diff options
Diffstat (limited to 'pretyping/inductiveops.ml')
| -rw-r--r-- | pretyping/inductiveops.ml | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/pretyping/inductiveops.ml b/pretyping/inductiveops.ml index 7f6a4a6442..dfdc24d480 100644 --- a/pretyping/inductiveops.ml +++ b/pretyping/inductiveops.ml @@ -365,14 +365,16 @@ let get_arity env ((ind,u),params) = let (mib,mip) = Inductive.lookup_mind_specif env ind in let parsign = (* Dynamically detect if called with an instance of recursively - uniform parameter only or also of non recursively uniform + uniform parameter only or also of recursively non-uniform parameters *) - let parsign = mib.mind_params_ctxt in - let nnonrecparams = mib.mind_nparams - mib.mind_nparams_rec in - if Int.equal (List.length params) (rel_context_nhyps parsign - nnonrecparams) then - snd (List.chop nnonrecparams mib.mind_params_ctxt) - else - parsign in + let nparams = List.length params in + if Int.equal nparams mib.mind_nparams then + mib.mind_params_ctxt + else begin + assert (Int.equal nparams mib.mind_nparams_rec); + let nnonrecparamdecls = List.length mib.mind_params_ctxt - mib.mind_nparams_rec in + snd (List.chop nnonrecparamdecls mib.mind_params_ctxt) + end in let parsign = Vars.subst_instance_context u parsign in let arproperlength = List.length mip.mind_arity_ctxt - List.length parsign in let arsign,_ = List.chop arproperlength mip.mind_arity_ctxt in |