diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/testNewObject.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/testNewObject.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,8 @@
+function testNewObject()
+{
+    var a = {};
+    for (var i = 0; i < 10; ++i)
+	a = new Object();
+    return a;
+}
+assertEq(testNewObject().__proto__, {}.__proto__);