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