<body>
PASS if no crash.
<script>
if (window.testRunner)
testRunner.dumpAsText();
new AccessibleNode().appendChild(new AccessibleNode());
</script>
</body>
<body>
PASS if no crash.
<script>
if (window.testRunner)
testRunner.dumpAsText();
new AccessibleNode().appendChild(new AccessibleNode());
</script>
</body>