chromium/src/third_party/blink/web_tests/fast/table/colgroup-relative.html

<p>
    Test for <i><a href="rdar://problem/5530657">rdar://problem/5530657</a></i>.
</p>
<p>
    This tests for a crash during relayout when a &lt;colgroup> is relative-positioned.
</p>
<table id="table">
    <colgroup style="position: relative;"></colgroup>
</table>
<script>
    if (window.testRunner)
        testRunner.dumpAsText();

    document.body.offsetTop;
    document.getElementById("table").style.fontSize = "20px";
</script>