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-rw-r--r--pretyping/pretyping.ml7
-rw-r--r--pretyping/reductionops.ml4
-rw-r--r--pretyping/unification.ml4
3 files changed, 14 insertions, 1 deletions
diff --git a/pretyping/pretyping.ml b/pretyping/pretyping.ml
index a69caecabe..b2b583ba74 100644
--- a/pretyping/pretyping.ml
+++ b/pretyping/pretyping.ml
@@ -888,6 +888,9 @@ let rec pretype k0 resolve_tc (tycon : type_constraint) (env : ExtraEnv.t) evdre
| [], [] -> []
| _ -> assert false
in aux 1 1 (List.rev nal) cs.cs_args, true in
+ let fsign = if Flags.version_strictly_greater Flags.V8_6 || Flags.version_less_or_equal Flags.VOld
+ then Context.Rel.map (whd_betaiota !evdref) fsign
+ else fsign (* beta-iota-normalization regression in 8.5 and 8.6 *) in
let obj ind p v f =
if not record then
let nal = List.map (fun na -> ltac_interp_name lvar na) nal in
@@ -997,6 +1000,10 @@ let rec pretype k0 resolve_tc (tycon : type_constraint) (env : ExtraEnv.t) evdre
let pi = lift n pred in (* liftn n 2 pred ? *)
let pi = beta_applist !evdref (pi, [EConstr.of_constr (build_dependent_constructor cs)]) in
let cs_args = List.map (fun d -> map_rel_decl EConstr.of_constr d) cs.cs_args in
+ let cs_args =
+ if Flags.version_strictly_greater Flags.V8_6 || Flags.version_less_or_equal Flags.VOld
+ then Context.Rel.map (whd_betaiota !evdref) cs_args
+ else cs_args (* beta-iota-normalization regression in 8.5 and 8.6 *) in
let csgn =
List.map (set_name Anonymous) cs_args
in
diff --git a/pretyping/reductionops.ml b/pretyping/reductionops.ml
index a87debeff2..04374c88b4 100644
--- a/pretyping/reductionops.ml
+++ b/pretyping/reductionops.ml
@@ -1314,7 +1314,9 @@ let pb_equal = function
| Reduction.CONV -> Reduction.CONV
let report_anomaly e =
- let e = UserError (None, Pp.(str "Conversion test raised an anomaly" ++ print e)) in
+ let msg = Pp.(str "Conversion test raised an anomaly:" ++
+ spc () ++ CErrors.print e) in
+ let e = UserError (None,msg) in
let e = CErrors.push e in
iraise e
diff --git a/pretyping/unification.ml b/pretyping/unification.ml
index be9943f331..5eb6b780ad 100644
--- a/pretyping/unification.ml
+++ b/pretyping/unification.ml
@@ -194,6 +194,10 @@ let pose_all_metas_as_evars env evd t =
let {rebus=ty;freemetas=mvs} = Evd.meta_ftype evd mv in
let ty = EConstr.of_constr ty in
let ty = if Evd.Metaset.is_empty mvs then ty else aux ty in
+ let ty =
+ if Flags.version_strictly_greater Flags.V8_6 || Flags.version_less_or_equal Flags.VOld
+ then nf_betaiota evd ty (* How it was in Coq <= 8.4 (but done in logic.ml at this time) *)
+ else ty (* some beta-iota-normalization "regression" in 8.5 and 8.6 *) in
let src = Evd.evar_source_of_meta mv !evdref in
let ev = Evarutil.e_new_evar env evdref ~src ty in
evdref := meta_assign mv (EConstr.Unsafe.to_constr ev,(Conv,TypeNotProcessed)) !evdref;