redef fun recv(mpi, at, count, source, tag, comm)
	do
		var array
		if at != 0 then
			array = native_array + at
		else array = native_array

		mpi.native_recv(array, count, new DataType.int,
			source, tag, new Comm.world, new Status.ignore)
	end

	redef fun recv(mpi, at, count, source, tag, comm)
	do
		var min_capacity = at + count
		if capacity < min_capacity then enlarge min_capacity

		var array
		if at != 0 then
			array = items + at
		else array = items

		mpi.native_recv(array, count, new DataType.char,
			source, tag, new Comm.world, new Status.ignore)

		length = capacity
	end