From 659a6f562b0a6ed375b4708603a75150ed520694 Mon Sep 17 00:00:00 2001
From: Benjamin Peterson <benjamin@python.org>
Date: Sat, 1 Mar 2014 19:14:12 -0500
Subject: [PATCH] fix test_posix.test_initgroups to work without supplemental
 groups (closes #20249)

---
 Lib/test/test_posix.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Lib/test/test_posix.py b/Lib/test/test_posix.py
index 9408e5c1b58..5c09ebfe8e4 100644
--- a/Lib/test/test_posix.py
+++ b/Lib/test/test_posix.py
@@ -1144,7 +1144,7 @@ class PosixGroupsTester(unittest.TestCase):
     def test_initgroups(self):
         # find missing group
 
-        g = max(self.saved_groups) + 1
+        g = max(self.saved_groups or [0]) + 1
         name = pwd.getpwuid(posix.getuid()).pw_name
         posix.initgroups(name, g)
         self.assertIn(g, posix.getgroups())