[jdk21u] Integrated: 8315082: [REDO] Generational ZGC: Tests crash with assert(index == 0 || is_power_of_2(index))

[Aleksey Shipilev]

On Thu, 9 Nov 2023 11:19:57 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

> Clean backport to improve GC reliability.
> 
> Additional testing:
>  - [x] New regression tests pass with the fix, but also pass _without the fix too_
>  - [x] Original reproducer from the issue fails before the fix, passes with it
>  - [x] Linux x86_64 fastdebug, `tier1 tier2 tier3 tier4`

This pull request has now been integrated.

Changeset: f01df290
Author:    Aleksey Shipilev <shade at openjdk.org>
URL:       https://git.openjdk.org/jdk21u/commit/f01df290a96510d400a48c063926ff61c10a567a
Stats:     188 lines in 6 files changed: 157 ins; 10 del; 21 mod

8315082: [REDO] Generational ZGC: Tests crash with assert(index == 0 || is_power_of_2(index))

Backport-of: ceff47b462ccbaff5cc16111dc65463a6d8d3d8d

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PR: https://git.openjdk.org/jdk21u/pull/344