diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/bug662044.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/bug662044.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,12 @@
+eval("var OBJ = new MyObject(true); OBJ.valueOf()") 
+function MyObject( value ) {
+  this.valueOf = new Function( "return this.value" );
+}
+eval("\
+var VERSION = \"ECMA_1\";\
+var DATE1 = new Date();\
+var MYOB1 = new MyObject( DATE1 );\
+function MyProtoValuelessObject() {}\
+function Function() {\
+  __proto__[MyProtoValuelessObject] = VERSION;\
+}");