diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/testImplicitArgumentsInGenExprs.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/testImplicitArgumentsInGenExprs.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,5 @@
+assertEq(((function() arguments) for (x in [1])).next()(42)[0], 42);
+assertEq(((function() {return arguments}) for (x in [1])).next()(42)[0], 42);
+assertEq(((function() {return arguments[0] + arguments[1]}) for (x in [1])).next()(41,1), 42);
+assertEq(((function() {return arguments[0] + (function() { return arguments[0]})(arguments[1])}) for (x in [1])).next()(41,1), 42);
+assertEq(((function() { var arguments = 3; return arguments}) for (x in [1])).next()(42), 3);