[GROOVY-3878] Can't call Java varargs method when it's mixed in to toplevel

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.6.5, 1.7-beta-2
• Fix Version/s: 1.6.6, 1.7-rc-1
• Environment: Java 1.5, OS X Leopard.
• Assignee: Paul King
• Reporter: Aslak Hellesoy
• Created: 11/Nov/09 21:30
• Updated: 07/Apr/15 19:13
• Resolved: 13/Nov/09 07:20

Description

Take this Java class:

Dsl.java

public class Dsl {
    public static void novarargs(java.util.List s) {
        System.out.println("novarargs ok");
    }

    public static void varargs(Object... s) {
        System.out.println("varargs ok");
    }
}

Run it with Groovy:

UseDsl.groovy

this.metaClass.mixin(Dsl)

Dsl.novarargs(["a", "b"])
novarargs(["a", "b"])

Dsl.varargs("a", "b")
varargs("a", "b")    // fails here

The last one fails:

javac Dsl.java && groovy UseDsl.groovy 

Caught: java.lang.IllegalArgumentException: wrong number of arguments
	at UseDsl.run(UseDsl.groovy:7)