diff -r 000000000000 -r 6474c204b198 netwerk/test/unit/test_bug376865.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/netwerk/test/unit/test_bug376865.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,20 @@
+function run_test() {
+  var stream = Cc["@mozilla.org/io/string-input-stream;1"].
+    createInstance(Ci.nsISupportsCString);
+  stream.data = "foo bar baz";
+
+  var pump = Cc["@mozilla.org/network/input-stream-pump;1"].
+    createInstance(Ci.nsIInputStreamPump);
+  pump.init(stream, -1, -1, 0, 0, false);
+
+  // When we pass a null listener argument too asyncRead we expect it to throw
+  // instead of crashing.
+  try {
+    pump.asyncRead(null, null);
+  }
+  catch (e) {
+    return;
+  }
+
+  do_throw("asyncRead didn't throw when passed a null listener argument.");
+}