As of 2.5.3, calling accept() on an AF_UNIX socket fails on arm. The
following exception occurs:

SystemError: Negative size passed to PyString_FromStringAndSize

I have attached a test program that creates a socket and connects to it.
It works on x86-64 but fails on armeb (gcc 4.1.2).

This failure has been noted a few times by the arm buildbot too:
http://archives.free.net.ph/message/20081012.121034.89069ea2.en.html

It's already fixed in 2.6.x in rev 60214. I applied the same change to
2.5.4 and the problem was resolved.

No further bug fixes are accepted for Python 2.5. Closing this as "won't
fix".

Thanks for your feedback, but I'm a bit confused by the note on the web
site:

"This is the last bugfix release of Python 2.5. Python 2.5 is now in
bugfix-only mode; no new features are being added."

This implies further bug fixes are possible (and further fixes were just
made to 2.4 despite the above comment about 2.4.5). 

Also it's a regression from 2.5.2, which must be of some concern?

> "This is the last bugfix release of Python 2.5. Python 2.5 is now in
> bugfix-only mode; no new features are being added."

Thanks for pointing that out; I have fixed the page now.

> Also it's a regression from 2.5.2, which must be of some concern?

It is; and it is unfortunate that this wasn't fixed before the release.
However, support for AF_UNIX sockets on ARM is not important enough
to warrant another bug fix release.

Understood.

Would it be appropriate to list this issue on the known bugs page?
http://www.python.org/download/releases/2.5.4/bugs/

I can't reproduce it on x86, but it's probably not ARM specific. It
might even be a compiler bug. I tried the same version on x86 and x86-64
and didn't have a problem.

Thanks.