RFR: 7904141: JTReg should support running compact source files [v7]

[Jaikiran Pai]

On Thu, 19 Feb 2026 07:47:09 GMT, Christian Stein <cstein at openjdk.org> wrote:

>> Please review this change that adds support for running [JEP 512: Compact Source Files and Instance Main Methods](https://openjdk.org/jeps/512) as jtreg `main` tests.
>> 
>> This pull request also adds JDK 25 to the GHA-based CI workflow and updates to use newer GitHub actions: `actions/checkout at v6` and `actions/setup-java at v5`
>
> Christian Stein has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Address review suggestions

test/compactsourcefile/CompactSourceFileTest.gmk line 8:

> 6: # under the terms of the GNU General Public License version 2 only, as
> 7: # published by the Free Software Foundation.  Oracle designates this
> 8: # particular file as subject to the "Classpath" exception as provided

Looks like a copy/paste error - Classpath exceptions aren't needed for test files.

test/compactsourcefile/CompactSourceFileTest.gmk line 28:

> 26: #----------------------------------------------------------------------
> 27: 
> 28: ifdef JDK8HOME

I think we should instead do `ifndef JDK25HOME` here and verify that  the jtreg test fails when the Java version is lesser than 25.

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PR Review Comment: https://git.openjdk.org/jtreg/pull/313#discussion_r2828579640
PR Review Comment: https://git.openjdk.org/jtreg/pull/313#discussion_r2828589502