// A flat-imported module authors its OWN `Box { a }`. The importing file (`main`)
// ALSO authors a `Box { m }` — its own author must win there (own-wins), while this
// module's `Box` stays a DISTINCT nominal type used by `dep_box`. The field sets
// are disjoint, so a cross-binding to the wrong `Box` is a hard compile error.
Box :: struct { a: s32; }

dep_box :: () -> s32 {
    b : Box = ---;
    b.a = 9;
    return b.a;
}