[GROOVY-3799] Bug in passing in Var Args with Inheriters of Abstract classes

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.6.4
• Fix Version/s: 1.6.5, 1.7-beta-2
• Component/s: Compiler
• Assignee: Roshan Dawrani
• Reporter: Adam krieg
• Created: 29/Sep/09 10:28
• Updated: 15/Oct/09 17:15
• Resolved: 29/Sep/09 13:04

Description

I'm running into a problem with Groovy 1.6.4 that looks similar to
GROOVY-3560. I have the following java interface/classes:

public interface Foo {

}

public class AbstractFoo implements Foo{
}

public class ConcreteFoo implements Foo {
}

/**Implements Foo, but doesn't inherit from AbstractFoo **/
public class UnrelatedFoo implements Foo {
}

I also have the business java class, FooRunner:

public class FooRunner {
private final Foo[] foos;

public FooRunner(Foo... foos)

{ this.foos = foos; }

public Foo[] getFoos()

{ return foos; }

}

When I try to create a FooRunner from a Groovy script like so:

FooRunner runner = new FooRunner(new ConcreteFoo(), new UnrelatedFoo());
println runner.getFoos().length;

I get:
Caught: groovy.lang.GroovyRuntimeException: failed to invoke constructor:
public FooRunner(Foo[]) with arguments: [[ConcreteFoo@a9255c,
UnrelatedFoo@d3c6a3]]
reason: java.lang.IllegalArgumentException: argument type mismatch
at TestFoos.run(TestFoos.groovy:8)

This does work from Java. If I change my ConcreteFoo to implement Foo
instead of extending AbstractFoo, it works.