diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/auto-regress/bug765280.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/auto-regress/bug765280.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,8 @@
+// |jit-test| error:Error
+
+// Binary: cache/js-dbg-64-85e31a4bdd41-linux
+// Flags:
+//
+
+function f(x = let([] = c) 1, ... __call__)  {}
+assertEq(this > f, true);