torture: Show sddl_decode() failure for "GWFX" access mask

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>

python/samba/tests/sddl.py

@@ -178,3 +178,9 @@ class SddlDecodeEncode(TestCase):
             sddl = sd.as_sddl(sid)
             sd2 = security.descriptor.from_sddl(sddl, sid)
             self.assertEqual(sd, sd2)
+
+    def test_multiflag(self):
+        sid = security.dom_sid("S-1-2-3-4")
+        raised = False
+        with self.assertRaises(Exception):
+            sd = security.descriptor.from_sddl("D:(A;;GWFX;;;DA)", sid)