// An `Any` does not IMPLICITLY unbox to a concrete type. A blind unbox
// reinterprets the boxed payload word as the target with NO runtime tag check,
// so a wrong target silently yields garbage (a scalar) or dereferences the
// payload as a pointer and segfaults (an aggregate). sx rejects the implicit
// unbox at compile time — like the no-implicit-optional-unwrap rule — and
// directs the user to `match` on the value's type or an explicit `xx`.
//
// Regression (issue 0198): `s : S = some_any` segfaulted and `f : f64 = some_any`
// silently produced 0.0; both are now compile errors. The fix is in `coerceMode`
// (`.unbox_any` arm, mode == .implicit). The `xx` escape hatch and the
// compiler-generated type-dispatch / pack-extraction unboxes are unaffected.

#import "modules/std.sx";

S :: struct { a: i64; }

main :: () -> i64 {
    x : Any = 5;
    n : i64 = x;            // error: 'Any' does not implicitly unbox to 'i64'
    s : S = x;              // error: 'Any' does not implicitly unbox to 'S'
    return 0;
}