<?xml version="1.0" encoding="utf-8"?>
<svg:svg xmlns:svg="http://www.w3.org/2000/svg"
         xmlns="http://www.w3.org/1999/xhtml">
<svg:text>This test passes if it does not crash.</svg:text>
<script><![CDATA[
if (testRunner)
    testRunner.dumpAsText();
class MyElement extends HTMLElement {}
customElements.define('my-element', MyElement);
]]></script>
<my-element></my-element>
<element-without-definition></element-without-definition>
<script><![CDATA[
document.documentElement.insertAdjacentHTML("beforeend", "<my-element></my-element>");
]]></script>
</svg:svg>