RFR: 8347463: jdk/jfr/threading/TestManyVirtualThreads.java crashes with assert(oopDesc::is_oop_or_null(val)) [v2]

[Anton Seoane Ampudia]

On Mon, 27 Oct 2025 09:17:29 GMT, Roberto Castañeda Lozano <rcastanedalo at openjdk.org> wrote:

>> Anton Seoane Ampudia 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 seven additional commits since the last revision:
>> 
>>  - Merge branch 'openjdk:master' into JDK-8347463
>>  - Merge branch 'JDK-8347463' of github.com:anton-seoane/jdk into JDK-8347463
>>  - Merge branch 'openjdk:master' into JDK-8347463
>>  - Documentation for future similar cases
>>  - Test for JDK-8347463
>>  - Change to a more specific type
>>  - Runtime call had void type but actually returned an object
>
> Thanks for getting to the bottom of this, Antón! The changeset looks good to me, modulo a few documentation and test comments.
> It would be good if someone from the JFR team (@mgronlun or @egahlin?) could have a look at this change as well.

Thanks for your review @robcasloz! I have updated the changeset according to your comments

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PR Comment: https://git.openjdk.org/jdk/pull/27913#issuecomment-3450399965