ScriptLoader* toScriptLoaderIfPossible(Element* element)
{
    if (isHTMLScriptLoader(element))
        return toHTMLScriptElement(element)->loader();

    if (isSVGScriptLoader(element))
        return toSVGScriptElement(element)->loader();

    return 0;
}

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.