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chromium/third_party/blink/web_tests/fast/multicol/span/button-with-spanner-crash.html 

<!DOCTYPE html>
<script>
    if (window.testRunner)
        testRunner.dumpAsText();
</script>
<p>PASS if no crash or assertion failure.</p>
<div style="-webkit-columns:3;">
    <button style="display:block;">
        <div style="-webkit-column-span:all;"></div>
    </button>
    &nbsp;
</div>