<!DOCTYPE html>
<title>Object element moveBefore() regression test</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>

<b id="p"><object>

<script>
test(t => {
  // Per https://crbug.com/373924127, simply moving an object element would
  // crash, due to an internal subframe count mechanism getting out of sync.
  p.moveBefore(p.lastChild, p.firstChild);
}, "Moving an object element does not crash");
</script>
