[lworld] Integrated: 8371604: [lworld] SIGSEGV in InlineKlass::is_payload_marked_as_null

[Paul Hübner]

On Thu, 20 Nov 2025 12:24:10 GMT, Paul Hübner <phubner at openjdk.org> wrote:

> Hi all,
> 
> This patch fixes several `int` overflows relating to flat array element loads/stores. 
> I've included some gtests that address a subset of these changes.  We should test flat arrays larger than 16GB in size, which is not something we can feasibly do in our tier1 jtreg tests. I've filed [JDK-8372261](https://bugs.openjdk.org/browse/JDK-8372261) as a follow-up RFE to investigate this.
> 
> Testing: tiers 1-4, [`LocalityCheck.java`](https://bugs.openjdk.org/secure/attachment/117136/LocalityCheck.java) run locally 100 times.

This pull request has now been integrated.

Changeset: 7ff93b6f
Author:    Paul Hübner <phubner at openjdk.org>
Committer: David Simms <dsimms at openjdk.org>
URL:       https://git.openjdk.org/valhalla/commit/7ff93b6fe64ed651face62c4ec4f7260eeae4819
Stats:     180 lines in 9 files changed: 167 ins; 0 del; 13 mod

8371604: [lworld] SIGSEGV in InlineKlass::is_payload_marked_as_null

Co-authored-by: Frederic Parain <fparain at openjdk.org>
Reviewed-by: coleenp, thartmann

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PR: https://git.openjdk.org/valhalla/pull/1752