src/share/classes/com/sun/source/util/TreeScanner.java

*** 353,363 ****
          R r = scan(node.getType(), p);
          r = scanAndReduce(node.getTypeArguments(), p, r);
          return r;
      }
  
!     public R visitDisjunctiveType(DisjunctiveTypeTree node, P p) {
          return scan(node.getTypeAlternatives(), p);
      }
  
      public R visitTypeParameter(TypeParameterTree node, P p) {
          R r = scan(node.getBounds(), p);
--- 353,363 ----
          R r = scan(node.getType(), p);
          r = scanAndReduce(node.getTypeArguments(), p, r);
          return r;
      }
  
!     public R visitUnionType(UnionTypeTree node, P p) {
          return scan(node.getTypeAlternatives(), p);
      }
  
      public R visitTypeParameter(TypeParameterTree node, P p) {
          R r = scan(node.getBounds(), p);