diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/auto-regress/bug771027.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/auto-regress/bug771027.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,8 @@
+// |jit-test| error:TypeError
+
+// Binary: cache/js-dbg-32-b6aa44d8f11f-linux
+// Flags:
+//
+
+Array.prototype.iterator = (function() { { while(0) function Uint8ClampedArray() {  } } });
+assertEq(Set(["testing", "testing", 123]).size(), 2);