[Python-bugs-list] [ python-Bugs-803610 ] os.close(3) raises OSError: [Errno 9] Bad file descriptor

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Bugs item #803610, was opened at 2003-09-10 08:18
Message generated for change (Comment added) made by loewis
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=105470&aid=803610&group_id=5470

Category: Python Library
Group: Python 2.3
Status: Open
Resolution: None
Priority: 5
Submitted By: Syrah (syrah)
Assigned to: Nobody/Anonymous (nobody)
Summary: os.close(3) raises OSError: [Errno 9] Bad file descriptor

Initial Comment:
os.close(3) raises OSError: Bad file descriptor on

FreeBSD 5.1, with both Python 2.2.2(_2) and 2.3(_1). 

Python 2.3 on Gentoo Linux 1.4 is not affected.



Interestingly, if you call os.fstat(3) first, a

subsequent call to os.close(3) succeeds.



And yes, you do need to set up fd #3.



Here is a demonstration (on FreeBSD):



[syrah at ripple filter]$ cat test.py

import os

os.close (3)



[syrah at ripple filter]$ python test.py 3> file

Traceback (most recent call last):

  File "test.py", line 2, in ?

    os.close (3)

OSError: [Errno 9] Bad file descriptor



[syrah at ripple filter]$ cat test2.py

import os

os.fstat (3)

os.close (3)



[syrah at ripple filter]$ python test2.py 3> file



[syrah at ripple filter]$   (success!)



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>Comment By: Martin v. Löwis (loewis)
Date: 2003-09-10 18:57

Message:
Logged In: YES 
user_id=21627

Why is this a bug? 3 *is* a bad file descriptor, on the

systems which report it to be a bad file descriptor.

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