[jira] [Created] (GROOVY-10413) IllegalAccessException when using closures for functional interfaces with default methods

["Christoph Loy (Jira)" <ji...@apache.org>]

Christoph Loy created GROOVY-10413:
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             Summary: IllegalAccessException when using closures for functional interfaces with default methods
                 Key: GROOVY-10413
                 URL: https://issues.apache.org/jira/browse/GROOVY-10413
             Project: Groovy
          Issue Type: Bug
    Affects Versions: 3.0.9
         Environment: Groovy 3.0.9, Amazon Corretto 17.0, Windows 10 Enterprise, German, x64
            Reporter: Christoph Loy
         Attachments: groovy-bug-j17.zip

h3.  
h3. Given:
 * A functional interface `IStillFunctional` with a method `foo` and a default-method `bar`.
 * A java method `doConsume(IStillFunctional)` (defined in a Java-Class)

I get an `IllegalAccessException` when I pass a Closure to the `doConsume` method and then call the default-method `bar`.
h3. Stacktrace:

 
{code:java}
Caught: java.lang.reflect.InvocationTargetException
java.lang.reflect.InvocationTargetException
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at jdk.proxy2/jdk.proxy2.$Proxy18.bar(Unknown Source)
    at com.Consumer2.doConsume(Consumer2.java:6)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at com.GroovyMain.run(GroovyMain.groovy:3)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at com.GroovyMain.main(GroovyMain.groovy)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
Caused by: java.lang.IllegalAccessException: module jdk.proxy2 does not open jdk.proxy2 to unnamed module @51565ec2
    ... 19 more {code}
I attached a minimal project with this issue to the ticket.

 
h3. Observations:
 * The issue seems to happen in org.codehaus.groovy.runtime.ConversionHandler#invoke.
 * The issue does not happen when the Consumer-Class is defined in a Groovy file.
 * The issue did not occur under JDK 11



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