[jira] [Resolved] (GROOVY-7306) Invalid stub generated for a constructor using a generic bounded parameter

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

     [ https://issues.apache.org/jira/browse/GROOVY-7306?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Eric Milles resolved GROOVY-7306.
---------------------------------
    Fix Version/s: 4.0.0-alpha-3
       Resolution: Fixed

> Invalid stub generated for a constructor using a generic bounded parameter
> --------------------------------------------------------------------------
>
>                 Key: GROOVY-7306
>                 URL: https://issues.apache.org/jira/browse/GROOVY-7306
>             Project: Groovy
>          Issue Type: Bug
>          Components: Stub generator / Joint compiler
>    Affects Versions: 2.4.0, 2.4.1
>            Reporter: Frank Pavageau
>            Assignee: Eric Milles
>            Priority: Major
>             Fix For: 4.0.0-alpha-3
>
>         Attachments: generic-superclass-stub.tar.gz
>
>          Time Spent: 40m
>  Remaining Estimate: 0h
>
> Given the 2 following classes:
> {code}
> class A<T extends Number> {
>     final T value
>     A(T value) {
>         this.value = value
>     }
> }
> {code}
> and
> {code}
> class B extends A<Integer> {
>     B(Integer value) {
>         super(value)
>     }
> }
> {code}
> the generated stub for B does not compile, as the constructor parameter is cast to the bounded type instead of the actual type:
> {code}
> public class B
>   extends A<java.lang.Integer> {
> ;
> public B
> (java.lang.Integer value) {
> super ((java.lang.Number)null);
> }
> // ...
> }
> {code}
> The error returned by the compiler is:
> {noformat}
> target/generated-sources/groovy-stubs/main/B.java:[13,1] constructor A in class A<T> cannot be applied to given types;
>   required: java.lang.Integer
>   found: java.lang.Number
>   reason: actual argument java.lang.Number cannot be converted to java.lang.Integer by method invocation conversion
> {noformat}
> I've attached a test case, which is also available on [Github|https://github.com/fpavageau/generic-superclass-stub].



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