Review Request: JDK-8209005: Lookup.unreflectSpecial fails for default methods when Lookup.findSpecial works
daniel.fuchs at oracle.com
Wed Jul 31 09:57:40 UTC 2019
Hi Peter, Mandy,
On 31/07/2019 08:59, Peter Levart wrote:
> I think Daniel is talking about the "dispatch" semantics of
> unreflectSpecial here, right Daniel?
> The findSpecial / unreflectSpecial is a MethodHandle equivalent for
> bytecode instruction invokespecial (sans actual invoking). invokespecial
> is typically used for implementing the super.method(args) Java
> invocations. In that case, the superclass method is targeted - this is
> not a virtual method dispatch like aMethod.invoke(this, arg*) - i.e. the
> reflective invocation is always a virtual invocation (for non-private
> methods). Likewise findSpecial and unreflectSpecial produce a
> MethodHandle that dispatches to the method in the superclass (the
> aMethod.getDeclatingClass() in case of unreflectSpecial) regardless of
> whether that method is overridden in the subclass or not.
Thanks Peter, that's exactly what I wanted to say. Apologies for not
being clear enough.
> Regards, Peter
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