src/java.base/share/classes/java/util/concurrent/RecursiveTask.java

*** 67,76 ****
--- 67,81 ----
   */
  public abstract class RecursiveTask<V> extends ForkJoinTask<V> {
      private static final long serialVersionUID = 5232453952276485270L;
  
      /**
+      * Constructor for subclasses to call.
+      */
+     public RecursiveTask() {}
+ 
+     /**
       * The result of the computation.
       */
      @SuppressWarnings("serial") // Conditionally serializable
      V result;