src/share/classes/java/util/TreeMap.java

rev 6093 : 7175464: entrySetView field is never updated in NavigableSubMap
Summary: The method entrySet() in AscendingSubMap and DescendingSubMap failed to cache the entrySetView.
Reviewed-by: duke

*** 1757,1767 ****
              }
          }
  
          public Set<Map.Entry<K,V>> entrySet() {
              EntrySetView es = entrySetView;
!             return (es != null) ? es : new AscendingEntrySetView();
          }
  
          TreeMap.Entry<K,V> subLowest()       { return absLowest(); }
          TreeMap.Entry<K,V> subHighest()      { return absHighest(); }
          TreeMap.Entry<K,V> subCeiling(K key) { return absCeiling(key); }
--- 1757,1767 ----
              }
          }
  
          public Set<Map.Entry<K,V>> entrySet() {
              EntrySetView es = entrySetView;
!             return (es != null) ? es : (entrySetView = new AscendingEntrySetView());
          }
  
          TreeMap.Entry<K,V> subLowest()       { return absLowest(); }
          TreeMap.Entry<K,V> subHighest()      { return absHighest(); }
          TreeMap.Entry<K,V> subCeiling(K key) { return absCeiling(key); }
*** 1838,1848 ****
              }
          }
  
          public Set<Map.Entry<K,V>> entrySet() {
              EntrySetView es = entrySetView;
!             return (es != null) ? es : new DescendingEntrySetView();
          }
  
          TreeMap.Entry<K,V> subLowest()       { return absHighest(); }
          TreeMap.Entry<K,V> subHighest()      { return absLowest(); }
          TreeMap.Entry<K,V> subCeiling(K key) { return absFloor(key); }
--- 1838,1848 ----
              }
          }
  
          public Set<Map.Entry<K,V>> entrySet() {
              EntrySetView es = entrySetView;
!             return (es != null) ? es : (entrySetView = new DescendingEntrySetView());
          }
  
          TreeMap.Entry<K,V> subLowest()       { return absHighest(); }
          TreeMap.Entry<K,V> subHighest()      { return absLowest(); }
          TreeMap.Entry<K,V> subCeiling(K key) { return absFloor(key); }