From 36ffad7c7847e28c3275897547a7308929748455 Mon Sep 17 00:00:00 2001 From: Claudio Sacerdoti Coen Date: Wed, 17 Dec 2003 11:49:58 +0000 Subject: [PATCH] Big bug spotted and commented: the delift function considers the explicit substitution over metavariable occurrences as telescopic. Instead it is simultaneous. --- helm/ocaml/cic_unification/cicUnification.ml | 3 +++ 1 file changed, 3 insertions(+) diff --git a/helm/ocaml/cic_unification/cicUnification.ml b/helm/ocaml/cic_unification/cicUnification.ml index 7221dd0a8..bc736b260 100644 --- a/helm/ocaml/cic_unification/cicUnification.ml +++ b/helm/ocaml/cic_unification/cicUnification.ml @@ -91,6 +91,9 @@ let delift context metasenv l t = in C.Var (uri,exp_named_subst') | C.Meta (i, l1) as t -> +(* CSC: BIG BUG HERE! In the explicit substitution l1 = [t1 ; t2], *) +(* CSC: it is NOT true that Rel(1) in t2 refers to t1 (i.e. the explicit *) +(* CSC: substitution is simultaneous, not telescopic. To be fixes ASAP. *) let rec deliftl j = function [] -> [] -- 2.39.2