RFR: 8340401: DcmdMBeanPermissionsTest.java and SystemDumpMapTest.java fail with assert(_stack_base != nullptr) failed: Sanity check [v9]

[Thomas Stuefe]

On Fri, 13 Dec 2024 16:35:54 GMT, Simon Tooke <stooke at openjdk.org> wrote:

>> This PR addresses JDK-8340401 by adding a test for a thread with no stack currently assigned.
>
> Simon Tooke has updated the pull request incrementally with one additional commit since the last revision:
> 
>   implement and use new Thread::stack_base_or_null() method

Good.

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

Marked as reviewed by stuefe (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/21091#pullrequestreview-2503597428