1e01aa904Sopenharmony_cienum opaque_enum; 2e01aa904Sopenharmony_cistruct opaque_struct; 3e01aa904Sopenharmony_ci 4e01aa904Sopenharmony_citypedef enum opaque_enum opaque_enum; 5e01aa904Sopenharmony_citypedef struct opaque_struct opaque_struct; 6e01aa904Sopenharmony_ci 7e01aa904Sopenharmony_civoid 8e01aa904Sopenharmony_cifn(opaque_struct *, opaque_enum *e); 9