diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/auto-regress/bug678090.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/auto-regress/bug678090.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,24 @@
+// |jit-test| error:ReferenceError
+
+// Binary: cache/js-dbg-64-609f37c36bd7-linux
+// Flags: -j -m -a
+//
+
+function toSource(arr) {
+  for (i=0; i<len; i++) {}
+}
+test();
+function test() {
+  function gen() {
+    var c = test;
+    try {
+      yield c;
+    } finally {
+      this.toSource();
+    }
+  }
+  var iter = gen();
+  for (i in iter) {
+    500();
+  }
+}