src/jdk.compiler/share/classes/com/sun/source/util/TreePathScanner.java

*** 41,50 ****
--- 41,54 ----
   *
   * @author Jonathan Gibbons
   * @since 1.6
   */
  public class TreePathScanner<R, P> extends TreeScanner<R, P> {
+     /**
+      * Constructor for subclasses to call.
+      */
+     public TreePathScanner() {}
  
      /**
       * Scans a tree from a position identified by a TreePath.
       * @param path the path identifying the node to be scanned
       * @param p a parameter value passed to visit methods