diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/collections/Map-iterators-3.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/collections/Map-iterators-3.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,10 @@
+// A closed Map iterator does not visit new entries added after a clear().
+
+load(libdir + "iteration.js");
+
+var m = Map();
+var it = m[std_iterator]();
+assertIteratorDone(it, undefined);  // close the iterator
+m.clear();
+m.set("a", 1);
+assertIteratorDone(it, undefined);  // iterator still closed