hg: jdk/sandbox: 8234423: Modifying ArrayList.subList().subList() resets modCount of subList

[chris.hegarty at oracle.com]

Changeset: 457b4c4e8c9a
Author:    igerasim
Date:      2020-01-09 15:38 -0800
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/457b4c4e8c9a

8234423: Modifying ArrayList.subList().subList() resets modCount of subList
Reviewed-by: rriggs

! src/java.base/share/classes/java/util/ArrayList.java
+ test/jdk/java/util/ArrayList/SubListModCount.java