# HG changeset patch
# User schlamar <marc.schlaich@gmail.com>
# Date 1395052147 -3600
#      Mon Mar 17 11:29:07 2014 +0100
# Branch 2.7
# Node ID 8a566b29b73b1d5217ff4cbdfc16e89db38ab7d3
# Parent  e1c35f4bf597da1b3178c70b692b40d97f5af959
Issue20954: added TestCase.

diff -r e1c35f4bf597 -r 8a566b29b73b Lib/test/test_multiprocessing.py
--- a/Lib/test/test_multiprocessing.py	Mon Mar 17 10:39:49 2014 +0100
+++ b/Lib/test/test_multiprocessing.py	Mon Mar 17 11:29:07 2014 +0100
@@ -2431,6 +2431,24 @@
         child_flags, grandchild_flags = json.loads(data.decode('ascii'))
         self.assertEqual(child_flags, grandchild_flags)
 
+    @classmethod
+    def grandchild_hash_seed(cls):
+        pass
+
+    @classmethod
+    def child_hash_seed(cls):
+        p = multiprocessing.Process(target=cls.grandchild_hash_seed)
+        p.start()
+        p.join()
+
+    def test_hash_seed(self):  # Issue20954
+        import subprocess
+        prog = ('from test.test_multiprocessing import TestFlags; ' +
+                'TestFlags.child_hash_seed()')
+        env = os.environ.copy()
+        env['PYTHONHASHSEED'] = '2147483647'
+        subprocess.check_call([sys.executable, '-c', prog], env=env)
+
 #
 # Issue #17555: ForkAwareThreadLock
 #