--- jsr166/src/main/java/util/ArrayList.java	2017/10/22 17:44:03	1.54
+++ jsr166/src/main/java/util/ArrayList.java	2018/01/08 21:51:07	1.55
@@ -1556,7 +1556,6 @@ public class ArrayList<E> extends Abstra
                     setBit(deathRow, i - beg);
             if (modCount != expectedModCount)
                 throw new ConcurrentModificationException();
-            expectedModCount++;
             modCount++;
             int w = beg;
             for (i = beg; i < end; i++)