[GROOVY-11071] Compiler error related to getAt and interface methods

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.17, 4.0.12
• Fix Version/s: 5.0.0-alpha-1
• Component/s: class generator
• Assignee: Eric Milles
• Reporter: Daniel Huss
• Created: 24/May/23 10:02
• Updated: 23/Aug/23 09:11
• Resolved: 24/May/23 20:12

Description

Error message:

BUG! exception in phase 'class generation' in source unit '...Reproducer.groovy' At line 11 column 21
On receiver: myMap with message: getAt and arguments: new Reproducer$Key()
This method should not have been called. 

Simple example reproducing the error:

import groovy.transform.CompileStatic
import org.junit.jupiter.api.Test

@CompileStatic
class Reproducer {

    @Test
    void reproduce() {
        MyMap myMap = null
        try {
            println(myMap[new Key()].toString())
        } catch (NullPointerException ignored) {
            // Expected
        }
    }

    static class Key {}

    static interface SomeMap<SELF extends SomeMap<SELF, K, V>, K, V> {
        V getAt(K key);
    }

    static interface MyMap extends SomeMap<MyMap, Key, Object> {}
}