diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/bug651966.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/bug651966.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,38 @@
+
+function f(code) {
+    g = eval("(function(){" + code + "})");
+    g()
+}
+f();
+f();
+f();
+f();
+f();
+f();
+f();
+f();
+f();
+f();
+f();
+f();
+f();
+f();
+f();
+f();
+try { f("function x(){}(x())"); } catch (e) {}
+
+function f2() {
+    a = {
+        x
+    } = x, (x._)
+    function
+    x()({})
+}
+try { f2(); } catch (e) {}
+
+function f3() {
+  var x = 0;
+  with ({}) { x = 'three'; }
+  return x;
+}
+f3();