src/HOL/Statespace/DistinctTreeProver.thy
changeset 32740 9dd0a2f83429
parent 32010 cb1a1c94b4cd
child 32960 69916a850301
     1.1 --- a/src/HOL/Statespace/DistinctTreeProver.thy	Tue Sep 29 14:59:24 2009 +0200
     1.2 +++ b/src/HOL/Statespace/DistinctTreeProver.thy	Tue Sep 29 16:24:36 2009 +0200
     1.3 @@ -664,7 +664,7 @@
     1.4       HOLogic.Trueprop$
     1.5         (Const ("DistinctTreeProver.all_distinct",DistinctTreeProver.treeT (Type ("nat",[])) --> HOLogic.boolT)$t')
     1.6  
     1.7 -val da = ref refl;
     1.8 +val da = Unsynchronized.ref refl;
     1.9  
    1.10  *}
    1.11