diff options
Diffstat (limited to 'pretyping/pretyping.ml')
| -rw-r--r-- | pretyping/pretyping.ml | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/pretyping/pretyping.ml b/pretyping/pretyping.ml index 5438d982..7b4b5e07 100644 --- a/pretyping/pretyping.ml +++ b/pretyping/pretyping.ml @@ -6,7 +6,7 @@ (* * GNU Lesser General Public License Version 2.1 *) (************************************************************************) -(* $Id$ *) +(* $Id: pretyping.ml 13332 2010-07-26 22:12:43Z msozeau $ *) open Pp open Util @@ -684,11 +684,14 @@ module Pretyping_F (Coercion : Coercion.S) = struct (pretype tycon env evdref lvar c).uj_val | IsType -> (pretype_type empty_valcon env evdref lvar c).utj_val in - evdref := fst (consider_remaining_unif_problems env !evdref); - if resolve_classes then - evdref := - Typeclasses.resolve_typeclasses ~onlyargs:false - ~split:true ~fail:fail_evar env !evdref; + if resolve_classes then ( + evdref := Typeclasses.resolve_typeclasses ~onlyargs:false + ~split:true ~fail:fail_evar env !evdref); + evdref := (try consider_remaining_unif_problems env !evdref + with e when not resolve_classes -> + consider_remaining_unif_problems env + (Typeclasses.resolve_typeclasses ~onlyargs:false + ~split:true ~fail:fail_evar env !evdref)); let c = if expand_evar then nf_evar !evdref c' else c' in if fail_evar then check_evars env Evd.empty !evdref c; c @@ -701,7 +704,7 @@ module Pretyping_F (Coercion : Coercion.S) = struct let understand_judgment sigma env c = let evdref = ref (create_evar_defs sigma) in let j = pretype empty_tycon env evdref ([],[]) c in - let evd,_ = consider_remaining_unif_problems env !evdref in + let evd = consider_remaining_unif_problems env !evdref in let evd = Typeclasses.resolve_typeclasses ~onlyargs:true ~split:false ~fail:true env evd in |