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

["Lucian Chirita (JIRA)" <ji...@apache.org>]

Lucian Chirita created GROOVY-7974:
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             Summary: 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


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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