[Webkit-unassigned] [Bug 63266] New: [Snow Leopard WebKit2 Tests] fast/workers/shared-worker-load-error.html, fast/workers/worker-context-multi-port.html, http/tests/workers/shared-worker-redirect.html, and http/tests/xhtmlmp/xhtml.xhtmlmp crashing

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=63266

           Summary: [Snow Leopard WebKit2 Tests]
                    fast/workers/shared-worker-load-error.html,
                    fast/workers/worker-context-multi-port.html,
                    http/tests/workers/shared-worker-redirect.html, and
                    http/tests/xhtmlmp/xhtml.xhtmlmp crashing
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh Intel
        OS/Version: Mac OS X 10.6
            Status: NEW
          Keywords: LayoutTestFailure, MakingBotsRed, NeedsRadar,
                    Regression
          Severity: Normal
          Priority: P2
         Component: WebKit2
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: jberlin at webkit.org
                CC: darin at apple.com, fishd at chromium.org,
                    abarth at webkit.org, japhet at chromium.org,
                    rniwa at webkit.org


fast/workers/shared-worker-load-error.html        crash log (com.apple.WebCore: WebCore::SharedWorkerScriptLoader::notifyFinished() + 197)
fast/workers/worker-context-multi-port.html        crash log (com.apple.JavaScriptCore: JSC::HandleHeap::visitWeakHandles(JSC::HeapRootVisitor&) + 120)
http/tests/workers/shared-worker-redirect.html        crash log (com.apple.WebCore: WebCore::DocumentThreadableLoader::willSendRequest(WebCore::SubresourceLoader*, WebCore::ResourceRequest&, WebCore::ResourceResponse const&) + 85)
http/tests/xhtmlmp/xhtml.xhtmlmp        crash log (com.apple.JavaScriptCore: JSC::HandleHeap::visitWeakHandles(JSC::HeapRootVisitor&) + 120)

These crashes started happening somewhere in (89499, 89505]:

http://build.webkit.org/builders/SnowLeopard%20Intel%20Release%20%28WebKit2%20Tests%29/builds/12823
http://build.webkit.org/builders/SnowLeopard%20Intel%20Release%20%28WebKit2%20Tests%29/builds/12824
http://build.webkit.org/results/SnowLeopard%20Intel%20Release%20(WebKit2%20Tests)/r89505%20(12824)/results.html

They are not appearing on the Windows WK2 bots. Only one of the 4 is skipped on Windows (all http/tests/workers).

I see 3 potential culprits:

http://trac.webkit.org/changeset/89503
http://trac.webkit.org/changeset/89504

and possibly

http://trac.webkit.org/changeset/89505

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