[GROOVY-8854] MissingMethodException when a public method on a trait calls a static private one in a class hierarchy

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4.15, 3.0.0-alpha-3, 2.5.3
• Fix Version/s: 5.0.0-alpha-2
• Labels: traits

Language

groovy

• Assignee: Eric Milles
• Reporter: Iván López
• Created: 23/Oct/18 07:17
• Updated: 16/Jan/24 18:47
• Resolved: 10/Sep/23 22:13

Description

The following code fails at runtime:

trait Validateable {

    boolean validate() {
        return foo()
    }

    private static boolean foo() {
        return false
    }
}

class DomainObject implements Validateable {
    String name
}

class Child extends DomainObject {
}

def child = new Child(name: 'name')
child.validate()

With this error:

groovy.lang.MissingMethodException: No signature of method: Child.foo() is applicable for argument types: () values: []

Keep in mind that the Trait method is framework-code (in this case from Grails) and DomainObject and Child classes are user-code.

Issue Links

• is related to: GROOVY-7191 CompileStatic Will Not Allow Instance Method In Trait To Call Static Method
• is related to: GROOVY-7322 Problem With Static Trait Methods
• is related to: GROOVY-8272 Extending trait can't execute static method
• is related to: GROOVY-8587 Calling super in an overridden method results in MissingMethodException when method indirectly inherited from trait
• is related to: GROOVY-11267 Trait static methods are not resolved when called from closure
• is related to: GROOVY-10312 MissingMethodException in method with default parameter in trait - regression in 3.0.9