<!DOCTYPE html>
<html>
<body>
<p>This tests if WebKit does not crash or hit any assertions.</p>
<script>

if (window.testRunner)
    testRunner.dumpAsText();

const host = document.createElement('div');
document.body.appendChild(host);
const shadowRoot = host.attachShadow({mode: 'closed'});
shadowRoot.innerHTML = '<div id="inner"><slot name="some-name"></slot></div>';

const innerHost = shadowRoot.getElementById('inner');
const innerShadowRoot = innerHost.attachShadow({mode: 'closed'});
innerShadowRoot.appendChild(document.createElement('slot'));
innerHost.getBoundingClientRect();

shadowRoot.querySelector('slot').remove();
const newChild = document.createElement('div');
newChild.appendChild(document.createElement('slot'));
innerHost.appendChild(newChild);

document.write('<div>PASS</div>');

</script>
</body>
</html>