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Karim Belabas on Mon, 21 Aug 2023 14:24:34 +0200
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Re: bug in simplify_shallow
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- To: "Ruud H.G. van Tol" <rvtol@isolution.nl>
- Subject: Re: bug in simplify_shallow
- From: Karim Belabas <Karim.Belabas@u-bordeaux.fr>
- Date: Mon, 21 Aug 2023 14:19:51 +0200
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* Ruud H.G. van Tol [2023-08-21 13:07]:
>
> ? b8(d)=for(i=1,#d,d[i]=fromdigits(digits(d[i],8))); strjoin(d,"9");
>
> ? b8([5])
> *** bug in simplify_shallow, type unknown, please report.
>
> -- Ruud
>
> Works OK:
> ? b8e(d)=for(i=1,#d,d[i]=fromdigits(digits(d[i],8))); eval(strjoin(d,"9"));
Thanks for your report !
A memory corruption in strjoin in a corner case (input has a single
argument, which is not a character string). We ended up returning freed
memory (more precisely pointer to stack data which is going to be
overwritten).
Fixed in master.
Cheers,
K.B.
--
Pr. Karim Belabas, U. Bordeaux, Vice-président en charge du Numérique
Institut de Mathématiques de Bordeaux UMR 5251 - (+33) 05 40 00 29 77
http://www.math.u-bordeaux.fr/~kbelabas/