PASS if no crash.
<svg>
<text x="1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1" id="textElement">
<set attributeName="x" to="0"/>
</svg>
<script>
if (window.testRunner) {
    testRunner.dumpAsText();
    testRunner.waitUntilDone();
}
setTimeout(function() {
    textElement.x.animVal.getItem(0);
    if (window.testRunner)
        testRunner.notifyDone();
}, 0);
</script>