X-Git-Url: http://git.megacz.com/?p=sbp.git;a=blobdiff_plain;f=src%2Fedu%2Fberkeley%2Fsbp%2FUnion.java;h=8780d9ea02df515179df4827dc41658897cc3681;hp=b000f95396e0d096d879f8f24c33931aff07347c;hb=6b53048f4413f3c618acc3581d0b4f60a236a9bc;hpb=84a4a8204373b996105e69edf91d2f9fae7b4bcb;ds=sidebyside

diff --git a/src/edu/berkeley/sbp/Union.java b/src/edu/berkeley/sbp/Union.java
index b000f95..8780d9e 100644
--- a/src/edu/berkeley/sbp/Union.java
+++ b/src/edu/berkeley/sbp/Union.java
@@ -21,8 +21,8 @@ public class Union extends Element implements Iterable<Sequence> {
         Topology ret = null;
         for(Sequence s : this) {
             Topology a = s.toAtom();
-            if (ret==null) ret = a.dup();
-            else           ret = ret.union(a.dup());
+            if (ret==null) ret = a;
+            else           ret = ret.union(a);
         }
         if (ret==null) throw new RuntimeException("confusion on " + this);
         return ret;