gecko-dev/parser/htmlparser/tests/html/184029_iframe.html

<SCRIPT>
   document.write('\<script\>');
   document.write(' document.write(\'\<iframe\>\');');
   document.write(' document.write(\'\<script\>\');');
   document.write(' document.write(\'\</scr\');');
   document.write(' document.write(\'ipt\>\');');
   document.write(' document.write(\'\</iframe\>\');');
   document.write('<\/script>');
</SCRIPT>