[CakeML-Dev] reusing a CF specification

[Michael.Norrish at data61.csiro.au]

I’ve got as far as something like

  0.  NUM n nv
  1.  n + 1 < LENGTH a
------------------------------------
cf_app p (Var (Long "Word8" "fromInt")) [Lit (IntLit 0)] (…)
  (W8ARRAY av a) (POSTv zv. &WORD 0w zv)


where Word8.fromInt has been declared and characterized by code identical to that in basisProgTheory, but I don’t know how to use the proved specification: xapp throws an exception.

What am I doing wrong? 

Many thanks,
Michael.