<!DOCTYPE html>
<html>
<head>
<script src="../../resources/js-test-pre.js"></script>
<script>
function f1() {
    var iframe = document.getElementById("iframe");
    iframe.srcdoc = "x";
    window.frames.event = window.event;
    gc();
}
let startedTimer = false;
function f2() {
    var h = new XMLHttpRequest();
    h.onreadystatechange = f1;
    h.open("foo", "1");
    var e = window.event;
    e.initEvent("1", true, true);
    try {
        e.currentTarget.click();
    } catch(e) { }

    if (!startedTimer) {
        setTimeout(finishJSTest, 100);
        startedTimer = true;
    }
}
</script>
</head>
<body onload="f1()">
<script>
description("This test passes if it does not crash");
jsTestIsAsync = true;
</script>
<iframe id="iframe" onload="f2()"></iframe>
<script src="../../resources/js-test-post.js"></script>
</body>
</html>