rnfisnorm

[Martin Bright <M.Bright@dpmms.cam.ac.uk>]

I'm encountering strange behaviour with rnfisnorm in GP/PARI 2.2.3.  The
example in the manual works fine, but if I change it a bit:

? bnf = bnfinit(y^2-35);
? p = x^2-42;
? rnf = rnfequation(bnf,p,1);
? ext = [p, rnf[2], bnfinit(rnf[1])];
? rnfisnorm(bnf,ext,10,0)
  ***   inconsistent data in inverseimage.
? rnfisnorm(bnf,ext,17,0)
  ***   bug in GP (Segmentation Fault), please report

Am I doing something stupid, or should it work?

Many thanks
Martin Bright

-- 
Martin Bright, Clare College, Cambridge
M.Bright@dpmms.cam.ac.uk