diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/collections/Set-clear-gc.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/collections/Set-clear-gc.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,11 @@
+// Clearing a Set removes any strong references to its elements.
+
+load(libdir + "referencesVia.js");
+
+var s = Set();
+var obj = {};
+s.add(obj);
+assertEq(referencesVia(s, "key", obj), true);
+s.clear();
+if (typeof findReferences == 'function')
+    assertEq(referencesVia(s, "key", obj), false);