diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/bug702572.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/bug702572.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,10 @@
+eval("function f() { function g() {} return g; }");
+assertEq(f().prototype !== f().prototype, true);
+
+function f1() {
+    function g1() {
+        function h1() { return h1; }
+    }
+    return g1;
+}
+assertEq(f1().prototype !== f1().prototype, true);