diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/collections/bug-743101.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/collections/bug-743101.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,7 @@
+load(libdir + "asserts.js");
+
+var g = newGlobal();
+for (var cls of [Map, Set]) {
+    var getter = Object.getOwnPropertyDescriptor(cls.prototype, "size").get;
+    assertThrowsInstanceOf(function () { getter.apply(g, []); }, g.TypeError);
+}