Valhalla added new data structures to describes classes, which includes [Inline|Instance]Klass to InlineKlass pointers in the _inline_type_field_klasses array.
When a class is loaded from a CDS archives, the JVM must check that those pointers are still pointing to the right class. Tests are needed to ensure that the code in SystemDictionary::load_shared_class() correctly detects and handles cases where an application has substituted a class in the archive with another one.