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+<!DOCTYPE HTML>
+<!-- vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: -->
+<html>
+ <!-- Any copyright is dedicated to the Public Domain.
+ - http://creativecommons.org/publicdomain/zero/1.0/ -->
+<head>
+ <script src="/tests/SimpleTest/SimpleTest.js"></script>
+</head>
+<body>
+ <iframe id="f" src="about:blank"></iframe>
+ <script type="text/javascript">
+SimpleTest.waitForExplicitFinish();
+
+var script = SpecialPowers.loadChromeScript(() => {
+ /* eslint-env mozilla/chrome-script */
+ Services.obs.addObserver(function onExamResp(subject, topic, data) {
+ let channel = subject.QueryInterface(Ci.nsIHttpChannel);
+ if (!channel.URI.spec.startsWith("http://example.org")) {
+ return;
+ }
+ Services.obs.removeObserver(onExamResp, 'http-on-examine-response');
+ channel.suspend();
+ Promise.resolve().then(() => {
+ channel.resume();
+ });
+ }, 'http-on-examine-response');
+
+ sendAsyncMessage('start-test');
+});
+
+script.addMessageListener('start-test', () => {
+ const iframe = document.getElementById('f');
+
+ iframe.contentWindow.onunload = function () {
+ info('initiate sync XHR during the page loading');
+ let xhr = new XMLHttpRequest();
+ xhr.open('GET', window.location, false);
+ xhr.send(null);
+ ok(true, 'complete without crash');
+ script.destroy();
+ SimpleTest.finish();
+ }
+
+ iframe.src = 'http://example.org';
+});
+ </script>
+</body>
+</html>