Karim BELABAS on Mon, 1 Jul 2002 22:58:11 +0200 (MEST)


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Re: misc SEGV's


On Mon, 1 Jul 2002, Igor Schein wrote:
> ? galoissubcyclo(vector(3,x,0));          \\ SEGV
>   ***   bug in GP (Segmentation Fault), please report
> ? galoissubfields(vector(8,x,0));         \\ SEGV
>   ***   bug in GP (Segmentation Fault), please report
> ? quadhilbert(vector(10,x,0));            \\ SEGV
>   ***   bug in GP (Segmentation Fault), please report
>
> This one is more interesting,  as seemingly identical input
> results in different behavior:
>
> ? vector(13,x,0)
> %1 = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
> ? elltors(vector(13,x,0))
>   ***   precision too low in torselldoud.
> ? elltors(%1)
>   ***   bug in GP (Segmentation Fault), please report
> ? elltors(vector(13,x,0))
>   ***   precision too low in torselldoud.
> ? elltors(%1)
>   ***   bug in GP (Segmentation Fault), please report

We need new types to prevent forgeries as above. I'm not fixing any of these.
For the time being, let the user shoot h(er|im)self in the foot if (s)he so
wishes.

    Karim.
-- 
Karim Belabas                    Tel: (+33) (0)1 69 15 57 48
Dép. de Mathematiques, Bat. 425  Fax: (+33) (0)1 69 15 60 19
Université Paris-Sud             Email: Karim.Belabas@math.u-psud.fr
F-91405 Orsay (France)           http://www.math.u-psud.fr/~belabas/
--
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