[issue19752] test_os failure on Solaris 10

[STINNER Victor]

New submission from STINNER Victor:

It looks like a regression was introduced in Python 3.4 (the test pass on Python 3.3). It may be related to the PEP 446 (non inheritable file descriptors).

http://buildbot.python.org/all/builders/SPARC Solaris 10 (cc%2C 32b) [SB] 3.x/builds/1574/steps/test/logs/stdio 

======================================================================
ERROR: test (test.test_openpty.OpenptyTest)
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Traceback (most recent call last):
  File "/home/cpython/buildslave/cc-32/3.x.snakebite-sol10-sparc-cc-32/build/Lib/test/test_openpty.py", line 12, in test
    master, slave = os.openpty()
PermissionError: [Errno 13] Permission denied

----------
messages: 204207
nosy: haypo
priority: normal
severity: normal
status: open
title: test_os failure on Solaris 10
versions: Python 3.4

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<http://bugs.python.org/issue19752>
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