diff -r 000000000000 -r 6474c204b198 js/src/tests/ecma_5/extensions/destructuring-__proto__-shorthand-assignment.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/ecma_5/extensions/destructuring-__proto__-shorthand-assignment.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,49 @@
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+var gTestfile = 'destructuring-__proto__-shorthand-assignment.js';
+var BUGNUMBER = 963641;
+var summary = "{ __proto__ } should work as a destructuring assignment pattern";
+
+print(BUGNUMBER + ": " + summary);
+
+/**************
+ * BEGIN TEST *
+ **************/
+
+function objectWithProtoProperty(v)
+{
+  var obj = {};
+  return Object.defineProperty(obj, "__proto__",
+                               {
+                                 enumerable: true,
+                                 configurable: true,
+                                 writable: true,
+                                 value: v
+                               });
+}
+
+var { __proto__ } = objectWithProtoProperty(42);
+assertEq(__proto__, 42);
+
+({ __proto__ } = objectWithProtoProperty(17));
+assertEq(__proto__, 17);
+
+function nested()
+{
+  var { __proto__ } = objectWithProtoProperty("fnord");
+  assertEq(__proto__, "fnord");
+
+  ({ __proto__ } = objectWithProtoProperty(undefined));
+  assertEq(__proto__, undefined);
+}
+nested();
+
+/******************************************************************************/
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);
+
+print("Tests complete");