diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/new-bound-function.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/new-bound-function.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,20 @@
+var funProto = Function.prototype;
+assertEq(Object.getOwnPropertyDescriptor(funProto, "prototype"), undefined);
+
+function Point(x, y) { this.x = x; this.y = y; }
+
+var YAxisPoint = Point.bind(null, 0);
+
+assertEq(YAxisPoint.prototype, undefined);
+
+var oldPoint;
+for (var i = 0, sz = 9; i < sz; oldPoint = point, i++)
+{
+  var point = new YAxisPoint(5);
+  assertEq(point === oldPoint, false);
+  assertEq(point.x, 0);
+  assertEq(point.y, 5);
+  assertEq(Object.getOwnPropertyDescriptor(funProto, "prototype"), undefined);
+  assertEq(Object.getOwnPropertyDescriptor(YAxisPoint, "prototype"), undefined);
+}
+