chromium/src/third_party/blink/web_tests/fast/parser/iframe-onload-document-close-with-external-script-2.html

<script>
if (window.testRunner)
    testRunner.dumpAsText();
</script>
<script src="non-existent.js"></script>
<iframe onload="document.open(); document.write('This test passes if it does not crash'); document.close();"></iframe>