<html  class="reftest-wait">
  <head>
    <script>
      function test() {
        let ac = new AbortController();
        scheduler.postTask(()=> { ac.abort(); throw "Foobar";  }, { signal: ac.signal });
        scheduler.postTask(()=> document.documentElement.removeAttribute('class'));
      }
    </script>
    <style>
    </style>
  </head>
  <body onload="test()">
  </body>
</html>
