[Webkit-unassigned] [Bug 45572] New: WebAccessibilityCacheImpl needs to handle invalid accessibility object ids

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=45572

           Summary: WebAccessibilityCacheImpl needs to handle invalid
                    accessibility object ids
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P1
         Component: Accessibility
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: chris.guillory at google.com


The Chromium renderer crashes when it accesses objects that have been removed from the webkit accessibility tree. 
http://code.google.com/p/chromium/issues/detail?id=54973

WebAccessibilityCacheImpl::addOrGetId should know that AccessibilityObject's with an id of 0 are invalid - they've been removed from the webkit accessibility tree.

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