<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>