[GROOVY-7039] Access to constant fields in classes implementing constant interfaces erroneously forbidden in @CompileStatic code

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4.0-beta-2
• Fix Version/s: 2.3.8, 2.4.0-beta-4
• Component/s: Static compilation
• Assignee: Cédric Champeau
• Reporter: Janusz Nykiel
• Created: 25/Aug/14 07:13
• Updated: 17/Dec/14 13:25
• Resolved: 05/Nov/14 03:26

Description

Compilation of the following files:

MyConstants.java

public interface MyConstants  {
    public static final String CONSTANT_1 = "this is constant 1";
}

MyClass.java

public class MyClass implements MyConstants {
}

Program.groovy

@groovy.transform.CompileStatic
class Program {
    public static void main(String[] args) {
        println MyClass.CONSTANT_1
    }
}

ends with error:

Error:(4, 17) Groovyc: Access to MyClass#CONSTANT_1 is forbidden

For example, the error makes it difficult and counterintuitive to access BaseColumns members via any of content provider contract classes (like ContactsContract) - you need to refer to the interface directly.