[jira] [Closed] (GROOVY-7974) Null operation in addition fails with Ambiguous method overloading despite cast

["Paul King (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/GROOVY-7974?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Paul King closed GROOVY-7974.
-----------------------------

> Null operation in addition fails with Ambiguous method overloading despite cast
> -------------------------------------------------------------------------------
>
>                 Key: GROOVY-7974
>                 URL: https://issues.apache.org/jira/browse/GROOVY-7974
>             Project: Groovy
>          Issue Type: Bug
>    Affects Versions: 2.4.7
>            Reporter: Lucian Chirita
>            Assignee: Jochen Theodorou
>         Attachments: A.groovy
>
>
> Doing something like 5 + (n as Number) where Object n = null fails with 
> {noformat}
> Ambiguous method overloading for method java.lang.Integer#plus.
> Cannot resolve which method to invoke for [null] due to overlapping prototypes between:
> 	[class java.lang.Character]
> 	[class java.lang.String]
> 	[class java.lang.Number]
> {noformat}
> A similar call works when you have a regular method overloaded for Character, String and Number.
> Also, trying to do 5.plus(n as Number) fails with
> {noformat}
> java.lang.ClassCastException: org.codehaus.groovy.runtime.wrappers.PojoWrapper cannot be cast to java.lang.Number
> {noformat}



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