[lworld] RFR: 8373202: [lworld] ObjectReference.equals should follow == semantics for value objects

[Serguei Spitsyn]

On Thu, 18 Dec 2025 20:00:45 GMT, Alex Menkov <amenkov at openjdk.org> wrote:

> Updated implementation of ObjectReference.equals and ObjectReference.hashCode to comply the spec for value objects.
> Added the test for value object ctor debugging, the test verifies the behaviour is expected.
> There is an issue with instance filter, it till be fixed separately (it's not yet clear how it would be better to fix it)
> 
> testing: tier1..4, hs-tier5-svc

src/java.se/share/data/jdwp/jdwp.spec line 1830:

> 1828:             (Error VM_DEAD)
> 1829:         )
> 1830:     )

I wonder if the `(Error NOT_IMPLEMENTED)` should also be included. Should we also consider to introduce a command in the `CapabilitiesNew=17` command set?

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PR Review Comment: https://git.openjdk.org/valhalla/pull/1834#discussion_r2684114207