[jdk26] Integrated: 8373116: Genshen: arraycopy_work should be always done for arrays in old gen during young concurrent marking

[Xiaolong Peng]

On Wed, 10 Dec 2025 16:59:06 GMT, Xiaolong Peng <xpeng at openjdk.org> wrote:

> Hi all,
> 
> This pull request contains a clean backport of commit [c9ab330b](https://github.com/openjdk/jdk/commit/c9ab330b7bdd3cc2410ffdb336a63aa0ac7256a3) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.
> 
> The commit being backported was authored by Xiaolong Peng on 9 Dec 2025 and was reviewed by William Kemper and Kelvin Nilsen.
> 
> It is a necessary bug fix to address the crash caused by recently change to arraycopy barrier. 
> 
> Thanks!

This pull request has now been integrated.

Changeset: 15b5789f
Author:    Xiaolong Peng <xpeng at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/15b5789f554cb7b2467a6a0efb4e4cd129ee609b
Stats:     10 lines in 2 files changed: 5 ins; 0 del; 5 mod

8373116: Genshen: arraycopy_work should be always done for arrays in old gen during young concurrent marking
8372498: [genshen] gc/TestAllocHumongousFragment.java#generational causes intermittent SIGSEGV crashes

Reviewed-by: shade, wkemper
Backport-of: c9ab330b7bdd3cc2410ffdb336a63aa0ac7256a3

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PR: https://git.openjdk.org/jdk/pull/28751