<style>
* { 
    border-bottom: green solid; 
    margin: 0px; 
}
</style>
<script>
if (window.testRunner) {
    testRunner.dumpAsText();
    testRunner.waitUntilDone();
}
function eventhandler() {
    dd.before(a);
    document.caretRangeFromPoint(0,0);
    if (window.testRunner)
        testRunner.notifyDone();
}
</script>
<h6>
<a id="a"></a>
</h6>
<dd id="dd"></dd>
<svg>
PASS if no crash.
<set attributeName="dominant-baseline" onbegin="eventhandler()" />