From mboxrd@z Thu Jan  1 00:00:00 1970
From: random832@fastmail.com (Random832)
Date: Tue, 03 Jan 2017 09:33:44 -0500
Subject: [TUHS] MacOS X is Unix (tm)
In-Reply-To: <8168FD75-9C3E-47C1-9BA8-EADAD7D33C38@kdbarto.org>
References: <mailman.31.1483203495.3779.tuhs@minnie.tuhs.org>
 <52C99F50-E24A-4BBF-A129-180A1271B4E3@kdbarto.org>
 <586a3a23.udW0nRrOopzHoQbP%schily@schily.net>
 <8168FD75-9C3E-47C1-9BA8-EADAD7D33C38@kdbarto.org>
Message-ID: <1483454024.1265981.835921849.4F752F10@webmail.messagingengine.com>

On Tue, Jan 3, 2017, at 09:06, David wrote:
> MacOS passes this except for the si_status test. MacOS uses a signed int
> there. I’m not sure what the standard says.

The problem isn't the fact that it's signed, it's the fact that it's
only a 24-bit value (i.e. the high 8 bits are replaced with
sign-extension of bit 23). Look at the hex - expected 0x499602d2 vs
actual 0xff9602d2

However, OSX only claims compliance to Issue 6 (unistd.h _XOPEN_VERSION
600), and the text requiring that the full 32-bit value be preserved is
new to Issue 7.