Also experiencing this with Java 17. but not Java 8, 11, or 21.

Example run: 
https://github.com/davidpcaldwell/slime/actions/runs/13268650799/job/37043056764

- David.

On Tue, Feb 11, 2025 at 11:23 AM Daniel Skiles
<dski...@docfinity.com.invalid> wrote:
>
> I'm seeing the same thing in tomcat 10.1.35 with openjdk version "17.0.13"
> 2024-10-15
>
> On Tue, Feb 11, 2025 at 8:00 AM Christopher Schultz <
> ch...@christopherschultz.net> wrote:
>
> > Jack,
> >
> > On 2/11/25 5:56 AM, Jack Green wrote:
> > > When you try to start `11.0.3` via:
> > > ```
> > > new Tomcat();
> > > ```
> > >
> > > An error is thrown:
> > > ```
> > > Exception in thread "main" java.lang.ExceptionInInitializerError
> > >       at TomcatReproducer.main(TomcatReproducer.java:6)
> > > Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make
> > field static final boolean java.io.FileSystem.useCanonCaches accessible:
> > module java.base does not "opens java.io <http://java.io/>" to unnamed
> > module @5a4041cc
> > >       at
> > java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354)
> > >       at
> > java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
> > >       at
> > java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:178)
> > >       at java.base/java.lang.reflect.Field.setAccessible(Field.java:172)
> > >       at
> > org.apache.tomcat.util.compat.JreCompat.<clinit>(JreCompat.java:87)
> > >       ... 1 more
> > > ```
> > >
> > > And Tomcat fails to start.
> > >
> > > This does _not_ affect `11.0.2` and appears to be introduced in
> > https://github.com/apache/tomcat/commit/bda730151a77a959e851104fe35e8c40ae6045d5
> > .
> > >
> > > `org.apache.tomcat.util.compat.JreCompat` tries to make
> > `java.io.FileSystem.useCanonCaches` accessible via reflection, which fails
> > due to module accessibility. There is a `catch` for
> > `ReflectiveOperationException` & `IllegalArgumentException`, but
> > `InaccessibleObjectException` is neither of those.
> > >
> > > You can _probably_ workaround the issue by adding an `--add-opens` VM
> > argument but this isn’t ideal, especially for a patch release.
> >
> > Which version of Java is this?
> >
> > -chris
> >
> >
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> >

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