diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/new-10.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/new-10.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,15 @@
+function O(a) {
+    this.x = 20;
+    var ret = a ? {x: 10} : 26;
+    return ret;
+}
+function test() {
+    for (var i=0; i<100; i++) {
+        var o = new O((i & 1) == 1);
+        if (i & 1)
+            assertEq(o.x, 10);
+        else
+            assertEq(o.x, 20);
+    }
+}
+test();