RFR: 8375654: Exclude all array classes from dynamic CDS archive

[Ioi Lam]

On Thu, 22 Jan 2026 17:41:17 GMT, Vladimir Kozlov <kvn at openjdk.org> wrote:

>> In `A` is a subtype of `B`,  it's possible for an `ObjArrayKlass` for `A[]` to be archived in the dynamic CDS archive and its `_secondary_supers` contains a pointer to an `ObjArrayKlass` for `B[]` that's also archived in the dynamic archive. 
>> 
>> This scenario used to be supported, but since [JDK-8374639](https://bugs.openjdk.org/browse/JDK-8374639), if `B` is archived in the static CDS archive, at runtime a different `B[]` is created dynamically. As a result, we can no longer typecast an instance of `A[]` into an instance of `B[]`.
>> 
>> Since `ObjArrayKlasses` are cheap to allocate at runtime, the easiest fix is to simply not store any  `ObjArrayKlass` in the dynamic CDS archive.
>> 
>> (I also added missing copyright header to a problem list file used by CDS/AOT testing).
>
> Good.

Thanks @vnkozlov and @iwanowww for the review

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PR Comment: https://git.openjdk.org/jdk/pull/29356#issuecomment-3788518839