[jira] [Updated] (GROOVY-9970) Type argument inference does not work in closure

["Stefanos Chaliasos (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/GROOVY-9970?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Stefanos Chaliasos updated GROOVY-9970:
---------------------------------------
    Summary: Type argument inference does not work in closure  (was: Type argument incference does not work in closure)

> Type argument inference does not work in closure
> ------------------------------------------------
>
>                 Key: GROOVY-9970
>                 URL: https://issues.apache.org/jira/browse/GROOVY-9970
>             Project: Groovy
>          Issue Type: Bug
>          Components: Static compilation, Static Type Checker
>            Reporter: Stefanos Chaliasos
>            Priority: Major
>
> I have the following Groovy program.
> {code:groovy}
> class Foo {}
> final class A<T extends Foo> {
>   public T x;
>   A(T x) {
>     this.x = x;
>   }
> }
> @groovy.transform.CompileStatic
> public class C<T extends Number> {
>   public void foo(T args) {
>     final A<Foo> x = new A<>(new Foo()); // compiles
>     def closure = p -> {
>         final A<Foo> y = new A<>(new Foo()); // does not compile
>     }
>   }
> }
> {code}
> h2. Actual Behavior
> The program does not compile, and I get the following error.
> {code:java}
> org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
> Foo.groovy: 15: [Static type checking] - Cannot call A#<init>(T) with arguments [Foo]
>  @ line 15, column 26.
>            final A<Foo> y = new A<>(new Foo()); 
>                             ^
> 1 error
> {code}
> h2. Expected Behavior
> Compile successfully.
> h2. Comment
> This should be a regression bug because it compiles with the 3.0.7 compiler and the 4.0.0-alpha-2.
> h2. Affected Version
> This programs fails when compiled with the compiler from the master (commit: 5d2944523f198d96b6515e85a24d2b4e43ce665f)



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