<style>
html, body {
    content-visibility: auto;
}
</style>
<script>
if (window.testRunner) {
    testRunner.dumpAsText();
    testRunner.waitUntilDone();
}
onload = async () => {
    let s0 = document.createElement('script');
    s0.src = 'data:';
    document.head.appendChild(s0);
    if ('caches' in window) await caches.has('a');
    document.styleSheets[0].disabled = true;
    if ('caches' in window) await caches.has('b');
    document.styleSheets[0].disabled = false;
    document.body.offsetTop;
    setTimeout(function() { document.write('This test should not crash.'); testRunner.notifyDone(); });
};
</script>