diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/arrow-functions/strict-1.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/arrow-functions/strict-1.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,13 @@
+// arrow functions are not implicitly strict-mode code
+
+load(libdir + "asserts.js");
+
+var f = a => { with (a) return f(); };
+assertEq(f({f: () => 7}), 7);
+
+f = a => function () { with (a) return f(); };
+assertEq(f({f: () => 7})(), 7);
+
+f = (a = {x: 1, x: 2}) => b => { "use strict"; return a.x; };
+assertEq(f()(0), 2);
+