<!DOCTYPE html>

<html>
<head>
    <style>
    .box {
        height: 300px;
        width: 300px;
        padding: 10px;
        position: absolute;
        border: 1px solid black;
        transform: translateZ(0);
        transform-style: preserve-3d;
        clip: rect(10px, 200px, 200px, 10px);
    }
    </style>
    <script>
        if (window.testRunner)
            testRunner.dumpAsText();
    </script>
</head>
<body>
<div class="box">
    <div class="box">
        This test should not assert in debug builds.
    </div>
</div>
</body>
</html>