Sadly, I cannot reproduce the JVM crash in my minimal example. 

However, it reveals some other (probably access-related) issues in
LocalBeanProxyFactory.createProxy(...) which might have lead to the
crash in the actual project. 

It can be found here: https://github.com/rzo1/jdk16-testing

Gruss
Richard


Am Donnerstag, den 08.04.2021, 11:55 +0100 schrieb Jonathan Gallimore:
> A minimal example would be a big help, thank you!
> 
> Jon
> 
> On Thu, Apr 8, 2021 at 11:00 AM Zowalla, Richard <
> [email protected]> wrote:
> 
> > Hi Jon,
> > 
> > thanks for your response.
> > 
> > I am using the latest OpenJDK 16 build from AdoptOpenJDK (
> > https://adoptopenjdk.net/?variant=openjdk16&jvmVariant=hotspot) on
> > a
> > Ubuntu 20.04 LTS system.
> > 
> > If it helps: I could try to create a minimal example to reproduce
> > the
> > crash and push it to Github.
> > 
> > Gruss
> > Richard
> > 
> > Am Donnerstag, den 08.04.2021, 10:39 +0100 schrieb Jonathan
> > Gallimore:
> > > I did some of the original work on LocalBeanProxyFactory way
> > > back.
> > > I'm
> > > happy to take a look. Are you building your own JDK from source,
> > > or
> > > downloading a specific binary (if so, which one)?
> > > 
> > > Jon
> > > 
> > > On Thu, Apr 8, 2021 at 8:07 AM Zowalla, Richard <
> > > [email protected]> wrote:
> > > 
> > > > Hi,
> > > > 
> > > > I am doing some bleeding edge testing related to JDK/JRE 16
> > > > with
> > > > the
> > > > latest TomEE 8.0.7-SNAPSHOT as we have included some 3rd party
> > > > patches,
> > > > which should support JDK/JRE 16. One remaining thing is
> > > > OpenJPA,
> > > > which
> > > > will support J16 with 3.1.3-SNAPSHOT (so I have patched it in
> > > > my
> > > > test).
> > > > 
> > > > I get this weird JVM crash [1] probably related to
> > > > LocalBeanProxyFactory when deploying a JSF/JAX-RS WAR archive
> > > > via
> > > > the
> > > > TomEE Maven Plugin. Maybe someone has some thoughts on it (or a
> > > > hint)?
> > > > 
> > > > Gruss
> > > > Richard
> > > > 
> > > > 
> > > > [1] 
> > > > https://gist.github.com/rzo1/cf70056a0a27d4cb5a714d6211dc7563
> > > > 
> > > > 
> > --
> > Richard Zowalla, M.Sc.
> > Research Associate, PhD Student | Medical Informatics
> > 
> > Hochschule Heilbronn – University of Applied Sciences
> > Max-Planck-Str. 39
> > D-74081 Heilbronn
> > phone: +49 7131 504 6791
> > mail: [email protected]
> > web: https://www.mi.hs-heilbronn.de/
> > 
-- 
Richard Zowalla, M.Sc.
Research Associate, PhD Student | Medical Informatics

Hochschule Heilbronn – University of Applied Sciences
Max-Planck-Str. 39 
D-74081 Heilbronn 
phone: +49 7131 504 6791
mail: [email protected]
web: https://www.mi.hs-heilbronn.de/ 

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