RFR: 8301721: lookup.findSpecial fails on Object method call from interface

[Alan Bateman]

On Mon, 5 Jun 2023 19:33:48 GMT, Mandy Chung <mchung at openjdk.org> wrote:

> Lookup.findSpecial fails on Object method call from an interface because of a bug in the implementation calling `Class::getSuperclass` on an interface which has no superclass.   The implementation should only search the method from its superclass only if it's a class.   This patch is trivial and skip the superclass search if it's an interface.

This looks right, there's no superclass to search.

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Marked as reviewed by alanb (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/14319#pullrequestreview-1465328491