--- jsr166/src/main/java/util/ArrayList.java	2018/05/18 03:48:34	1.61
+++ jsr166/src/main/java/util/ArrayList.java	2018/05/22 15:51:31	1.62
@@ -1737,6 +1737,7 @@ public class ArrayList<E> extends Abstra
     @Override
     public void replaceAll(UnaryOperator<E> operator) {
         replaceAllRange(operator, 0, size);
+        modCount++;
     }
 
     private void replaceAllRange(UnaryOperator<E> operator, int i, int end) {