[issue26935] android: test_os fails

[Martin Panter]

Martin Panter added the comment:

I think this is an Android bug. See specification <http://pubs.opengroup.org/onlinepubs/9699919799/functions/dup2.html>, fix <https://android.googlesource.com/platform/bionic/+/be52e658171edf6651895c40d1563289bafa52f7%5E!/>.

If the change is to go into Python, it would be good to include a comment admitting it is an Android workaround, rather than a general deficiency.

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nosy: +martin.panter
stage:  -> patch review

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<http://bugs.python.org/issue26935>
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