LayoutTests/fast/css/css-anchor-position/anchor-container-crash.html

<style>

.anchor {
  position: absolute;
  anchor-name: --anchor;
}

.target {
  position: fixed;
  container-type: size;
}

.target-1 {
  anchor-name: --target-1;
  inset: anchor(--anchor outside);
}

.target-2 {
  inset: anchor(--anchor inside);
}

.target-3 {
  inset: anchor(--target-1 inside);
}

</style>

<div class="anchor">This test passes if it does not crash.</div>

<div class="target target-1"></div>
<div class="target target-2"></div>
<div class="target target-3"></div>

<script>

if (window.testRunner)
  testRunner.dumpAsText();

</script>