[jira] [Updated] (GROOVY-10316) Type variable inference does not work properly in nested diamond operators

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

     [ https://issues.apache.org/jira/browse/GROOVY-10316?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eric Milles updated GROOVY-10316:
---------------------------------
    Fix Version/s: 4.0.3

> Type variable inference does not work properly in nested diamond operators
> --------------------------------------------------------------------------
>
>                 Key: GROOVY-10316
>                 URL: https://issues.apache.org/jira/browse/GROOVY-10316
>             Project: Groovy
>          Issue Type: Bug
>          Components: Static Type Checker
>            Reporter: Thodoris Sotiropoulos
>            Assignee: Eric Milles
>            Priority: Major
>             Fix For: 5.0.0-alpha-1, 4.0.3
>
>
> I have the following program
> {code:java}
> class A<T> {
>   T f;
>   A(T f) {
>     this.f = f;
>   }
> }
> class B<T> {
>   A<T> f;
>   B(A<T> f) {
>     this.f = f;
>   }
> }
> class Test {
>   void test() {
>     def x = new  B<>(new A<>((long) 1)).f;
>     A<Long> y = x;
>   }
>   
> }
> {code}
> h3. Actual behaviour
> {code}
> org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
> test.groovy: 18: [Static type checking] - Incompatible generic argument types. Cannot assign A<java.lang.Object> to: A<java.lang.Long>
>  @ line 18, column 17.
>        A<Long> y = x;
>                    ^
> 1 error
> {code}
> h3. Expected behaviour
> Compile successfully
> Tested against master



--
This message was sent by Atlassian Jira
(v8.20.7#820007)