diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug906284.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug906284.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,15 @@
+"use strict"
+function f() {
+    h = {}
+}
+var c = 0;
+for (var i=0; i<3; i++) {
+    try {
+	new f();
+	assertEq(0, 1);
+    } catch(e) {
+	c++;
+	assertEq(e.message.contains("undeclared variable"), true);
+    }
+}
+assertEq(c, 3);