diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/bug528644.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/bug528644.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,16 @@
+// Don't crash
+
+function g(foo) {
+  for (a in foo) {
+  }
+}
+
+var makegen = eval("\n\
+  (function(b) {\n\
+      var h = \n\
+        eval(\"new function() { yield print(b) }\" ); \n\
+    return h\n\
+  })\n\
+");
+
+g(makegen());