RFR: 8317269: Store old classes in linked state in AOT cache [v4]

[Ioi Lam]

On Fri, 29 Aug 2025 18:57:23 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> Ioi Lam 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 five additional commits since the last revision:
>> 
>>  - Merge branch 'master' into 8317269-store-old-classes-in-linked-state-in-aot-cache
>>  - @coleenp comments
>>  - More bug fixes from JCK testing
>>  - Fixed bugs found in JCK testing
>>  - 8317269: Store old classes in linked state in AOT cache
>
> src/hotspot/share/cds/runTimeClassInfo.hpp line 204:
> 
>> 202:   u4* old_verifier_dependencies() {
>> 203:     assert(_num_old_verifier_dependencies > 0, "sanity");
>> 204:     return (u4*)(address(this) + old_verifier_dependencies_offset());
> 
> This seems like it should have a checked_cast<> around it rather than a plain cast.

`checked_cast<>` only checks size difference of the source and target types, but here both are pointer types so they have the same size.

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PR Review Comment: https://git.openjdk.org/jdk/pull/26754#discussion_r2312711414