<!DOCTYPE html>
<title>Should not crash on circular filter reference containing an svg under svg.</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>test(()=>{})</script>
<svg id="svg" filter="url(#filter)">
  <filter id="filter">
    <feImage xlink:href="#svg"></feImage>
  </filter>
  <svg overflow="hidden" width="20" height="20">
    <rect fill="black" width="20" height="20"></rect>
  </svg>
</svg>