diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_8_5/regress/regress-554955-5.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_8_5/regress/regress-554955-5.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,30 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+function f(s) {
+    if (s) {
+        function b() { }
+    }
+    return function(a) {
+        eval(a);
+        return b;
+    };
+}
+
+var b = 1;
+var g1 = f(false);
+var g2 = f(true);
+
+/* Call the lambda once, caching a reference to the global b. */
+g1('');
+
+/*
+ * If this call sees the above cache entry, then it will erroneously use the
+ * global b.
+ */
+assertEq(typeof g2(''), "function");
+
+reportCompare(true, true);