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-rw-r--r--toplevel/command.ml15
1 files changed, 9 insertions, 6 deletions
diff --git a/toplevel/command.ml b/toplevel/command.ml
index 6866bc69e..f4171da1b 100644
--- a/toplevel/command.ml
+++ b/toplevel/command.ml
@@ -341,12 +341,15 @@ let interp_cstrs evdref env impls mldata arity ind =
let sign_level env evd sign =
fst (List.fold_right
- (fun (_,_,t as d) (lev,env) ->
- let s = destSort (Reduction.whd_betadeltaiota env
- (nf_evar evd (Retyping.get_type_of env evd t)))
- in
- let u = univ_of_sort s in
- (Univ.sup u lev, push_rel d env))
+ (fun (_,b,t as d) (lev,env) ->
+ match b with
+ | Some _ -> (lev, push_rel d env)
+ | None ->
+ let s = destSort (Reduction.whd_betadeltaiota env
+ (nf_evar evd (Retyping.get_type_of env evd t)))
+ in
+ let u = univ_of_sort s in
+ (Univ.sup u lev, push_rel d env))
sign (Univ.type0m_univ,env))
let sup_list = List.fold_left Univ.sup Univ.type0m_univ