if (!u->size && !psi_plist_count(u->args)) {
data->error(data, u->token, PSI_WARNING,
"Cannot compute size of empty union %s", u->name);
if (!u->size && !psi_plist_count(u->args)) {
data->error(data, u->token, PSI_WARNING,
"Cannot compute size of empty union %s", u->name);