RFR: 8280377: MethodHandleProxies does not correctly invoke default methods with varags

[Alan Bateman]

On Fri, 21 Jan 2022 22:49:38 GMT, Mandy Chung <mchung at openjdk.org> wrote:

> The MethodHandle of a default method should be made as a fixed arity method handle because it is invoked via Proxy's invocation handle with a non-vararg array of arguments.  On the other hand, the `InvocationHandle::invokeDefault` method  was added in Java 16 to invoke a default method of a proxy instance.  This patch simply converts the implementation to call `InvocationHandle::invokeDefault` instead.

Marked as reviewed by alanb (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/7185