[issue5380] pty.read raises IOError when slave pty device is closed

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

It turns out isatty() returns True for fds created by openpty(), which helps quite a bit: we can silence EIO for ttys while keeping it for non-ttys, where a low-level I/O (hardware) error should be raised properly.
Here is a patch for trunk.

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keywords: +patch
stage: needs patch -> patch review
versions: +Python 2.7, Python 3.2
Added file: http://bugs.python.org/file16859/io-openpty.patch

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