Calling overridden vararg method from Java causes AbstractMethodError #1459
Description
To see this error in action, just unzip the attachment and run compile.bat followed with run.bat.
I have a base class (Java) with one method:
public abstract class AbstractBase {
abstract void doStuff(Object... params);
}I create an implementation for it in scala:
class Concrete extends AbstractBase {
override def doStuff(params:java.lang.Object*) = println("doStuff invoked")
}Finally, I have a Caller class (Java) which just calls the abovementioned method, as follows:
public class Caller {
public void callDoStuff(AbstractBase impl) {
impl.doStuff(new Object());
}
}Now, a direct call succeeds:
val impl = new Concrete
impl.doStuff(null)whereas the following fails
val impl = new Concrete
val caller = new Caller
caller.callDoStuff(impl)javac -version gives "1.6.0"
scalac -version gives "Scala compiler version 2.7.2.RC4"
I am running on Windows XP SP2 with scala 2.7.2.RC4.
java.lang.AbstractMethodError: base.AbstractBase.doStuff([Ljava/lang/Object;)V
at base.Caller.callDoStuff(Caller.java:5)
at foo.App$$.<init>(App.scala:17)
at foo.App$$.<clinit>(App.scala)
at foo.App.main(App.scala)