third_party/blink/web_tests/fast/dom/Window/register-feature-in-detached-window-crash.html - chromium/src - Git at Google

 <body>
 PASS if no crash.
 <iframe id="i" src="about:blank"></iframe>
 <script>
 if (window.testRunner)
   testRunner.dumpAsText();
 var i_win = i.contentWindow;
 i.remove();
 i_win.addEventListener('unload', () => {});
 </script>
 </body>
	<body>
	PASS if no crash.
	<iframe id="i" src="about:blank"></iframe>
	<script>
	if (window.testRunner)
	testRunner.dumpAsText();
	var i_win = i.contentWindow;
	i.remove();
	i_win.addEventListener('unload', () => {});
	</script>
	</body>