diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug756247.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug756247.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,13 @@
+function foo(i) {
+    var n = 0;
+    for (var i = 0; i < false; i++)
+        n = a++;
+    assertEq(n, 0);
+}
+var a = foo(10);
+
+function bar(x) {
+    var y = +(x ? x : "foo");
+    assertEq(y, 10);
+}
+bar(10);