<style>
    .box { 
        shape-outside: path("M 0 0 L 200 200 0 200 z");
        float: left;
    }
</style>
<body>
    <div class="box">Pass if there is no crash or assert.</div>
    <script>
        if (window.testRunner)
            testRunner.dumpAsText();
    </script>
</body>