LayoutTests/fast/ruby/before-table-doesnt-crash.html

<meta http-equiv="refresh" content="1;url=" />
<style>
    ruby::before {
        display: block;
        content: url("http://xx");
    }
</style>
<ruby>
    <ruby>
        <ruby>
            <style>
                ruby {
                    float: right;	
                }
            </style>
        </ruby>
    </ruby>
</ruby>
<script>
    if (window.testRunner)
        testRunner.dumpAsText();
</script>
This test passes if it doesn't crash.