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chromium/third_party/blink/web_tests/external/wpt/css/selectors/visited-part-crash.html 

<!DOCTYPE html>
<link rel="help" href="https://crbug.com/1413904">
<style>
  .foo:visited::part(test) {}
</style>
<div class=foo>
  <a class=foo href="">Test</a>
</div>