[jira] [Assigned] (GROOVY-9983) Type argument inference does not work in ternary operator

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

     [ https://issues.apache.org/jira/browse/GROOVY-9983?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eric Milles reassigned GROOVY-9983:
-----------------------------------

    Assignee: Eric Milles

> Type argument inference does not work in ternary operator
> ---------------------------------------------------------
>
>                 Key: GROOVY-9983
>                 URL: https://issues.apache.org/jira/browse/GROOVY-9983
>             Project: Groovy
>          Issue Type: Bug
>          Components: Static compilation, Static Type Checker
>            Reporter: Stefanos Chaliasos
>            Assignee: Eric Milles
>            Priority: Major
>
> I have the following Groovy program.
> {code:groovy}
> @groovy.transform.CompileStatic
> public class Test {
>   public static void main(String[] args) {
>       final A<B> x = (true ? new A<>(new B()): new A<>(new C()))
>       bar(x) // compiles
>       bar((true ? new A<>(new B()): new A<>(new C()))) // does not compile
>   }
>   public static void bar(A<B> x) {}
> }
> class A<T> {
>   T f;
>   public A(T f) {
>     this.f = f;
>   }
> }
> class B {}
> class C extends B{}
> {code}
> h2. Actual Behavior
> The program does not compile, and I get the following error.
> {code:java}
> org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
> Test.groovy: 6: [Static type checking] - Cannot call Test#bar(A <B>) with arguments [A <? extends B>]
>  @ line 6, column 7.
>          bar((true ? new A<>(new B()): new A<>(new C())))
>          ^
> 1 error
> {code}
> h2. Expected Behavior
> Compile successfully.
> h2. Comment
> This should be a regression bug because it compiles with the 4.0.0-alpha-2 compiler.
> h2. Affected Version
> This programs fails when compiled with the compiler from the master (commit: f0eea862549529ef4e93fafe337f86dd4ac98751).



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