Re: kern/46464: lib/librumphijack/t_tcpip:ssh test case randomly fails

[Andreas Gustafsson <gson%gson.org@localhost>]

The following reply was made to PR kern/46464; it has been noted by GNATS.

From: Andreas Gustafsson <gson%gson.org@localhost>
To: Antti Kantee <pooka%NetBSD.org@localhost>
Cc: gnats-bugs%NetBSD.org@localhost
Subject: Re: kern/46464: lib/librumphijack/t_tcpip:ssh test case randomly
 fails
Date: Sun, 20 Jul 2014 16:30:40 +0300

 Antti Kantee wrote:
 > Can NetBSD's poll() return with POLLIN set in revents, but not 
 > reflecting that in the return value?  Is that legal behaviour?
 > 
 > Or is there something else fishy going on?
 
 I added some debug logging to hostpoll(), after the op_pollts() call:
 
        if ((parg->pfds[parg->nfds-1].revents & POLLIN) && !(rv > 0)) {
                fprintf(stderr, "this should not happen; rv = %d, errno = 
%d\n", (int)rv, errno);
        }
 
 and got the output:
 
     this should not happen; rv = -1, errno = 4
 
 errno 4 is EINTR.  As far as I can see, POSIX is silent on what
 revents is allowed to contain on an error return.
 -- 
 Andreas Gustafsson, gson%gson.org@localhost