From: Wilmer Ricciotti <ricciott@cs.unibo.it>
Date: Tue, 12 Jan 2010 12:23:37 +0000 (+0000)
Subject: Fixed a bug in the discrimination principle: the refiner was not able to
X-Git-Tag: make_still_working~3126
X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=commitdiff_plain;ds=inline;h=829b998d08ec1bfcd68e82b42c369e1e35eb5bed;p=helm.git

Fixed a bug in the discrimination principle: the refiner was not able to
synthesize the return type of the inner match correctly.
---

diff --git a/helm/software/components/ng_tactics/nDestructTac.ml b/helm/software/components/ng_tactics/nDestructTac.ml
index 4f87707eb..8b2065a43 100644
--- a/helm/software/components/ng_tactics/nDestructTac.ml
+++ b/helm/software/components/ng_tactics/nDestructTac.ml
@@ -206,7 +206,8 @@ let mk_discriminator it status =
                Some (CicNotationPt.Binder (`Lambda, (mk_id "y",None), 
                  CicNotationPt.Binder (`Forall, (mk_id "_", Some
                  (mk_appl [mk_id "eq";CicNotationPt.Implicit
-                 `JustOne;CicNotationPt.Implicit `JustOne;mk_id "y"])),
+                 `JustOne;(*CicNotationPt.Implicit `JustOne*)
+                  mk_appl (mk_id (kname it i)::ts);mk_id "y"])),
                  CicNotationPt.Implicit `JustOne ))),
                   List.map
                   (fun j ->