDisplayingPDF
        ASSERTION FAILED: !m_deferredScrollDelta
        /Volumes/Data/worker/Apple-iOS-18-Simulator-Debug-Build/build/Source/WebCore/platform/ScrollView.cpp(508) : virtual void WebCore::ScrollView::scrollTo(const ScrollPosition &)
        1   0x346295d58 WebCore::ScrollView::scrollTo(WebCore::IntPoint const&)
        2   0x345f5fcec WebCore::LocalFrameView::scrollTo(WebCore::IntPoint const&)
        3   0x346295510 WebCore::ScrollView::setScrollOffset(WebCore::IntPoint const&)
        4   0x34629c75c WebCore::ScrollableArea::scrollPositionChanged(WebCore::IntPoint const&)
        5   0x34629c6bc WebCore::ScrollableArea::notifyScrollPositionChanged(WebCore::IntPoint const&)
        6   0x346180ddc WebCore::AsyncScrollingCoordinator::reconcileScrollingState(WebCore::LocalFrameView&, WebCore::FloatPoint const&, std::__1::variant<std::__1::optional<WebCore::FloatPoint>, std::__1::optional<WebCore::FloatRect>> const&, WebCore::ScrollType, WebCore::ViewportRectStability, WebCore::ScrollingLayerPositionAction)
        7   0x346180a28 WebCore::AsyncScrollingCoordinator::updateScrollPositionAfterAsyncScroll(WebCore::ProcessQualified<WTF::ObjectIdentifierGeneric<WebCore::ScrollingNodeIDType, WTF::ObjectIdentifierMainThreadAccessTraits<unsigned long long>, unsigned long long>>, WebCore::FloatPoint const&, std::__1::optional<WebCore::FloatPoint>, WebCore::ScrollingLayerPositionAction, WebCore::ScrollType)
        8   0x34617f9c0 WebCore::AsyncScrollingCoordinator::applyScrollPositionUpdate(WebCore::ScrollUpdate&&, WebCore::ScrollType)
        9   0x34617e474 WebCore::AsyncScrollingCoordinator::applyScrollUpdate(WebCore::ScrollUpdate&&, WebCore::ScrollType)
        10  0x34617e018 WebCore::AsyncScrollingCoordinator::requestScrollToPosition(WebCore::ScrollableArea&, WebCore::IntPoint const&, WebCore::ScrollPositionChangeOptions const&)
        11  0x345f5a60c WebCore::LocalFrameView::requestScrollToPosition(WebCore::IntPoint const&, WebCore::ScrollPositionChangeOptions const&)
        12  0x34629cc50 WebCore::ScrollableArea::setScrollPositionFromAnimation(WebCore::IntPoint const&)
        13  0x34628a904 WebCore::ScrollAnimator::notifyPositionChanged(WebCore::FloatSize const&)
        14  0x346289efc WebCore::ScrollAnimator::setCurrentPosition(WebCore::FloatPoint const&, WebCore::ScrollAnimator::NotifyScrollableArea)
        15  0x346289e48 WebCore::ScrollAnimator::scrollToPositionWithoutAnimation(WebCore::FloatPoint const&, WebCore::ScrollClamping)
        16  0x34629c16c WebCore::ScrollableArea::scrollToPositionWithoutAnimation(WebCore::FloatPoint const&, WebCore::ScrollClamping)
        17  0x346296c78 WebCore::ScrollView::updateScrollbars(WebCore::IntPoint const&)::$_0::operator()(WebCore::IntPoint) const
        18  0x346292864 WebCore::ScrollView::updateScrollbars(WebCore::IntPoint const&)
        19  0x346294ec4 WebCore::ScrollView::setContentsSize(WebCore::IntSize const&)
        20  0x345f49238 WebCore::LocalFrameView::setContentsSize(WebCore::IntSize const&)
        21  0x345f4a9a4 WebCore::LocalFrameView::adjustViewSize()
        22  0x345f6ab1c WebCore::LocalFrameViewLayoutContext::performLayout(bool)
        23  0x345f4d6f0 WebCore::LocalFrameViewLayoutContext::layout(bool)
        24  0x344d26ab4 WebCore::Document::updateLayout(WTF::OptionSet<WebCore::LayoutOptions>, WebCore::Element const*)
        25  0x1334c7d04 WebKit::WebPage::shrinkToFitContent(WebKit::WebPage::ZoomToInitialScale)
        26  0x134545960 WebKit::WebPage::didFinishDocumentLoad(WebKit::WebFrame&)
        27  0x1343dcf70 WebKit::WebLocalFrameLoaderClient::dispatchDidFinishDocumentLoad()
        28  0x345bd6834 WebCore::FrameLoader::finishedParsing()
        29  0x344d4b410 WebCore::Document::finishedParsing()
        30  0x3454ae7f0 WebCore::RawDataDocumentParser::finish()
        31  0x345b668f0 WebCore::DocumentWriter::end()

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