From: Claudio Sacerdoti Coen <claudio.sacerdoticoen@unibo.it>
Date: Sun, 18 May 2008 07:52:55 +0000 (+0000)
Subject: Serious bug fixed: the max of two universes was computed using the polymorphic
X-Git-Tag: make_still_working~5173
X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=commitdiff_plain;h=15bc0d34ae5f72cb31ec383e1ac48ad53f06a725;p=helm.git

Serious bug fixed: the max of two universes was computed using the polymorphic
max function of OCaml instead of append!!!
---

diff --git a/helm/software/components/ng_kernel/nCicTypeChecker.ml b/helm/software/components/ng_kernel/nCicTypeChecker.ml
index 65e87e55d..bccf753f2 100644
--- a/helm/software/components/ng_kernel/nCicTypeChecker.ml
+++ b/helm/software/components/ng_kernel/nCicTypeChecker.ml
@@ -124,7 +124,7 @@ let sort_of_prod ~metasenv ~subst context (name,s) (t1, t2) =
    let t2 = R.whd ~subst ((name,C.Decl s)::context) t2 in
    match t1, t2 with
    | C.Sort s1, C.Sort C.Prop -> t2
-   | C.Sort (C.Type u1), C.Sort (C.Type u2) -> C.Sort (C.Type (max u1 u2)) 
+   | C.Sort (C.Type u1), C.Sort (C.Type u2) -> C.Sort (C.Type (u1@u2)) 
    | C.Sort _,C.Sort (C.Type _) -> t2
    | C.Sort (C.Type _) , C.Sort C.CProp -> t1
    | C.Sort _, C.Sort C.CProp