I've found and addressed the problems raised in this thread.

It boiled down to two issues:

(1) I misunderstood an issue related to memory management. This is
resolved and should not recur.

(2) On windows, we're using mpir, which is an ancient fork of libgmp.
This is a fixed issue for addition, but may hint at future problems,
where I'll have to re-implement missing function(s).

However, these problems of mine have dropped this update out of the
j9.5 release plan. So, for now at least, I'll plan on plodding along
in a separate branch (which will need to track the master branch for
those changes).

Thanks,

--
Raul


On Sat, Dec 2, 2023 at 5:51 PM Raul Miller <rauldmil...@gmail.com> wrote:
>
> (0) Yes, it looks like I had already taken steps to deal with the 0x
> case, and clearly they were inadequate.
>
> (1) I cannot find the message you are referring to.
>
> (2) I am plugging away, trying various approaches, maybe I'll have
> this fixed soon. (It would be faster if script/buildga.sh could be
> told to build only one instance of j, rather than all the various 32
> and 64 bit instances. It would also be faster if I did not allow
> myself to be distracted while waiting for a build to complete.)
>
> Thanks,
>
> --
> Raul
>
> On Sat, Dec 2, 2023 at 11:25 AM Henry Rich <henryhr...@gmail.com> wrote:
> >
> > A couple of messages ago I pointed to the line
> >
> >    if (unlikely(!n)) {fr(z); R X0;} /* this X0 is presumably the one
> > that happens */
> >
> > as being suspect, because fr should never be called explicitly.
> >
> > That message contained an explanatory paragraph at its end.
> >
> > hhr
> >
> > On 12/2/2023 2:57 AM, Raul Miller wrote:
> > > That sounds very plausible. Thanks.
> > >
> > > Previously I had a special value that I always used for 0x. It makes
> > > sense to be using it here.
> > >
> > > I'll try that and see if it clears things up.
> > >
> > > Thanks again,
> > >
> >
> > ----------------------------------------------------------------------
> > For information about J forums see http://www.jsoftware.com/forums.htm
----------------------------------------------------------------------
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