diff -r 000000000000 -r 6474c204b198 modules/libjar/test/unit/test_bug453254.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/modules/libjar/test/unit/test_bug453254.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,12 @@
+function run_test() {
+  const zipCache = Components.classes["@mozilla.org/libjar/zip-reader-cache;1"]
+                             .createInstance(Components.interfaces.nsIZipReaderCache);
+  zipCache.init(1024);
+  try {
+    zipCache.getZip(null);
+    do_throw("Shouldn't get here!");
+  } catch (e if ((e instanceof Components.interfaces.nsIException) &&
+                 (e.result == Components.results.NS_ERROR_INVALID_POINTER))) {
+    // do nothing, this test passes
+  }
+}