RFR 8234423 : Modifying ArrayList.subList().subList() resets modCount of subList
Ivan Gerasimov
ivan.gerasimov at oracle.com
Tue Dec 17 02:01:51 UTC 2019
Gentle ping.
Will someone please volunteer to review this fix of a regression?
Thanks in advance!
> On 11/20/19 10:11 PM, Ivan Gerasimov wrote:
>> Hello!
>>
>> When a sublist of a sublist of an ArrayList is created, its modCount
>> is initialized from the ArrayList root, and not from its immediate
>> parent.
>>
>> This means that modifying that 2nd level sublist will reset modCounts
>> of the entire chain up to the root, and consequently the 1st level
>> sublist won't detect concurrent modification done to the ArrayList root.
>>
>> Along with the fix, handling of modCount is slightly improved in a
>> few other places.
>>
>> Would you please help review the fix?
>>
>> BUGURL: https://bugs.openjdk.java.net/browse/JDK-8234423
>> WEBREV: http://cr.openjdk.java.net/~igerasim/8234423/00/webrev/
>>
--
With kind regards,
Ivan Gerasimov
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