diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/generators/next-on-finished.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/generators/next-on-finished.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,6 @@
+function*g(){ };
+o = g();
+o.next();
+result = o.next();
+assertEq(result.done, true);
+assertEq(o.value, undefined);