// The 7 type-introspection builtins (size_of, align_of, field_count,
// type_name, type_eq, type_is_unsigned, is_flags) take ONLY types. A
// value argument is a compile-time error, not a silently-reinterpreted
// TypeId index.
//
// Regression (issue 0090, attempt 2): each builtin used to accept a
// non-type value and reinterpret it — `type_is_unsigned(6)` read 6 as a
// TypeId and returned the signedness of types[6] (`u8` → true);
// `size_of(true)` sized `typeof(true)` (8). The strict `$T: Type` guard
// (`Lowering.reflectionTypeArgGuard`) now rejects any argument whose
// static type is not `Type` and emits "<builtin> expects a type, got
// '<type>'" at the offending argument, aborting (exit 1).
//
// Reject cases use `true`/`1.5` (whose types — bool/f64 — are stable)
// rather than an integer literal, so the pinned diagnostics don't drift
// when the int-literal default type changes.

#import "modules/std.sx";

main :: () {
    print("{}\n", size_of(true));          // bool, not a type
    print("{}\n", align_of(1.5));          // f64, not a type
    print("{}\n", field_count(true));      // bool, not a type
    print("{}\n", type_name(1.5));         // f64, not a type
    print("{}\n", type_eq(true, false));   // both bool — both rejected
    print("{}\n", type_is_unsigned(true)); // bool, not a type
    print("{}\n", is_flags(1.5));          // f64, not a type
}