<html>
  <p>Original line 1</p>
  <script src="resources/document-clear.js"></script>
  <p>Calling document.clear() from an external script should not crash.</p>
  <script>
    if (window.testRunner)
      testRunner.dumpAsText();
  </script>
  <p>If successful, there will be 4 lines total</p>
</html>