IllegalAccessError accessing/invoking method reference to protected method in superclass

[guillerodriguez]

Issue details

I am getting an IllegalAccessError when trying to access/invoke a method reference to a protected method in a superclass. The issue looks similar to this:

• https://bugs.openjdk.java.net/browse/JDK-8227415
• https://bugs.openjdk.java.net/browse/JDK-8138667

I thought it was a Javac issue however I tried to build a console application to confirm this and the compiled code runs fine using a standard JRE, but fails when run using robovm. So I suspect a robovm compiler issue.

Reproduction steps/code

package testref;

import testref.b.B;

public class Main
{
    public static void main(String[] args)
    {
        new B().run();
    }
}

package testref.a;

public class A
{
    protected void exec() {
        System.out.print("Exec");
    }
}

package testref.b;

import testref.a.A;
import testref.c.C;

public class B extends A
{
    private final C c = new C();

    public void run() {
        c.run(this::exec);
    }
}

package testref.c;

public class C
{
    public interface Command
    {
        void run();
    }

    public void run(Command command)
    {
        command.run();
    }
}

Configuration

Build Tools:

• IDEA plugin
• Eclipse plugin
• Gradle plugin

Versions:

• Robovm-2.3.15-SNAPSHOT
• javac 1.8.0_202
• java version "1.8.0_202"

Build Targets:

Seen on real iOS devices, but reproducible on console sample app (see above).

---

Stacktrace

java.lang.IllegalAccessError: Attempt to access method testref.a.A.exec()V from class testref.b.B$$Lambda$1
at testref.b.B$$Lambda$1.run(Unknown Source)
at testref.c.C.run(C.java:12)
at testref.b.B.run(B.java:11)
at testref.Main.main(Main.java:9)

[dkimitsa]

fix proposed in #646