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

[Charles-François Natali]

Charles-François Natali added the comment:

Here's a patch with a more robust test: the previous test worked, but assume that only stdin, stdout and stderr FDs would be open in the child process. This might not hold anymore in a near future (/dev/urandom persistent FD).
The new test is much more robust.

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stage: patch review -> commit review
Added file: http://bugs.python.org/file31443/subprocess_close-default-1.diff

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