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Date: Sun, 11 Jan 2004 03:59:20 +1100 (EST)
From: Bruce Evans <bde@zeta.org.au>
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To: Garrett Wollman <wollman@khavrinen.lcs.mit.edu>
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Subject: Re: Fwd: Re: ports/52016: New port: lang/harbour-AClipper-compatible
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On Sat, 10 Jan 2004, Garrett Wollman wrote:

> <<On Sun, 11 Jan 2004 02:03:50 +1100 (EST), Bruce Evans <bde@zeta.org.au> said:
>
> > Hmm, POSIX.1-2001 doesn't seem to require the value to be integral,
> > except tacitly since they would not be usable in cpp expressions if
> > they were floating point.
>
> This would seem to be implicit, since sysconf() returns a long.

It's tacit at best I think.

Here is the most unclear part of POSIX.1-1990 in this area:

%%%
{_POSIX_JOB_CONTROL}  If this symbol is defined, it indicates that the
                      implementation supports job control.
{_POSIX_SAVED_IDS}    [similarly]
%%%

Note that it doesn't say that anything about a value.

The unclearness is moot for these particular constants in POSIX.1-2001,
since they are no longer optional and are required to have a value
greater than 0.

BTW, FreeBSD is perfectly non-POSIX.1-2001 conformant since it intentionally
doesn't support the _POSIX_SAVED_IDS mistake.  I hope "appropriate
privilege" can be interpreted suitably weaselly to claim support without
changing the behaviour.

Bruce