parted - 3.6-1 fails with segmentation fault on asuswrt-merlin

[ColinTaylorUK]

Describe the bug
parted - 3.6-1: parted command refuses to run because it says "You found a bug in GNU Parted!"

Running most parted commands results in the error above. The only option that partially works is -l (list all partitions).

Environment (please complete the following information):

• Entware feed: aarch64-k3.10
• Device Asus: RT-AX86U router
• Firmware version: ASUSWRT-Merlin 3004.388.5_0

[ColinTaylorUK]

Still happening on Firmware version: ASUSWRT-Merlin 3004.388.7_0

# parted /dev/sda unit co print unit s print


You found a bug in GNU Parted! Here's what you have to do:

Don't panic! The bug has most likely not affected any of your data.
Help us to fix this bug by doing the following:

Check whether the bug has already been fixed by checking
the last version of GNU Parted that you can find at:

        http://ftp.gnu.org/gnu/parted/

Please check this version prior to bug reporting.

If this has not been fixed yet or if you don't know how to check,
please visit the GNU Parted website:

        http://www.gnu.org/software/parted

for further information.

Your report should contain the version of this release (3.6)
along with the error message below, the output of

        parted DEVICE unit co print unit s print

and the following history of commands you entered.
Also include any additional information about your setup you
consider important.

Command History:
Segmentation fault

[ColinTaylorUK]

Found a clue to the problem here: https://bugs.gentoo.org/646104

Setting the locale to anything other that ru_RU.UTF-8, en_US.UTF-8, POSIX or C causes the segmentation violation. I had mine set to en_GB.UTF-8 but I also tried de_DE.UTF-8, fr_FR.UTF-8 and it_IT.UTF-8.

More specifically, the problem is with the LC_CTYPE variable, e.g.:

# export LANG='en_GB.UTF-8'
# LC_CTYPE=C parted /dev/sda print
Model: TOSHIBA USB FLASH DRIVE (scsi)
Disk /dev/sda: 31.0GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:

Number  Start   End     Size    Type     File system  Flags
 1      16.4kB  15.5GB  15.5GB  primary  ext4
 2      15.5GB  31.0GB  15.5GB  primary  fat32

[ColinTaylorUK]

Fixed by adding en_GB to locale archive (see /opt/lib/opkg/info/locales.postinst).

# localedef.new -f UTF-8 -i en_GB en_GB.UTF-8
# locale.new -a
C
en_GB.utf8
en_US.utf8
POSIX
ru_RU.utf8