diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/arrow-functions/params-rest-1.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/arrow-functions/params-rest-1.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,5 @@
+// Rest parameters are allowed in arrow functions.
+
+var A = (...x) => x;
+assertEq(A().toSource(), "[]");
+assertEq("" + A(3, 4, 5), "3,4,5");