diff options
Diffstat (limited to 'plugins/firstorder/unify.ml')
| -rw-r--r-- | plugins/firstorder/unify.ml | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/plugins/firstorder/unify.ml b/plugins/firstorder/unify.ml index 4e0ad108..299a0054 100644 --- a/plugins/firstorder/unify.ml +++ b/plugins/firstorder/unify.ml @@ -1,13 +1,11 @@ (************************************************************************) (* v * The Coq Proof Assistant / The Coq Development Team *) -(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2011 *) +(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2010 *) (* \VV/ **************************************************************) (* // * This file is distributed under the terms of the *) (* * GNU Lesser General Public License Version 2.1 *) (************************************************************************) -(*i $Id: unify.ml 14641 2011-11-06 11:59:10Z herbelin $ i*) - open Util open Formula open Tacmach @@ -91,9 +89,8 @@ let unif t1 t2= let value i t= let add x y= if x<0 then y else if y<0 then x else x+y in - let tref=mkMeta i in let rec vaux term= - if term=tref then 0 else + if isMeta term && destMeta term = i then 0 else let f v t=add v (vaux t) in let vr=fold_constr f (-1) term in if vr<0 then -1 else vr+1 in |