Codebase Browser
chromium
Go to App

chromium/third_party/blink/web_tests/fast/multicol/negative-margins-crash.html 

<!DOCTYPE html>
<script>
    if (window.testRunner)
         testRunner.dumpAsText();
</script>
<p>PASS if no crash or assertion failure.</p>
<div style="-webkit-columns:2;">
    <br>
    <div style="-webkit-column-span:all;"></div>
    <div style="margin-bottom:-100px;"></div>
    <div style="-webkit-column-span:all;"></div>
</div>