[Webkit-unassigned] [Bug 73348] New: REGRESSION: Assertion when loading a page with a scrollable RenderLayer

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=73348

           Summary: REGRESSION: Assertion when loading a page with a
                    scrollable RenderLayer
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: Regression
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: bdakin at apple.com


This assertion started filing after http://trac.webkit.org/changeset/100819 which was for https://bugs.webkit.org/show_bug.cgi?id=70395

To reproduce: Using a Debug build, load a web page with a scrollable RenderLayer such as the attached test case. As far as I can tell, there is not a problem in release builds, and for some reason, this assertion does not fire when running the layout tests (though it does fire with many layout tests when they are loaded manually in the browser).

ASSERTION FAILED: !view() || !view()->layoutStateEnabled()
/Volumes/Big/Source/Labyrinth/OpenSource/Source/WebCore/rendering/RenderBox.cpp(1386) : virtual void WebCore::RenderBox::mapAbsoluteToLocalPoint(bool, bool, WebCore::TransformState &) const
1   0x10933cfc4 WebCore::RenderBox::mapAbsoluteToLocalPoint(bool, bool, WebCore::TransformState&) const
2   0x10940d005 WebCore::RenderObject::absoluteToLocal(WebCore::FloatPoint const&, bool, bool) const
3   0x10890e4b3 WebCore::FrameView::convertToRenderer(WebCore::RenderObject const*, WebCore::IntPoint const&) const
4   0x1093b887e WebCore::RenderLayer::convertFromContainingViewToScrollbar(WebCore::Scrollbar const*, WebCore::IntPoint const&) const
5   0x10958e548 WebCore::Scrollbar::convertFromContainingView(WebCore::IntPoint const&) const
6   0x109585118 -[WebScrollbarPainterControllerDelegate scrollerImpPair:convertContentPoint:toScrollerImp:]
7   0x7fff8e053b78 -[NSScrollerImpPair _updateOverlayScrollersStateWithReason:forceAtLeastKnobsVisible:]
8   0x109588fa1 WebCore::ScrollAnimatorMac::notifyPositionChanged()
9   0x109588a8a WebCore::ScrollAnimatorMac::immediateScrollToPoint(WebCore::FloatPoint const&)
10  0x109588a23 WebCore::ScrollAnimatorMac::scrollToOffsetWithoutAnimation(WebCore::FloatPoint const&)
11  0x10958280c WebCore::ScrollableArea::scrollToOffsetWithoutAnimation(WebCore::FloatPoint const&)
12  0x1093b52c3 WebCore::RenderLayer::scrollToOffset(int, int, WebCore::RenderLayer::ScrollOffsetClamping)
13  0x1093ba639 WebCore::RenderLayer::updateScrollInfoAfterLayout()
14  0x1092d4321 WebCore::RenderBlock::updateScrollInfoAfterLayout()
15  0x1092d50d0 WebCore::RenderBlock::layoutBlock(bool, int, WebCore::RenderBlock::BlockLayoutPass)
16  0x1092d4377 WebCore::RenderBlock::layout()
17  0x1092dd4ff WebCore::RenderBlock::layoutBlockChild(WebCore::RenderBox*, WebCore::RenderBlock::MarginInfo&, int&, int&)
18  0x1092d72d3 WebCore::RenderBlock::layoutBlockChildren(bool, int&)
19  0x1092d4cb7 WebCore::RenderBlock::layoutBlock(bool, int, WebCore::RenderBlock::BlockLayoutPass)
20  0x1092d4377 WebCore::RenderBlock::layout()
21  0x1092dd4ff WebCore::RenderBlock::layoutBlockChild(WebCore::RenderBox*, WebCore::RenderBlock::MarginInfo&, int&, int&)
22  0x1092d72d3 WebCore::RenderBlock::layoutBlockChildren(bool, int&)
23  0x1092d4cb7 WebCore::RenderBlock::layoutBlock(bool, int, WebCore::RenderBlock::BlockLayoutPass)
24  0x1092d4377 WebCore::RenderBlock::layout()
25  0x1092dd4ff WebCore::RenderBlock::layoutBlockChild(WebCore::RenderBox*, WebCore::RenderBlock::MarginInfo&, int&, int&)
26  0x1092d72d3 WebCore::RenderBlock::layoutBlockChildren(bool, int&)
27  0x1092d4cb7 WebCore::RenderBlock::layoutBlock(bool, int, WebCore::RenderBlock::BlockLayoutPass)
28  0x1092d4377 WebCore::RenderBlock::layout()
29  0x1094f2715 WebCore::RenderView::layout()
30  0x108906095 WebCore::FrameView::layout(bool)
31  0x10865a27b WebCore::Document::implicitClose()

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