diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/auto-regress/bug490776.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/auto-regress/bug490776.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,37 @@
+// |jit-test| error:TypeError
+
+// Binary: cache/js-dbg-32-7504904b5f8f-linux
+// Flags: -j
+//
+Object.extend = function(destination, source) {
+    for (var property in source)
+    destination[property] = source[property]
+}
+Object.extend(Function.prototype, {
+    curry: function() {
+        var __method = this,
+        args = $A(arguments)
+        return function() {
+            return __method(
+            arguments)
+        }
+    },
+    wrap: function(wrapper) {
+        return function() { ([](
+            $A(arguments)))
+        }
+    }
+})
+function $A(iterable) {
+    var length = iterable.length
+    while (length--);
+}
+var ga = {
+    c: 3,
+    d: 4
+}
+ga.
+__defineGetter__("", /x/.test.wrap("").curry(true, ""))
+for (var p in ga) {
+    ga[p]
+}