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+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=504862
+-->
+<head>
+ <title>Test for Bug 504862</title>
+ <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+ <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body onload="runTest()">
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=504862">Mozilla Bug 504862</a>
+<script class="testbody" type="text/javascript">
+
+/** Test for Bug 504862 **/
+SimpleTest.waitForExplicitFinish();
+function onMsgRcv(event)
+{
+ is(event.data, "args: undefined", "Unexpected cross origin dialog arguments.");
+}
+
+function runTest() {
+ if ("showModalDialog" in window) {
+ window.addEventListener("message", onMsgRcv, false);
+
+ var result = window.showModalDialog("file_bug504862.html", "my args");
+ // NB: We used to clear returnValue on each navigation, but now we do a
+ // security check on access, so we can safely make returnValue live on
+ // the browsing context, per spec.
+ is(result, 3, "window sees previous dialog documents return value.");
+
+ result = window.showModalDialog("http://test1.example.com/tests/dom/tests/mochitest/bugs/file_bug504862.html", "my args");
+
+ is(result, undefined, "Able to see return value from cross origin dialog.");
+ } else {
+ ok(true, "nothing to do in e10s mode");
+ }
+
+ SimpleTest.finish();
+}
+
+</script>
+</pre>
+</body>
+</html>