diff -r 000000000000 -r 6474c204b198 modules/libjar/test/unit/test_bug458158.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/modules/libjar/test/unit/test_bug458158.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,11 @@
+function run_test() {
+  var zReader = Components.classes["@mozilla.org/libjar/zip-reader;1"]
+                        .createInstance(Components.interfaces.nsIZipReader);
+  try {
+    zReader.open(null);
+    do_throw("Shouldn't get here!");
+  } catch (e if (e instanceof Components.interfaces.nsIException &&
+                 e.result == Components.results.NS_ERROR_NULL_POINTER)) {
+    // do nothing, this test passes
+  }
+}