Bug 86403 - ASSERTION FAILED: m_verticalScrollbarPainterDelegate on recent builds
Summary: ASSERTION FAILED: m_verticalScrollbarPainterDelegate on recent builds
Status: RESOLVED FIXED
Alias: None
Product: WebKit
Classification: Unclassified
Component: Layout and Rendering (show other bugs)
Version: 528+ (Nightly build)
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Beth Dakin
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2012-05-14 14:22 PDT by Beth Dakin
Modified: 2012-05-14 14:47 PDT (History)
4 users (show)

See Also:

Attachments
Patch (1.87 KB, patch)
2012-05-14 14:30 PDT, Beth Dakin 		simon.fraser: review+
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Description Beth Dakin 2012-05-14 14:22:57 PDT 
I have occasionally encountered this on recent builds:


ASSERTION FAILED: m_horizontalScrollbarPainterDelegate
/Volumes/Big/Source/Labyrinth/OpenSource/Source/WebCore/platform/mac/ScrollAnimatorMac.mm(873) : virtual void WebCore::ScrollAnimatorMac::willRemoveHorizontalScrollbar(WebCore::Scrollbar *)
1   0x10377770f WebCore::ScrollableArea::willRemoveHorizontalScrollbar(WebCore::Scrollbar*)
2   0x10356a4b2 WebCore::RenderLayer::destroyScrollbar(WebCore::ScrollbarOrientation)
3   0x10356a213 WebCore::RenderLayer::~RenderLayer()
4   0x10356a095 WebCore::RenderLayer::~RenderLayer()
5   0x10356a059 WebCore::RenderLayer::~RenderLayer()
6   0x10356f385 WebCore::RenderLayer::destroy(WebCore::RenderArena*)
7   0x1035022a5 WebCore::RenderBoxModelObject::destroyLayer()
8   0x1035e3bc7 WebCore::RenderObject::willBeDestroyed()
9   0x103502373 WebCore::RenderBoxModelObject::willBeDestroyed()
10  0x1034e2820 WebCore::RenderBox::willBeDestroyed()
11  0x10346e9b2 WebCore::RenderBlock::willBeDestroyed()
12  0x1035e3d4d WebCore::RenderObject::destroy()
13  0x1035e3c4d WebCore::RenderObject::destroyAndCleanupAnonymousWrappers()
14  0x10338bfb0 WebCore::Node::detach()
15  0x1025728db WebCore::ContainerNode::detach()
16  0x10291890b WebCore::Element::detach()
17  0x102574da7 WebCore::ContainerNode::detachChildren()
18  0x1025728c9 WebCore::ContainerNode::detach()
19  0x10291890b WebCore::Element::detach()
20  0x102574da7 WebCore::ContainerNode::detachChildren()
21  0x1025728c9 WebCore::ContainerNode::detach()
22  0x10291890b WebCore::Element::detach()
23  0x102574da7 WebCore::ContainerNode::detachChildren()
24  0x1025728c9 WebCore::ContainerNode::detach()
25  0x102719b0a WebCore::Document::detach()
26  0x102719e33 WebCore::Document::prepareForDestruction()
27  0x1029e0dd6 WebCore::Frame::setView(WTF::PassRefPtr<WebCore::FrameView>)
28  0x1029e37bd WebCore::Frame::createView(WebCore::IntSize const&, WebCore::Color const&, bool, WebCore::IntSize const&, bool, WebCore::ScrollbarMode, bool, WebCore::ScrollbarMode, bool)
29  0x100a5827e WebKit::WebFrameLoaderClient::transitionToCommittedForNewPage()
30  0x1029f621d WebCore::FrameLoader::transitionToCommitted(WTF::PassRefPtr<WebCore::CachedPage>)
31  0x1029f576b WebCore::FrameLoader::commitProvisionalLoad()
LEAK: 1 WebPageProxy
LEAK: 1 WebContext

Patch forthcoming.
Comment 1 Radar WebKit Bug Importer 2012-05-14 14:24:12 PDT 
<rdar://problem/11448841>
Comment 2 Beth Dakin 2012-05-14 14:27:10 PDT 
This appears to be a regression from http://trac.webkit.org/changeset/116476 and it occurs when you reload a page that contains a RenderLayer with a custom scrollbar. I can't seem to get it to happen in DRT though.
Comment 3 Radar WebKit Bug Importer 2012-05-14 14:27:51 PDT 
<rdar://problem/11448891>
Comment 4 Beth Dakin 2012-05-14 14:30:04 PDT 
Created attachment 141791 [details]
Patch
Comment 5 Beth Dakin 2012-05-14 14:47:14 PDT 
Thanks Simon! http://trac.webkit.org/changeset/117004