return class;
`}
redef fun to_s do return native_to_s.to_s
private fun native_to_s: NativeString `{
char *err = malloc(MPI_MAX_ERROR_STRING);
return class;
`}
redef fun to_s do return native_to_s.to_s
private fun native_to_s: NativeString `{
char *err = malloc(MPI_MAX_ERROR_STRING);