Re: [PATCH]: multiple problem with the poll module

[Paolo Bonzini]

> I have been experiencing several problem with the poll module,
> especially under MacOS X.

I was about to submit a patch for poll to fix some of these issues, but 
I prefer yours much more if it works.  In fact, the FIONREAD ioctl is a 
hack and my patch added yet another hack instead of using the trick of 
having a length of zero.

> The module make the following assumption (quoting from the source): "An
> hung up descriptor does not increase the return value".

The original code did not have this assumption, and in fact I had to 
write my code around this behavior of gnulib's poll, when I ported GNU 
Smalltalk to Mac OS X.

I don't remember if it was Paul or Bruno who suggested that POLLHUP does 
not increase the return value.  What do you think?  If this was a 
previous mistake, I think that we should apply Yoann's patch, though 
with some cosmetic (coding standards) fixes.

Paolo