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Posted to notifications@groovy.apache.org by "Eric Milles (Jira)" <ji...@apache.org> on 2022/05/20 14:24:00 UTC

[jira] [Assigned] (GROOVY-10633) Invalid type substitution when encountering bounded type parameter and the diamond operator

     [ https://issues.apache.org/jira/browse/GROOVY-10633?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eric Milles reassigned GROOVY-10633:
------------------------------------

    Assignee: Eric Milles

> Invalid type substitution when encountering bounded type parameter and the diamond operator
> -------------------------------------------------------------------------------------------
>
>                 Key: GROOVY-10633
>                 URL: https://issues.apache.org/jira/browse/GROOVY-10633
>             Project: Groovy
>          Issue Type: Bug
>          Components: Static Type Checker
>            Reporter: Thodoris Sotiropoulos
>            Assignee: Eric Milles
>            Priority: Major
>
> This bug is a regression.
> I have the following program:
> {code}
> class A<T, Y> {
>   B<Y> f;
>   A(B<Y> x, T y) {}
> }
> class B<T> {
>   void m(T x) {}
> }
> class Test {
>   <T extends Number> void test() {
>     def x = new B<T>();
>     new A<>(x, "").f.m((T) null);
>   }
> }
> {code}
> h3. Actual behavior
> {code}
> org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
> test.groovy: 13: [Static type checking] - Cannot find matching method B#m(T). Please check if the declared type is correct and if the method exists.
>  @ line 13, column 5.
>        new A<>(x, "").f.m((T) null);
>        ^
> 1 error
> {code}
> h3. Expected behaviour 
> Compile successfully
> Tested against master (commit: a976ecdee1f17f7fafc55767de2d857c44d44697)



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