The flowing code cause valac error:

public class Foo : GLib.Object {
    public virtual void func() {
    }
   
    internal static void bug () {
        new Bar ();
    }
}
public class Bar : Foo {
    public override void func() {
    }
}

Valac(0.16.1) gives:

$ valac main.vala
main.vala:11.2-11.26: error: Bar.func: no suitable method found to override
    public override void func() {
    ^^^^^^^^^^^^^^^^^^^^^^^^^
Compilation failed: 1 error(s), 0 warning(s)

When there's some method inside classes(e.g. "bug"), no matter if it's static or not,
that calls Bar contractor, valac gives this error.

However, if "bug" method is outside of Foo class blocks, valac compiles fine.

Hope you can fix this.
Tal