diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug732851.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug732851.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,10 @@
+var OMIT = {};
+var WRITABLES = [true, false, OMIT];
+{
+  var desc = {};
+  function put(field, value)
+    desc[field] = value;
+  WRITABLES.forEach(function(writable) {
+    put("writable", writable)
+  });
+};