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chromium
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chromium/third_party/blink/web_tests/fast/loader/frame-detach-during-onreadystatechange-loading.html 

<body>
PASS if no crash.
<script>
if (window.testRunner)
  testRunner.dumpAsText();

var i = document.createElement("iframe");
i.id = "i";
i.srcdoc = "";
document.body.appendChild(i);
i.contentWindow.addEventListener('readystatechange', () => {
  if (i.contentDocument.readyState == "loading")
    i.remove();
}, true);
</script>
</body>