[Webkit-unassigned] [Bug 25759] New: [Invalid memory write] HTMLCanvasElement object accessed after deletion
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Wed May 13 14:06:08 PDT 2009
https://bugs.webkit.org/show_bug.cgi?id=25759
Summary: [Invalid memory write] HTMLCanvasElement object accessed
after deletion
Product: WebKit
Version: 528+ (Nightly build)
Platform: PC
URL: LayoutTests/fast/canvas/canvas-as-image.html
OS/Version: Windows XP
Status: UNCONFIRMED
Severity: Normal
Priority: P2
Component: HTML DOM
AssignedTo: webkit-unassigned at lists.webkit.org
ReportedBy: kuchhal at yahoo.com
Webkit r43650
Debug Webkit using Safari and open LayoutTests/fast/canvas/canvas-as-image.html
in Safari. When the page gets unloaded:
Document.cpp:420 - m_cssCanvasElements.clear();
ends up destroying canvas element
Later when Document gets deleted, CSSCanvasValue::~CSSCanvasValue() gets called
which tries to call HTMLCanvasElement::setObserver() on an object that has
already been deleted.
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