// IGNORE_BACKEND_K2: JVM_IR // FIR status: delegated implementation for `foo` is generated in `C`, which makes this code execute fine at runtime. // For K1, invoking `C.foo` leads to AbstractMethodError, see KT-46120. // Probably there should be a frontend error. (But if not, then K2 is correct.) // FILE: kt45934.kt class C(client: J) : I by client // FILE: I.java import java.util.List; public interface I { List foo(); } // FILE: J.java import java.util.List; public class J implements I { @Override public List foo() { return null; } }