}

		dd, err := readDataDirectories(r, sz-uint16(oh64MinSz), oh64.NumberOfRvaAndSizes)
		if err != nil {
			return nil, err
		}

		copy(oh64.DataDirectory[:], dd)

		return &oh64, nil
	default:
		return nil, fmt.Errorf("optional header has unexpected Magic of 0x%x", ohMagic)
	}
}

// readDataDirectories accepts an io.ReadSeeker pointing to data directories in the PE file,