// Issue 0008: Chained ?? (null coalescing) doesn't work
//
// `a ?? b ?? c` where a: ?f32, b: ?f32, c: f32 fails with:
//   "narrowing conversion from '?f32' to 'f32' requires explicit 'xx' cast"
//
// It parses as (a ?? b) ?? c, and the first ?? rejects ?f32 as the rhs.
//
// Expected: ?? should either be right-associative so it parses as a ?? (b ?? c),
// or allow ?T as the rhs (returning ?T when rhs is optional, T when rhs is concrete).
//
// Workaround: use parentheses — a ?? (b ?? c)

Foo :: struct {
    x: ?f32;
    y: ?f32;
}

main :: () -> void {
    f := Foo.{ x = 1.0, y = 2.0 };

    // This works:
    ok := f.x ?? (f.y ?? 0.0);

    // This should also work but fails:
    bad := f.x ?? f.y ?? 0.0;
}