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chromium/third_party/blink/web_tests/external/wpt/css/css-multicol/crashtests/spanner-in-overflowed-container-before-float.html 

<!DOCTYPE html>
<link rel="author" title="Morten Stenshorne" href="mailto:[email protected]">
<link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=1309859">
<div style="columns:2; column-fill:auto; height:400px;">
  <div style="height:10px;"></div>
  <div style="height:20px;">
    <div style="display:inline-block; width:10px; height:50px;"></div>
    <div>
      <div style="column-span:all;"></div>
    </div>
  </div>
  <div style="columns:2; height:100px; float:left;"></div>
</div>