# 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 b8df3ef164dda3f53943f07618a2c19f8eaf07da
# Parent  67ada6ab7fe25219ca522a5dc1631a910b783884
Issue20954: fixed possible MemoryError in _args_from_interpreter_flags.

diff -r 67ada6ab7fe2 -r b8df3ef164dd Lib/subprocess.py
--- a/Lib/subprocess.py	Thu Mar 13 16:17:11 2014 -0400
+++ b/Lib/subprocess.py	Mon Mar 17 11:29:07 2014 +0100
@@ -505,6 +505,8 @@
     for flag, opt in flag_opt_map.items():
         v = getattr(sys.flags, flag)
         if v > 0:
+            if flag == 'hash_randomization':
+                v = 1  # Handle specification of an exact seed
             args.append('-' + opt * v)
     for opt in sys.warnoptions:
         args.append('-W' + opt)
diff -r 67ada6ab7fe2 -r b8df3ef164dd Lib/test/test_multiprocessing.py
--- a/Lib/test/test_multiprocessing.py	Thu Mar 13 16:17:11 2014 -0400
+++ 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
 #