ServiceLoader fails for Java 23 with preview enabled

[Jaikiran Pai]

Hello Robert,

This certainly looks like a behavioural change that would need 
investigation. So yes, a reproducer will be helpful.

-Jaikiran

On 13/10/24 5:23 pm, Robert Scholte wrote:
>
> Hi,
>
> It seems there’s a change in the ServiceLoader, and it looks like 
> regression to me.
>
> I’ve created a small project to reproduce it (I can provide it if 
> wanted and confirmed this is indeed a bug).
>
> What it basically does is just:
>
> ServiceLoader.load(Car.class).findFirst().orElseThrow();
>
> This succeeds with OpenJDK 22 (with and without preview enabled flag)
>
> It also succeeds with OpenJDK 23 without the preview flag.
>
> However, when adding the preview flag I get:
>
> java.util.NoSuchElementException: No value present
>
>         at java.base/java.util.Optional.orElseThrow(Optional.java:377)
>
>         at 
> nl.sourcegrounds.serviceloader.tck.CarTest.<init>(CarTest.java:16)
>
> Anyone who can already explain this with this small amount of information?
>
> Thanks,
>
> Robert Scholte
>
> These are the details for both versions (Windows OS)
>
> openjdk version "22" 2024-03-19
>
> OpenJDK Runtime Environment (build 22+36-2370)
>
> OpenJDK 64-Bit Server VM (build 22+36-2370, mixed mode, sharing)
>
> openjdk version "23" 2024-09-17
>
> OpenJDK Runtime Environment (build 23+37-2369)
>
> OpenJDK 64-Bit Server VM (build 23+37-2369, mixed mode, sharing)
>
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