[issue18763] subprocess: file descriptors should be closed after preexec_fn is called

[Gregory P. Smith]

Gregory P. Smith added the comment:

I don't see a patch attached, but I do not recall any good reason off the top of my head for preexec_fn to be called as late as it is.  Moving it up to be called before the fd closing loop makes sense as a bug fix.

All bets are off when it comes to safe behavior for preexec_fn users anyways. :)

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18763>
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