1 files changed, 15 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/non-extensible-elements5.js b/js/src/jit-test/tests/basic/non-extensible-elements5.js
new file mode 100644
index 0000000000..00cfee2a39
--- /dev/null
+++ b/js/src/jit-test/tests/basic/non-extensible-elements5.js
@@ -0,0 +1,15 @@
+// Make sure a non-extensible proto object that's later frozen is handled
+// correctly by AddElement ICs.
+function f() {
+    var proto = {60: "ok"};
+    Object.preventExtensions(proto);
+    var o = Object.create(proto);
+    for (var i = 0; i < 65; i++) {
+	o[i] = i;
+	if (i === 50)
+	    Object.freeze(proto);
+    }
+    assertEq(o[60], "ok");
+    assertEq(o[61], 61);
+}
+f();