he
in
let x,xty,subst,metasenv,ugraph =
- type_of_aux subst metasenv context x ugraph
+ (*CSC: here unsharing is necessary to avoid an unwanted
+ relocalization. However, this also shows a great source of
+ inefficiency: "x" is refined twice (once now and once in the
+ subsequent eat_prods_and_args). Morevoer, how is divergence avoided?
+ *)
+ type_of_aux subst metasenv context (Unshare.unshare x) ugraph
in
let carr_src =
CoercDb.coerc_carr_of_term (CicMetaSubst.apply_subst subst xty)
| C.LetIn (name,so,dest) ->
let _,ty,metasenv,ugraph =
pack_coercions := false;
- type_of_aux' metasenv ctx so CicUniv.empty_ugraph in
+ type_of_aux' metasenv ctx so CicUniv.oblivion_ugraph in
pack_coercions := true;
let ctx' = Some (name,(C.Def (so,Some ty)))::ctx in
C.LetIn (name, merge_coercions ctx so, merge_coercions ctx' dest)
let b,_,_,_,_ = is_a_double_coercion t in
(* prerr_endline "CANDIDATO!!!!"; *)
if b then
- let ugraph = CicUniv.empty_ugraph in
+ let ugraph = CicUniv.oblivion_ugraph in
let old_insert_coercions = !insert_coercions in
insert_coercions := false;
let newt, _, menv, _ =