bug#20909: incorrect partition size calculation

Hello, All!

incorrect partition size calculation

# parted -v
parted (GNU parted) 2.3

Model: ATA HGST HUS724040AL (scsi)
Disk /dev/sda: 7814037168s

how to reproduce:

parted -s /dev/sda mklabel gpt
parted -s /dev/sda -a none mkpart primary 34s 2047s
parted -s /dev/sda set 1 bios_grub on
parted -s /dev/sda mkpart primary 2048s 2099199s
parted -s /dev/sda set 2 raid on
parted -s /dev/sda mkpart primary 2099200s 102764543s
parted -s /dev/sda set 3 raid on
parted -s /dev/sda mkpart primary zfs 102764544s 7814037134s

parted
(parted) unit s
(parted) print free
Model: ATA HGST HUS724040AL (scsi)
Disk /dev/sda: 7814037168s
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start       End          Size         File system  Name     Flags
  1      34s         2047s        2014s                     primary 
bios_grub
  2      2048s       2099199s     2097152s                  primary  raid
  3      2099200s    102764543s   100665344s                primary  raid
  4      102764544s  7814037134s  7711272591s               primary

(parted)

=======================================

parted reports what /dev/sda4 partition has size of 7711272591s
but this is not true, partition size is 7711272590s:

7814037168 - 2014 -  2097152 - 100665344 - 34 - 34 == 7711272590

P.S.

sorry, I can't find bugzilla for parted and can't check
what this bug for parted was previously reported and fixed.

-- 
Best regards,
  Gena