diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/testLoopWithUndefined1.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/testLoopWithUndefined1.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,12 @@
+function loopWithUndefined1(t, val) {
+    var a = new Array(6);
+    for (var i = 0; i < 6; i++)
+        a[i] = (t > val);
+    return a;
+}
+loopWithUndefined1(5.0, 2);     //compile version with val=int
+
+function testLoopWithUndefined1() {
+    return loopWithUndefined1(5.0).join(",");  //val=undefined
+};
+assertEq(testLoopWithUndefined1(), "false,false,false,false,false,false");