<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
    <script>
        if (window.testRunner)
            testRunner.dumpAsText();
    </script>
    <text y="20">PASS: This should not crash.</text>
    <set id="set"/>
    <use id="use" xlink:href="#set">x</use>
    <use xlink:href="#use"/>
</svg>