dom/html/crashtests/741250.xhtml


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<input form="f" id="x" xmlns="http://www.w3.org/1999/xhtml">
<form id="f"></form>
<script>
window.addEventListener("load", function() {
  var x = document.getElementById("x");
  x.appendChild(x.cloneNode(true));
}, false);
</script>
</input>