cb_type = psi_decl_type_get_real(cb_var->arg->type);
if (cb_type->type != PSI_T_FUNCTION) {
data->error(data, cb_var->token, PSI_WARNING,
"Expected a function: %s",
cb_type = psi_decl_type_get_real(cb_var->arg->type);
if (cb_type->type != PSI_T_FUNCTION) {
data->error(data, cb_var->token, PSI_WARNING,
"Expected a function: %s",