diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/arrow-functions/associativity-1.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/arrow-functions/associativity-1.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,8 @@
+// Arrow right-associativity.
+
+var t = a => b => a;
+assertEq(t('A')('B'), 'A');
+
+var curry = f => a => b => f(a, b);
+var curried_atan2 = curry(Math.atan2);
+assertEq(curried_atan2(0)(1), 0);