1 files changed, 10 insertions, 0 deletions
diff --git a/js/xpconnect/tests/unit/test_bug711404.js b/js/xpconnect/tests/unit/test_bug711404.js
new file mode 100644
index 000000000..77a5ce40a
--- /dev/null
+++ b/js/xpconnect/tests/unit/test_bug711404.js
@@ -0,0 +1,10 @@
+const Cc = Components.classes;
+const Ci = Components.interfaces;
+
+function run_test()
+{
+  var p = Cc["@mozilla.org/hash-property-bag;1"].
+          createInstance(Ci.nsIWritablePropertyBag2);
+  p.setPropertyAsInt64("a", -4000);
+  do_check_neq(p.getPropertyAsUint64("a"), -4000);
+}