<html>
<head>
<script>
function start () {
  document.location.assign('abc')
  SpecialPowers.forceGC()
  SpecialPowers.forceCC()
  const XHR = new XMLHttpRequest()
  XHR.open('GET', 'data:text/html,1', false)
  XHR.send()
}
window.addEventListener('load', start)
</script>
</head>
<body>
<svg></svg>
</body>
</html>
