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  1. Groovy
  2. GROOVY-6030

"Reference to method is ambiguous" reported for unambiguous usage of List implementors

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Details

    • Bug
    • Status: Closed
    • Minor
    • Resolution: Fixed
    • 2.1.1
    • 2.1.2
    • Static Type Checker
    • None

    Description

      For List implementors which extend Object, some methods (e.g., find) are considered ambiguous, although the List implementation should win.

      Test case:

      86 /tmp> >q.groovy
class Mylist implements List {}
@groovy.transform.TypeChecked class t {
   def whatthe(Mylist a) {
       a.find { true }
   }
}
87 /tmp> groovyc q.groovy

      org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
q.groovy: 4: [Static type checking] - Reference to method is ambiguous. Cannot choose between [java.lang.Object <T> java.util.Collection <T>#find(groovy.lang.Closure), java.lang.Object java.lang.Object#find(groovy.lang.Closure)]

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            melix Cédric Champeau
            oc OC
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              Created:
              Updated:
              Resolved: