[issue4192] Subprocess error with I/O redirection to Pipes

[Hirokazu Yamamoto]

Hirokazu Yamamoto <ocean-city at m2.ccsnet.ne.jp> added the comment:

This happens because when flooder.py terminates, its stdout will be
closed, but another pipe end in receirver.py process is already closed, so

Python\sysmodule.c(1098): _check_and_flush (FILE *stream)

In this function, fflush() fails. The reason why error message is not
helpful is probably this close function is called in interpreter
termination process, other modules/objects to do so are already destroyed.

Maybe this error message can be improved in some way, but I'm not sure.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue4192>
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