ctf_dyn_lookup_by_id
extern const ctf_type_t *ctf_dyn_lookup_by_id(ctf_file_t *, ctf_id_t);
if ((t = ctf_dyn_lookup_by_id(cup->cu_ctfp, ref_id)) == NULL)
if ((t = ctf_dyn_lookup_by_id(cup->cu_ctfp, id)) == NULL)