Hi All

I was surprised to find that the following does not work under vala 0.5.1

public interface InterfaceA {
   public abstract void function();
}

public class Instance : InterfaceA {
   public void function() {
   }
}

public static main(string[] args) {
  List<InterfaceA> list=new List<InterfaceA>();  // 1
  list.append(new Instance();
  foreach(InterfaceA i in list) {                // 2
    i.function();                                
  }
}

But I get errors:
  error: missing class prerequisite for interface 'InterfaceA'
on the lines marked with 1 and 2.

Is this correct behaviour?  If I need a use case like this, how would I 
implement it?

Regards

Matt

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