<!DOCTYPE html>
<embed id="embed"></embed>
<iframe id="iframe"></iframe>
<object id="object"></object>
<script>
if (window.testRunner)
    testRunner.dumpAsText();
  doc = new DOMParser().parseFromString("foo", "text/html");
  object.data = "x";
  var embed = document.getElementById("embed");
  iframe.contentDocument.adoptNode(embed);
  embed.bar;
  doc.body.appendChild(object);
  document.body.replaceWith("PASS if no crash.");
</script>