RFR: 8338981: Access to private classes should be permitted inside the permits clause of the enclosing top-level class [v14]

[Evemose]

On Thu, 10 Oct 2024 15:05:11 GMT, Vicente Romero <vromero at openjdk.org> wrote:

> > I am sorry for not fully realizing this sooner, I forgot about it. But, the JLS older than 19 didn't have this provision for the nested private classes, I believe. Do we need to limit this to only `-source 19+`?
> 
> good catch, yes I agree. @Evemose I think that we will need to add a new feature, to `com.sun.tools.javac.code.Source.Feature`. This PR is a recent-ish example: `https://github.com/openjdk/jdk/pull/12893`

I have added feature, but would apreciate any advice on how to improve error reporting. You could see currecnt behaviour in added test, but I feel like it could be improved, specifically position reporting and erroneous symbol reporting, but I am not really sure how its done properly

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PR Comment: https://git.openjdk.org/jdk/pull/20718#issuecomment-2408581446