do not create attributed variables for ground tuples

2023-04-11 21:24:34 +02:00
parent be45672e22
commit f08f539768
1 changed files with 5 additions and 3 deletions
--- a/src/lib/clpz.pl
+++ b/src/lib/clpz.pl
@@ -4369,9 +4369,11 @@ tuple_domain([T|Ts], Relation0) -->
        tuple_domain(Ts, Relation1).

 tuple_freeze(Tuple, Relation) :-
-        put_attr(R, clpz_relation, Relation),
-        make_propagator(rel_tuple(R, Tuple), Prop),
-        tuple_freeze_(Tuple, Prop).
+        (   ground(Tuple) -> true
+        ;   put_attr(R, clpz_relation, Relation),
+            make_propagator(rel_tuple(R, Tuple), Prop),
+            tuple_freeze_(Tuple, Prop)
+        ).

 tuple_freeze_([], _).
 tuple_freeze_([T|Ts], Prop) :-