[Trent Mick]
> test_poll.py currently fails on Monterey (64-bit AIX) because of
> a difference in the system poll() function as compared to Linux.
>
> On Linux (and as required by the Signle Unix Specification:
> http://www.opengroup.org/onlinepubs/007908799/xsh/poll.html) if
> you "poll()" a bogus file descriptor you get a POLLNVAL return value in
> the 'revents' field of the structure sent to poll().
> ...
> Monterey decided to return -1 instead. [Aside: However, 'revents's type is
> "short" so the Python interface to poll() (using PyInt_FromLong) actually
> interprets that as -32768 instead.]
>
> Questions:
> 1. Can anybody offer an opinion if this is Python's or Monterey's
> problem?
Both. "Another day, another incompatible flavor of Unix(tm)." In the early
days, Guido actually hoped he could get away without a massive hack like
autoconf <wink>.
> 2. Can anybody tell me where I can browse the POSIX spec to see if this
> breaks POSIX compliance as well?
Nowhere: ISO/ANSI stds are generally never available online. They get the
bulk of their money from selling standards.
http://webstore.ansi.org/
is a good place to buy. There are about 20 POSIX-related stds documents;
the C API spec is US$245.00. You may get a cheaper answer on comp.unix.aix,
of course.
may-be-worth-more-than-$245-to-weed-out-the-wrong-answers-though-ly y'rs
- tim
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