[jira] [Commented] (GROOVY-9934) Bounded type parameter is not captured by closure

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

    [ https://issues.apache.org/jira/browse/GROOVY-9934?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17282595#comment-17282595 ] 

Eric Milles commented on GROOVY-9934:
-------------------------------------

This has been resolved by one of the recent fixes in Groovy 4.  The necessary change has not been merged into Groovy 3 yet.

> Bounded type parameter is not captured by closure
> -------------------------------------------------
>
>                 Key: GROOVY-9934
>                 URL: https://issues.apache.org/jira/browse/GROOVY-9934
>             Project: Groovy
>          Issue Type: Bug
>          Components: Static compilation
>    Affects Versions: 3.0.7
>            Reporter: Thodoris Sotiropoulos
>            Assignee: Eric Milles
>            Priority: Major
>
> I have the following Groovy program
> {code:java}
> class Bar {}
> class Foo<T extends Bar> {
>   public T method(T x) {
>     def bar = {x}
>     return bar()
>   }
> }
> {code}
> h3. Actual Behavior
> The compiler raise the following compile-time error 
> {code:java}
> org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
> Main.groovy: 6: [Static type checking] - Cannot return value of type java.lang.Object on method returning type T
>  @ line 6, column 12.
>        return bar()
>               ^1 error
> {code}
> h3. Expected Behavior
> Compile successfully. Notably, when I remove the "extends" keyword from the type parameter, the code type checks as expected.
>  



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