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chromium/third_party/blink/web_tests/html/text_level_semantics/q-empty-crash.html 

<!DOCTYPE html>
<html>
<q lang="lt-US" style="text-transform:uppercase;"></q>
<p>This test passes if it doesn't crash</p>
<script>
if (window.testRunner)
    testRunner.dumpAsText();
</script>
</html>