X-Git-Url: http://git.megacz.com/?p=sbp.git;a=blobdiff_plain;f=src%2Fedu%2Fberkeley%2Fsbp%2FForest.java;h=1b92a764458515ed750fb3fbe2d604f61944c717;hp=3790562841d2e26f3e95b2930dda75b64e1c9e44;hb=628b3a8eaafdbe8507e841076051bff42aadf5ee;hpb=e5cfb136bf7fd1352eff1bd87a458aa4ff748537

diff --git a/src/edu/berkeley/sbp/Forest.java b/src/edu/berkeley/sbp/Forest.java
index 3790562..1b92a76 100644
--- a/src/edu/berkeley/sbp/Forest.java
+++ b/src/edu/berkeley/sbp/Forest.java
@@ -159,6 +159,7 @@ public abstract class Forest<T> /*extends PrintableTree<Forest.MyBody<T>>*/
      *  viewed, it becomes immutable
      */
     static class Ref<T> extends Forest<T> {
+        public HashSet<GSS.Phase.Node> parents = new HashSet<GSS.Phase.Node>();
         public boolean ambiguous() {
             if (hp.size()==0) return false;
             if (hp.size()==1) return hp.iterator().next().ambiguous();