RFR: 8257037: No javac warning when calling deprecated constructor with diamond [v2]

[Maurizio Cimadamore]

On Mon, 7 Dec 2020 11:54:08 GMT, Guoxiong Li <github.com+13688759+lgxbslgx at openjdk.org> wrote:

>> The extensive testing revealed at least 10 cases where the compiler is issuing a new, resolution-related error when it wasn't doing so before - (the errors seem to have to do with `abstract` methods). As a result I think it's best to go with your first conservative approach, to avoid troubles. I'll try to investigate further and come up with a reduced test case for the failing condition - but that doesn't have to hold up this fix. Thanks!
>
> It is a good news that the trouble is found before the integration instead of after the release of JDK16.
> I revise the code to previous version.
> Thank your for the review.

Actually, after some more analysis, I discovered that many of the errors were unrelated with your fix - and had to do instead with the addition of a new default method on Stream, which is causing overload resolution changes in code that has static imports on Collectors.

Only one issue remains to be fully triaged - but, being annotation related, I think it's unlikely caused by your patch. In other words, I believe both patches are likely to be safe. I'm obviously ok with you going ahead with the more conservative fix, since you already reverted the code to that version.

I apologize for the back and forth!

-------------

PR: https://git.openjdk.java.net/jdk/pull/1490