diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/testBug614653.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/testBug614653.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,10 @@
+/* Bug 614653 - This test .2 seconds with the fix, 20 minutes without. */
+for (var i = 0; i < 10; ++i) {
+    var arr = [];
+    var s = "abcdefghijklmnop";
+    for (var j = 0; j < 50000; ++j) {
+        s = "<" + s + ">";
+        arr.push(s);
+    }
+    gc();
+}