1 files changed, 15 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/bug734383.js b/js/src/jit-test/tests/ion/bug734383.js
new file mode 100644
index 0000000000..b3cb55a9ce
--- /dev/null
+++ b/js/src/jit-test/tests/ion/bug734383.js
@@ -0,0 +1,15 @@
+function foo(a, b) {
+    var s = "foo";
+    for (var j = 0; j < 5; j++)
+        s += a[b[j]];
+    return s;
+}
+
+var a = {a:"zero", b:"one", c:"two", d:"three", e:"four"};
+var b = ["a", "b", "c", "d", "e"];
+
+for (var i=0; i<9; i++)
+    assertEq(foo(a, b), "foozeroonetwothreefour");
+
+a.e = 4;
+assertEq(foo(a, b), "foozeroonetwothree4");