<!DOCTYPE html>
<html>
<body>
<script>

function test() {
  const xhr = new XMLHttpRequest();
  const frame = document.createElement("frame");
  document.documentElement.appendChild(frame);
  const win = frame.contentWindow;
  const div = document.createElement("div");
  div.insertBefore(frame, div.childNodes[0]);
  SpecialPowers.forceCC();
  SpecialPowers.gc();
  xhr.open("P", "", false);
  xhr.send();
  win.fetch(null, {}).then(function(arg14) {});
}

for (let i = 0; i < 10; i++) {
  test();
}

</script>
</body>
</html>
