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https://issues.apache.org/jira/browse/DELTASPIKE-1432?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17379717#comment-17379717
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Thomas Andraschko commented on DELTASPIKE-1432:
---
[~christian.beikov] interessted in providing a PR?
> Proxy class definition does not work
>
>
> Key: DELTASPIKE-1432
> URL: https://issues.apache.org/jira/browse/DELTASPIKE-1432
> Project: DeltaSpike
> Issue Type: Improvement
> Security Level: public(Regular issues)
> Components: Proxy-Module
>Affects Versions: 1.9.5
>Reporter: Christian Beikov
>Priority: Major
>
> In
> {{org.apache.deltaspike.proxy.impl.AsmDeltaSpikeProxyClassGenerator#loadClass}}
> the current implementation always tries to make the
> {{ClassLoader#defineClass}} method (of module java.base) accessible which is
> disallowed by default since 16. To workaround this, one has to add the
> following command line flags {{\--add-opens java.base/java.lang=ALL-UNNAMED}}
> or {{\--add-opens java.base/java.lang=deltaspike.proxy.module.impl.asm}} if
> running in modular mode. This can be properly implemented though by using the
> new supported API {{java.lang.invoke.MethodHandles.Lookup#defineClass}} like
> Weld 3.1.7 now also did. This would help usability of Deltaspike a lot.
> Here is the exception one sees without the flag:
>
> {code}
> java.lang.reflect.InaccessibleObjectException: Unable to make protected final
> java.lang.Class
> java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int,java.security.ProtectionDomain)
> throws java.lang.ClassFormatError accessible: module java.base does not
> "opens java.lang" to module deltaspike.proxy.module.impl.asm
> at
> java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:357)
> at
> java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
> at
> java.base/java.lang.reflect.Method.checkCanSetAccessible(Method.java:199)
> at
> java.base/java.lang.reflect.Method.setAccessible(Method.java:193)
> at
> deltaspike.proxy.module.impl.asm@1.9.4/org.apache.deltaspike.proxy.impl.AsmDeltaSpikeProxyClassGenerator.loadClass(AsmDeltaSpikeProxyClassGenerator.java:528)
> at
> deltaspike.proxy.module.impl.asm@1.9.4/org.apache.deltaspike.proxy.impl.AsmDeltaSpikeProxyClassGenerator.generateProxyClass(AsmDeltaSpikeProxyClassGenerator.java:73)
> {code}
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