diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug875804.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug875804.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,11 @@
+
+eval('(function () {\
+function range(n) {\
+  for (var i = 0; i < 5000; i++)\
+    yield i;\
+}\
+var r = range(10);\
+var i = 0;\
+for (var x in r)\
+  assertEq(x,i++);\
+' + '})();');