[GROOVY-9293] Compilation error when accessing package-private super class field using `this` from inside a closure

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.5.8, 3.0.0-rc-1
• Fix Version/s: 3.0.0-rc-2, 2.5.19
• Component/s: Static compilation
• Assignee: Eric Milles
• Reporter: Daniel Sun
• Created: 28/Oct/19 14:13
• Updated: 25/Aug/22 21:11
• Resolved: 30/Oct/19 08:21

Description

Compilation fails when accessing a package-private super class field from inside a closure:

// error message:  java.lang.IllegalAccessError: class a.ConcreteClass$_doThing_closure1 tried to access field a.Abstract_Class.superField (a.ConcreteClass$_doThing_closure1 is in unnamed module of loader groovy.lang.GroovyClassLoader$InnerLoader @5fa47fea; a.Abstract_Class is in unnamed module of loader groovy.lang.GroovyClassLoader$InnerLoader @28cda624)

       GroovyShell shell = new GroovyShell()
        shell.evaluate('''
            package a
            
            import groovy.transform.CompileStatic
            
            @CompileStatic
            abstract class Abstract_Class {
                @groovy.transform.PackageScope String superField = 'field'
                
                abstract String doThing()
            }
            assert true
        ''')

        shell.evaluate('''
            package a
            
            import a.Abstract_Class
            import groovy.transform.CompileStatic
            
            @CompileStatic
            class ConcreteClass extends Abstract_Class {
               
                @Override
                String doThing() {
                    this.with {
                        return this.superField
                    }
                }
            }
            assert true
        ''')

        shell.evaluate("assert new a.ConcreteClass().doThing() == 'field'")

Issue Links

• is a clone of: GROOVY-9292 Compilation error when accessing a protected super class field from a closure using owner, delegate or thisObject qualifier (different package)