Another crash with factorize

[gorzel]

>  ring rdp= (32003,a),y,dp;
> factorize(16y3+123y2+192y+128);
[1]:
   _[1]=16
   _[2]=y+13547
   _[3]=y+8445
   _[4]=y-7983
[2]:
   1,1,1,1
>  minpoly = 16a3+123a2+192a+128;
>  poly f = (-a-1)-2*y-2*y3+y4;
>  factorize(f);
zz_pX InvMod: can't compute multiplicative inverse
Singular : signal 6 (v: 3133/ 14465 ):
current line:>> factorize(f);<<
Segment fault/Bus error occurred at ffffe410 because of 0 (r:1323963929)
please inform the authors
trying to restart...

[mlee]

Sorry, I don't see your problem here, the minimal polynomial you defined is not irreducible, so factorize is supposed to crash. That Singular actually segfaults here is due to poor error handling by NTL.

[gorzel]

Well, the ticket was not correctly attributed and the title is misleading.

Nonetheless, I think, bugs like this will/should be fixed.