test/jdk/java/util/concurrent/ConcurrentMap/ConcurrentModification.java

*** 87,96 ****
--- 87,111 ----
                      e.setValue(4);
                      check(m.get(1) == 4);
                  }
              }
          } catch (Throwable t) {unexpected(t);}
+ 
+         try {
+             if (m instanceof ConcurrentSkipListMap) {
+                 m.clear();
+                 check(m.isEmpty());
+                 m.put(1,2);
+                 check(m.size() == 1);
+                 ConcurrentSkipListMap mc = ((ConcurrentSkipListMap) m).clone();
+                 check(m.size() == 1);
+                 check(mc.size() == 1);
+                 m.put(2,3);
+                 check(m.size() == 2);
+                 check(mc.size() == 1);
+             }
+         } catch (Throwable t) {unexpected(t);}
      }
  
      public static void main(String[] args) {
          test(new ConcurrentHashMap<Integer,Integer>());
          test(new ConcurrentSkipListMap<Integer,Integer>());