diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_8_5/regress/regress-634210-4.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_8_5/regress/regress-634210-4.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,20 @@
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+function outer() {
+    function f() {}
+    f.p = function() {};
+    Object.seal(f);
+    return f.p;
+}
+
+var m1 = outer();
+var m2 = outer();
+assertEq(m1 === m2, false);
+
+m1.foo = "hi";
+assertEq(m2.foo, undefined);
+
+reportCompare(0, 0, "ok");