[Webkit-unassigned] [Bug 25575] New: Synchronously mutation event fired when setAttribute() called from element constructor

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=25575

           Summary: Synchronously mutation event fired when setAttribute()
                    called from element constructor
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: eric.carlson at apple.com


The MediaControlTimelineElement constructor calls setAttribute(precisionAttr,
"float"). When used in a page that registers for mutation events, this causes a
synchronous event to be fired immediately. The event destructor derefs the
event target, the MediaControlTimelineElement, which means the element gets
destroyed before the constructor returns. Badness ensues.

Stack trace attached


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