1 files changed, 12 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/bug584499-2.js b/js/src/jit-test/tests/basic/bug584499-2.js
new file mode 100644
index 000000000..bb31a731e
--- /dev/null
+++ b/js/src/jit-test/tests/basic/bug584499-2.js
@@ -0,0 +1,12 @@
+function f(x) {
+    var s = "a";
+    var last = "";
+    for (var i = 0; i < 10; i++) {
+        last = s[x];
+    }
+    return last;
+}
+
+f(0);
+
+assertEq(f(1), undefined);