diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/auto-regress/bug580200.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/auto-regress/bug580200.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,12 @@
+// |jit-test| error:TypeError
+
+// Binary: cache/js-dbg-64-c271aa43c7ab-linux
+// Flags:
+//
+(function () {
+    x = Proxy.create((function () {
+        return {
+            enumerateOwn: function () Object.getOwnPropertyDescriptor
+        }
+    })(), [])
+})()(uneval(this))