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+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=456262
+-->
+<head>
+ <title>Test for Bug 456262</title>
+ <script src="/tests/SimpleTest/SimpleTest.js"></script>
+ <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=456262">Mozilla Bug 456262</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+<script type="application/javascript">
+
+/** Test for Bug 456262 **/
+
+function runTest() {
+ document.expando = document;
+ document.documentElement.expando = document;
+ document.documentElement.setAttribute("foo", "bar");
+ document.documentElement.getAttributeNode("foo").expando = document;
+ SpecialPowers.gc();
+ ok(document.expando, "Should have preserved the expando!");
+ ok(document.documentElement.expando, "Should have preserved the expando!");
+ ok(document.documentElement.getAttributeNode('foo').expando,
+ "Should have preserved the expando!");
+}
+
+runTest();
+
+</script>
+</pre>
+</body>
+</html>