type_t *make_atomic_type(atomic_type_kind_t type, type_qualifiers_t qualifiers);
type_t *make_pointer_type(type_t *points_to, type_qualifiers_t qualifiers);
+type_t *make_array_type(type_t *element_type, size_t size,
+ type_qualifiers_t qualifiers);
type_t *duplicate_type(const type_t *type);