Integrated: 8350029: Illegal invokespecial interface not caught by verification

[David Holmes]

On Fri, 30 May 2025 06:31:43 GMT, David Holmes <dholmes at openjdk.org> wrote:

> As described in the JBS problem statement there was a missing verification check for bad `invokespecial` call, though it did result in a runtime exception. That gap has now been closed by checking if the target of the invocation is an interface type, which we can check when the type gets loaded as part of the assignability check.
> 
> The existing code was very difficult to follow so I have added significant commentary in the verifier. I also improved the naming in the assignability checking code to make it easier to follow. Finally, the existing linkage error was using an incorrect error message to describe the problem it was encountering.
> 
> Testing:
>  - new test case
>  - tiers 1-3
> 
> Thanks

This pull request has now been integrated.

Changeset: 8f8b367a
Author:    David Holmes <dholmes at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/8f8b367ae3c9afca3581f6aced7f9855ef0d541d
Stats:     263 lines in 8 files changed: 209 ins; 1 del; 53 mod

8350029: Illegal invokespecial interface not caught by verification

Reviewed-by: coleenp, matsaave

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PR: https://git.openjdk.org/jdk/pull/25538