<!DOCTYPE html>
<html>
<body>
<p>This tests removing the id from an element when there is a form associated element observing the same ID.
WebKit should not crash.</p>
<div id="container">
<p id="foo"></p>
<form id="foo"></form>
<fieldset form="foo"></fieldset>
</div>
<script>
if (window.testRunner)
    testRunner.dumpAsText();
document.querySelector('#container p').removeAttribute('id');
container.remove();
document.write('PASS');
</script>
</body>
</html>