Python 2.6.1 (r261:67515, Mar 26 2009, 14:44:39) 
[GCC 4.2.4 (Ubuntu 4.2.4-1ubuntu3)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from multiprocessing import Pipe
>>> a, b = Pipe()
>>> a.close()
>>> a.poll()
Bus error

amacleod@cthulhu:~$ uname -a
Linux cthulhu 2.6.24-23-generic #1 SMP Mon Jan 26 01:04:16 UTC 2009
x86_64 GNU/Linux


I'm running Ubuntu 8.04 LTS, and just installed Python 2.6.1, compiling
from source.

Python 2.6.1 (r261:67515, Mar 22 2009, 05:39:39) 
[GCC 4.2.4 (Ubuntu 4.2.4-1ubuntu4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from multiprocessing import Pipe
>>> a, b = Pipe()
>>> a.close()
>>> a.poll()
Segmentation fault

Seems like this should raise an exception.

uname -a:
Linux mememy 2.6.24-23-generic #1 SMP Thu Feb 5 15:00:25 UTC 2009 i686
GNU/Linux

Compiled Python 2.6.1 from source.

See also:

http://svn.python.org/view?view=rev&revision=68768
http://bugs.python.org/issue3311

This was checked into trunk, I don't know if it was merged to 2.6.1

OS/X, Python Trunk:

>>> from multiprocessing import Pipe
>>> a, b = Pipe()
>>> a.close()
>>> a.poll()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
IOError: handle out of range in select()
>>> 

2.6.1 Does not have the fix (I can segfault it here too). Ben, are we 
planning a 2.6.2?

2009/3/26 Jesse Noller <report@bugs.python.org>:
> 2.6.1 Does not have the fix (I can segfault it here too). Ben, are we
> planning a 2.6.2?

Yes, I think around 3.1's release, but you'll have to ask Barry for sure.

Merged back in CL 70721 on 26 maint