[jira] [Commented] (GROOVY-12000) STC: instanceof or combined with not

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/GROOVY-12000?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18113370#comment-18113370 ] 

ASF GitHub Bot commented on GROOVY-12000:
-----------------------------------------

paulk-asert opened a new pull request, #2914:
URL: https://github.com/apache/groovy/pull/2914

   (no comment)




> STC: instanceof or combined with not
> ------------------------------------
>
>                 Key: GROOVY-12000
>                 URL: https://issues.apache.org/jira/browse/GROOVY-12000
>             Project: Groovy
>          Issue Type: Bug
>          Components: Static Type Checker
>    Affects Versions: 6.0.0-alpha-1
>            Reporter: Eric Milles
>            Priority: Major
>
> Consider the following:
> {code:groovy}
> @groovy.transform.TypeChecked
> void test(Number number) {
>   if (!(number instanceof Cloneable || number instanceof Closeable)) {
>     number
>   } else {
>     number
>   }
> }
> {code}
> Currently this passes the check for "can invert" and produces a type like (Number & (Cloneable | Closeable))" for the else path. Not sure if we're ready for that or not.



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