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https://issues.apache.org/jira/browse/GROOVY-7933?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15484616#comment-15484616
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John Wagenleitner commented on GROOVY-7933:
-------------------------------------------

I am able to reproduce and also find that, as reported, adding CompileStatic or 
casting makes it pass.

{code}
public class Demo {

   public String a(boolean a) {
        'boolean was called'
   }

   public String a(Object a) {
        'Object was called'
   }

   static void main(args) {
       assert new Demo().a((boolean)true) == 'boolean was called' //pass
       assert new Demo().a(true) == 'boolean was called'          //fail
   }
}
{code}

> Incorrect boxing of boolean primitive types
> -------------------------------------------
>
>                 Key: GROOVY-7933
>                 URL: https://issues.apache.org/jira/browse/GROOVY-7933
>             Project: Groovy
>          Issue Type: Bug
>          Components: groovy-runtime
>    Affects Versions: 2.4.7
>            Reporter: Henri Tremblay
>
> A boolean primitive type seems to be boxed for no apparent reason. See the 
> example below. The problem disappear when using @CompileStatic or if 
> explicitly casting to (boolean).
> {code:java}
> public class Demo {
>    public void a(boolean a){
>        System.out.println("boolean was called");
>    }
>    public void a(Object a){
>        System.out.println("Object was called");
>    }
> }
> class Groovy {
>    static void main(String[] args) {
>        def demo = new Demo()
>        demo.a(true)
>    }
> }
> {code}
> *Output:*
> Object was called



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