Subject: Re: yacc and PR 4260
To: Jason R Thorpe <firstname.lastname@example.org>
From: Aymeric Vincent <Aymeric.Vincent@labri.fr>
Date: 12/26/2002 00:02:48
Jason R Thorpe <email@example.com> writes:
> On Sat, Dec 21, 2002 at 09:57:26PM +0100, Krister Walfridsson wrote:
> > PR 4260 notes that the yacc output has problems on platforms that do not
> > have ANSI C realloc(3), and thus crash on realloc(NULL, x). I don't
> > personally care about those systems, and would like to close the PR with
> > a message saying that these systems are too old to be supported. OTOH, we
> > do the #if __STDC__ song and dance regarding prototypes etc., so we are
> > trying to work on at least some non-ANSI systems...
> > So what is the "correct" thing to do?
> Desupport pre-ANSI please.
I think it's a bit sad to remove such support for the simple special
case of realloc(NULL, x) which is so easy to handle in a way that
works with pre-ANSI systems.
Yacc output is supposed to compile on as many systems as
possible. When we have a precise example of what is wrong, we could
I was going to offer to provide a patch, but looking at the PR shows
that there's already a patch. I think we could remove the two "#if
__NetBSD__" parts of it, but it looks okay otherwise.
OTOH, if we know that yacc's output fails miserably at many other
places in a pre-ANSI environment, then I heartily agree that it's not