RFR: 8376534: Source launcher instantiates wrong class on inherited instance main [v3]

[Jonathan László Lampérth]

On Wed, 18 Feb 2026 14:23:05 GMT, Jonathan László Lampérth <jlamperth at openjdk.org> wrote:

>> Fix a bug where, for inherited instance main methods, the source launcher attempts to invoke main on an instance of the superclass/superinterface that declares main, instead of on an instance of the inheriting class.
>> 
>> <details closed>
>>   <summary>Failure Example</summary>
>> 
>> 
>> // A.java
>> class A extends B {}
>> ​
>> // B.java
>> class B {
>>     void main() {
>>         System.out.println(getClass().getName());
>>     }
>> }
>> 
>> 
>> 
>> $ java A.java
>> B // expected "A" here
>> ​
>> $ java B.java
>> B
>> ``` 
>> </details>
>> 
>> Note: There is still an issue with inheriting main from a different package in modular mode, which will be handled separately [JDK-8377010](https://bugs.openjdk.org/browse/JDK-8377010)
>
> Jonathan László Lampérth has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:
> 
>  - Merge remote-tracking branch 'upstream/master' into 8376534
>  - Add JBS ID to @bug in test
>  - Ensure source launcher instantiates correct class for inherited main

Thanks for the reviews!
I merged master and re-ran tier 1-3 testing, where there was 2 unrelated failures.

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PR Comment: https://git.openjdk.org/jdk/pull/29550#issuecomment-3923275392