[issue16327] subprocess.Popen leaks file descriptors on os.fork() failure

[Mark Gius]

Mark Gius added the comment:

Doesn't exhibit when execve fails, because by the time execve has been reached we've closed the pipes that we're supposed to close on the parent process, and the pipes that are meant to remain open on the parent process get caught by existing cleanup code.  It's unfortunately got to fail somewhere in the vicinity of the fork to fake it using the actual _execute_child.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue16327>
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