Patch #1303: Adapt str8 constructor to bytes (now buffer) one.
diff --git a/Lib/test/test_builtin.py b/Lib/test/test_builtin.py
index b6b45ee..9670be0 100644
--- a/Lib/test/test_builtin.py
+++ b/Lib/test/test_builtin.py
@@ -580,7 +580,8 @@
         self.assertEqual(hash(1), hash(1))
         self.assertEqual(hash(1), hash(1.0))
         hash('spam')
-        self.assertEqual(hash('spam'), hash(str8('spam')))
+        self.assertEqual(hash('spam'), hash(str8(b'spam'))) # remove str8()
+                                                    # when b"" is immutable
         hash((0,1,2,3))
         def f(): pass
         self.assertRaises(TypeError, hash, [])