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Posted to notifications@groovy.apache.org by "Paul King (Jira)" <ji...@apache.org> on 2020/11/11 02:02:05 UTC

[jira] [Closed] (GROOVY-9570) Class-Level Closure Definition With Generics Fails TypeChecked

     [ https://issues.apache.org/jira/browse/GROOVY-9570?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Paul King closed GROOVY-9570.
-----------------------------

> Class-Level Closure Definition With Generics Fails TypeChecked
> --------------------------------------------------------------
>
>                 Key: GROOVY-9570
>                 URL: https://issues.apache.org/jira/browse/GROOVY-9570
>             Project: Groovy
>          Issue Type: Bug
>    Affects Versions: 2.5.5, 3.0.0, 3.0.3
>            Reporter: Ian
>            Assignee: Eric Milles
>            Priority: Major
>             Fix For: 4.0.0-alpha-1, 3.0.6
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
>  
>  
> {code:java}
> import groovy.transform.TypeChecked
> @TypeChecked
> abstract class A<T extends List>{
>     Collection<T> testQueue
>     Closure c = {
>         testQueue.each{T item->
>             println item
>         }
>     }
>     //def foo() {
>     //    testQueue.each{T item->
>     //        println item
>     //    }
>     //}
> }
> new A<LinkedList>(){}
> {code}
> Put this in filename.groovy and call "groovy filename.groovy" and I get
>  
> {noformat}
> org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
> /home/ianl/closureGeneric.groovy: 9: Expected parameter of type java.lang.Object but got T
>  @ line 7, column 24.
>            testQueue.each{T item->
>                           ^
> 1 error{noformat}
> Yet, uncomment the method foo() and there's no error there. or put the closure definition into the method and there's no error.



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