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https://issues.apache.org/jira/browse/GROOVY-7011?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14979971#comment-14979971
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Jochen Theodorou commented on GROOVY-7011:
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btw, `MessageValue await(MessageValue<ICommand> pattern) { await '', pattern
}` is imho never created
> Trait methods with default arguments do not work correctly
> ----------------------------------------------------------
>
> Key: GROOVY-7011
> URL: https://issues.apache.org/jira/browse/GROOVY-7011
> Project: Groovy
> Issue Type: Bug
> Affects Versions: 2.3.6
> Environment: OSX 10.9, Java 1.7_67
> Reporter: Aaron Long
> Assignee: Cédric Champeau
> Fix For: 2.3.10, 2.4.0-rc-1
>
>
> The following code:
> {code}
> trait HiSupport {
> def sayHi(String msg = "hi") {
> println msg
> }
> }
> class A implements HiSupport { }
> new A().sayHi()
> {code}
> Produces incorrect results. The trait method is called without any
> dispatching complaints, however it just ignores the default argument.
> If default arguments are not supported, it seems like it should be a compile
> failure or at least a failure during dispatch.
> If the trait method has multiple arguments, the method dispatch does result
> in a failure:
> {code}
> trait HiSupport {
> def sayHi(String name, String msg = "hi") {
> println msg + name
> }
> }
> class A implements HiSupport { }
> new A().sayHi("Bob")
> {code}
> {code}
> groovy.lang.MissingMethodException: No signature of method: A.sayHi() is
> applicable for argument types: (java.lang.String) values: [Bob]
> Possible solutions: sayHi(java.lang.String, java.lang.String), wait(), any(),
> each(groovy.lang.Closure), asType(java.lang.Class), wait(long)
> at ConsoleScript50.run(ConsoleScript50:9)
> {code}
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