Package: pari
Version: 2.6.2-15626

? nfinit([y^3+3,nfbasis(x^2+2)]);
  ***   at top-level: nfinit([y^3+3,nfbasi
  ***                 ^--------------------
  ***   at top-level: nfinit([y^3+3,nfbasi
  ***                 ^--------------------
  *** nfinit: unknown type 0.

Consistency check would be inexpensive here, wouldn't it?

Thanks

Igor