RFR: 8179918: EnumSet spliterator should report SORTED, ORDERED, NONNULL [v2]

[Viktor Klang]

On Sun, 30 Nov 2025 00:30:05 GMT, Patrick Strawderman <duke at openjdk.org> wrote:

>> I noticed that the Spliterator for EnumSet does not report SORTED, ORDERED, or NONNULL characteristics, all of which are inherent to API of EnumSet. I found there's an existing ticket for this as well.
>> 
>> The ticket also mentions optimized `forEach`, etc, which I presume means avoiding the default implementation that uses the iterator and just iterating over the bitset directly; I can add that here or perhaps in a follow up if it's still deemed worthwhile.
>
> Patrick Strawderman has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Update copyright year

Hi @kilink,

This PR is currently missing a test case or two.

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PR Comment: https://git.openjdk.org/jdk/pull/28568#issuecomment-3595404156