LayoutTests/fast/parser/xml-entity-reference-expansion-3.html

<!DOCTYPE html>
<html>
<body>
<p>This tests parsing deeply nested entity references. WebKit should not hang or crash.</p>
<div id="result">Running</div>
<script>

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

const blob = new Blob([`<?xml version="1.0" standalone="no"?>
<!DOCTYPE html [
  <!ENTITY a "aaaa ">
  <!ENTITY b "&a;&a;&a;&a;&a;&a;&a;&a;&a;&a;">
  <!ENTITY c "&b;&b;&b;&b;&b;&b;&b;&b;&b;&b;">
  <!ENTITY d "&c;&c;&c;&c;&c;&c;&c;&c;&c;&c;">
  <!ENTITY e "&d;&d;&d;&d;&d;&d;&d;&d;&d;&d;">
  <!ENTITY f "&e;&e;&e;&e;&e;&e;&e;&e;&e;&e;">
  <!ENTITY g "&f;&f;&f;&f;&f;&f;&f;&f;&f;&f;">
  <!ENTITY h "&g;&g;&g;&g;&g;&g;&g;&g;&g;&g;">
  <!ENTITY i "&h;&h;&h;&h;&h;&h;&h;&h;&h;&h;">
  <!ENTITY j "&i;&i;&i;&i;&i;&i;&i;&i;&i;&i;">
  <!ENTITY j "a">
]>
<html xmlns="http://www.w3.org/1999/xhtml"><body>&j;</body></html>`], {type: "application/xml"});

const iframe = document.createElement('iframe');
iframe.onload = () => result.textContent = 'PASS';
iframe.src = URL.createObjectURL(blob);
document.body.appendChild(iframe);

</script>
</body>
</html>