diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/bug685313.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/bug685313.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,11 @@
+
+function foo() {
+    function D(){}
+    arr = [
+	   new (function D   (  ) { 
+		   D += '' + foo; 
+	       }), 
+        new D
+	   ];
+}
+foo();