[jira] [Assigned] (GROOVY-11560) Invalid compiler error for class which overrides a method having duplicate default definitions from interfaces

["Eric Milles (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/GROOVY-11560?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eric Milles reassigned GROOVY-11560:
------------------------------------

    Assignee: Paul King  (was: Daniel Sun)

> Invalid compiler error for class which overrides a method having duplicate default definitions from interfaces
> --------------------------------------------------------------------------------------------------------------
>
>                 Key: GROOVY-11560
>                 URL: https://issues.apache.org/jira/browse/GROOVY-11560
>             Project: Groovy
>          Issue Type: Bug
>            Reporter: Eric Milles
>            Assignee: Paul King
>            Priority: Major
>              Labels: default-methods
>
> This is a clone of GROOVY-10381 which solved the following:
> {code:java}
> package p;
> public interface A {
>   default void m() {}
> }
> public interface B {
>   default void m() {}
> }
> {code}
> {code:groovy}
> class C implements p.A, p.B {
>   void test() {
>     m()
>   }
> }
> {code}
> {{groovyc}} does not detect that {{m()}} must be overridden to resolve the conflict.  {{javac}} does produce an error, but it is still possible to import the interfaces from libraries and not trigger joint compilation.
> As noted in that issue, the following case isn't covered:
> {code:groovy}
> import package p.*
> class C implements A, B {
>   @Override
>   void m() {
>     A.super.m()
>   }
>   void test() {
>     m()
>   }
> }
> {code}
> The intention of this issue is to cover that missing case.



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