[jira] [Commented] (GROOVY-7849) Incompatible covariant array return type

["Shil Sinha (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/GROOVY-7849?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15312418#comment-15312418 ] 

Shil Sinha commented on GROOVY-7849:
------------------------------------

The error occurs without I2 as well e.g. if C implements I instead of I2.

> Incompatible covariant array return type
> ----------------------------------------
>
>                 Key: GROOVY-7849
>                 URL: https://issues.apache.org/jira/browse/GROOVY-7849
>             Project: Groovy
>          Issue Type: Bug
>          Components: Compiler
>    Affects Versions: 2.4.6
>            Reporter: Daniil Ovchinnikov
>
> Probably duplicates/is related to GROOVY-7185.
> Consider the snippet:
> {code}
> interface Base {}
> interface Derived extends Base {}
> interface I {
>   Base[] foo()
> }
> interface I2 extends I {
>   Derived[] foo()
> }
> class C implements I2 {
>   Derived[] foo() { null }
> }
> {code}
> Compilation fails with:
> {noformat}
> The return type of Derived[] foo() in C is incompatible with Base[] in I
> {noformat}



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