RFR: 8319463: ClassSignature should have superclass and superinterfaces as ClassTypeSig [v3]

[Chen Liang]

On Fri, 5 Jan 2024 22:58:36 GMT, Chen Liang <liach at openjdk.org> wrote:

>> Discovered while writing a test for #16513 that `ClassSignature.superclassSignature()` does not return a `ClassTypeSig`, yet [JVM Spec](https://docs.oracle.com/javase/specs/jvms/se21/html/jvms-4.html#jvms-4.7.9.1-4100) requires it to be one. This patch adds such a requirement to the accessors, factories, and the parsing logic.
>
> Chen Liang has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains six commits:
> 
>  - Fix a few other invalid signatures
>  - Merge branch 'master' of https://github.com/openjdk/jdk into feature/class-signature-elements
>  - Add extra test cases for new bad class signatures
>  - Merge branch 'master' into feature/class-signature-elements
>  - Merge branch 'master' into feature/class-signature-elements
>  - 8319463: ClassSignature should have superclass and superinterfaces as ClassTypeSig

@asotona Could you review this patch, which fixes some of our API's violation of the JVMS, as shown in the tests?

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PR Comment: https://git.openjdk.org/jdk/pull/16514#issuecomment-1879361294