Date: Wed, 30 Jun 2021 22:23:52 -0700
From: Noah Misch <noah@leadboat.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Alvaro Herrera <alvherre@alvh.no-ip.org>,
	Michael Paquier <michael@paquier.xyz>,
	Jacob Champion <pchampion@vmware.com>,
	"pgsql-hackers@postgresql.org" <pgsql-hackers@postgresql.org>,
	Daniel Gustafsson <daniel@yesql.se>, info@cspug.cz
Subject: Re: Preventing abort() and exit() calls in libpq
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On Thu, Jul 01, 2021 at 01:20:48AM -0400, Tom Lane wrote:
> Noah Misch <noah@leadboat.com> writes:
> > On Wed, Jun 30, 2021 at 11:45:10PM -0400, Tom Lane wrote:
> >> we're still left with the question of why
> >> Solaris' "nm" doesn't support the POSIX-required options.
> 
> > In POSIX, -g and -u are mutually exclusive.  Solaris ignores all but the first
> > of these in a command:
> 
> I've just re-read the POSIX spec for "nm", and I do not see anything there
> that would support that interpretation.  Still, we can try it without -g
> and see what else breaks.

https://pubs.opengroup.org/onlinepubs/9699919799/utilities/nm.html says:

  nm [-APv] [-g|-u] [-t format] file...

If the options weren't mutually-exclusive, it would say:

  nm [-APvgu] [-t format] file...