[PD] Fwd: Re: [expr] external crashing pd

[Ivica Bukvic]

Forgot to include pd-list...
---------- Forwarded message ----------
From: "Ivica Bukvic" <ico at vt.edu>
Date: May 19, 2014 2:57 PM
Subject: Re: [PD] [expr] external crashing pd
To: "IOhannes m zmoelnig" <zmoelnig at iem.at>
Cc:

This had been fixed in pd-l2ork a while ago, it is alloc/dealloc error
where math is off by one and hence the crash. On top of that pd-l2ork
version warns user they have exceeded the number of allowable arguments and
fails to create the object this preventing potential problems that may come
as a result of improperly instantiated object receiving data. Please dig
through recent pd-l2ork commits to find the fix.

HTH
On May 19, 2014 1:11 PM, "IOhannes m zmoelnig" <zmoelnig at iem.at> wrote:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256
>
> On 2014-05-16 21:12, Kim Cascone wrote:
> >
> > two situations are crashing pd:
> >
> > - when I try to change an expression in the object, like multiply
> > a ratio by 2 or something it crashes pd
>
> unable to reproduce.
>
> >
> > - when I attempt to create 10 ratio divisions with outlets (try
> > adding one to the patch I've attached below) it crashes the app as
> > well
> >
> > is this a known bug?
>
> kind of.
> looking at the sources of expr i see (extra/expr~/vexp.h):
>
> <snip>
> /*
>  * Currently the maximum number of variables (inlets) that are supported
>  * is 10.
>  */
> #define MAX_VARS        9
> </snip>
>
> and later (showing that not only the "inlets" are limited, but also
> the number of outlets is hardcoded to MAX_VARS):
> <snap>
>   t_outlet *exp_outlet[MAX_VARS];
> </snap>
>
> so you cannot have more than 9 inlets.
> expr should not crash though, and instead print something to the
> pd-console, that tells you about that problem.
>
> so for now, my hint would be to not use [expr] and instead do explicit
> patching.
> in your case this is pretty straightforward (see attached patch...)
>
>
> fgamsdr
> IOhannes
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1
> Comment: Using GnuPG with Icedove - http://www.enigmail.net/
>
> iQIcBAEBCAAGBQJTebUxAAoJELZQGcR/ejb4hnsP/3dvJEqN4NxNgl3btxfLa3dj
> ooCiAqlJgUZjnA4n49Qr8E1IAXd+/9fjn5YcSOa99C6mH064JxkIXlQGX7OVYJZh
> k1xQGyv5zzXssmttVsxEdslIRJMEtkiPC7JL8zCOVPAxV8+GP02Vxy2lir5dNrGJ
> Q6zPk0adM7WVmsJdmMontAgRMglurtcvO+vgjblFukDLWO2ZbDRM1d6K/NnPg7cq
> lCu6/KbcEetOqAlCqFXlZwAvlDr102TewMQVW3WegqsssRsY5gLMxB9GiO7dMIMD
> 84PgUHLb6VOY+Ee1tEcGU2nRD5dLXJH48d3V7D0zP+V4T9bC6P5q9FC0h87KcFrI
> S0JCkLqUAjTN0jMvkiYW48P3s6UhfKWylaqRntUynSuUNW2cfwv26minOvX1d4T2
> eQhkbRQnymAppsGivwGhajeje8zG/RtLKo2DycSUjtChHdptWY0DMDbZFO8YKgT2
> /GwBXfBYbYKDIGELvBR+vjFDnkozWNaMZRziAxczuCcheq+lmBvcBsSxCWlMxtDF
> LjJvh0m3BezcE6HQK4+TG7DcCtpLm6gTcB9WElV3eledVoo7/FC9jPJIzJ/G/cru
> dNrwovc1uoU4GjLyW5roIcgch6HrrOFh2GoMSJyqL9IgNdQ6EA0Ug2UjIMXoFY0Z
> 7P2SQpFZQHUbPBHhZhtm
> =rNx0
> -----END PGP SIGNATURE-----
>
> _______________________________________________
> Pd-list at lists.iem.at mailing list
> UNSUBSCRIBE and account-management ->
> http://lists.puredata.info/listinfo/pd-list
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.puredata.info/pipermail/pd-list/attachments/20140519/bbfd0813/attachment.html>