> SonarCloud complains that since 
> [JDK-8356080](https://bugs.openjdk.org/browse/JDK-8356080) we are using 
> `Boolean` boxes in `ReverseOrderListView`. This change `boolean` -> `Boolean` 
> was made in [JDK-8356080](https://bugs.openjdk.org/browse/JDK-8356080) to 
> allow `@Stable` folding of boolean field. But it is very awkward to trade in 
> the existence of the boxed object to allow optional constant folding.
> 
> We can flatten this field to `byte` and check the specific non-zero values. 
> The field is final, so it is never actually in `0` state.
> 
> Additional testing:
>  - [x] Linux x86_64 server fastdebug, `java/util`

Aleksey Shipilev has updated the pull request with a new target base due to a 
merge or a rebase. The incremental webrev excludes the unrelated changes 
brought in by the merge/rebase. The pull request contains five additional 
commits since the last revision:

 - Just drop back to boolean
 - Merge branch 'master' into JDK-8357798-reverse-order-list-boxes
 - A bit better comment
 - Better fix
 - Fix

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/25456/files
  - new: https://git.openjdk.org/jdk/pull/25456/files/288b13ee..842b8dea

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=25456&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=25456&range=00-01

  Stats: 56428 lines in 840 files changed: 30803 ins; 15851 del; 9774 mod
  Patch: https://git.openjdk.org/jdk/pull/25456.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25456/head:pull/25456

PR: https://git.openjdk.org/jdk/pull/25456

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