RFR: 8312262: Klass::array_klass() should return ArrayKlass pointer

[Coleen Phillimore]

On Thu, 27 Jul 2023 20:57:56 GMT, Calvin Cheung <ccheung at openjdk.org> wrote:

>> src/hotspot/share/oops/arrayKlass.hpp line 62:
>> 
>>> 60:   ObjArrayKlass* higher_dimension() const     { return _higher_dimension; }
>>> 61:   inline ObjArrayKlass* higher_dimension_acquire() const; // load with acquire semantics
>>> 62:   void set_higher_dimension(ObjArrayKlass* k) { _higher_dimension = k; }
>> 
>> The set_higher_dimension() function seems to be unused.  Should we remove it?
>
> I'm using the function in the following PR https://github.com/openjdk/jdk/pull/14959.

Should you be using release_set_higher_dimension in your change @calvinccheung  ?  It does seem better to not have unsafe alternatives.

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PR Review Comment: https://git.openjdk.org/jdk/pull/15059#discussion_r1276850667