Re: Retiring yap (Prolog interpreter)

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On Thu, Feb 23, 2017 at 9:18 AM, Petr Pisar <ppisar@xxxxxxxxxx> wrote:
> I'm deeply sorry I will have to retire yap package because:
>
> It crashes on i686 after updating GCC to 7
> <https://bugzilla.redhat.com/show_bug.cgi?id=1421711>.
> Last stable version is 7 years old (we have it in Fedora).
> Last development version is 4 years old (Jerry James tried to update
> but it does not work with non-lazy linking) and it fails on i686 too <https://koji.fedoraproject.org/koji/taskinfo?taskID=18014527>.
> Upstream does not respond
> <https://sourceforge.net/p/yap/mailman/message/35663387/> and playing
> with the code reveals other bugs like signed interger overflows or
> linkage failure with disabled optimizations because of wrong inlining.
> Finally I don't understand the code especially the stack-based
> interpreter.
>
> The only reverse dependency is ppl where the yap support is optional.

That was the reason I tried to update, as I need a new version of ppl,
and the latest version of ppl-yap requires the development version of
yap.  Petr pointed out a few problems with my attempt to update.  If
anybody out there is interested in keeping yap in Fedora, I'm happy to
explain what I did, and the remaining problems to be addressed.
Otherwise, I'll update ppl once yap has been retired.

Regards,
-- 
Jerry James
http://www.jamezone.org/
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