1 files changed, 9 insertions, 0 deletions
diff --git a/Lib/test/test_multibytecodec.py b/Lib/test/test_multibytecodec.py
index 0eb422ea76..7962d5e9e3 100644
--- a/Lib/test/test_multibytecodec.py
+++ b/Lib/test/test_multibytecodec.py
@@ -8,6 +8,7 @@ from test import support
 from test import test_multibytecodec_support
 from test.support import TESTFN
 import unittest, io, codecs, sys, os
+import _multibytecodec
 
 ALL_CJKENCODINGS = [
 # _codecs_cn
@@ -53,6 +54,14 @@ class Test_MultibyteCodec(unittest.TestCase):
         finally:
             support.unlink(TESTFN)
 
+    def test_init_segfault(self):
+        # bug #3305: this used to segfault
+        self.assertRaises(AttributeError,
+                          _multibytecodec.MultibyteStreamReader, None)
+        self.assertRaises(AttributeError,
+                          _multibytecodec.MultibyteStreamWriter, None)
+
+
 class Test_IncrementalEncoder(unittest.TestCase):
 
     def test_stateless(self):