diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/bug732693.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/bug732693.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,10 @@
+var res = 0;
+var o = {__proto__: function() { res++; }};
+
+function f() {
+    for (var i=0; i<70; i++) {
+        o.__proto__();
+    }
+}
+f();
+assertEq(res, 70);