BUG #17421: Core dump in ECPGdo() when calling PostgreSQL API from 32-bit client for RHEL8

The following bug has been logged on the website:

Bug reference: 17421
Logged by: Masayuki Hirose
Email address: hirose(dot)masay-01(at)jp(dot)fujitsu(dot)com
PostgreSQL version: 12.1
Operating system: Red Hat Enterprise Linux
Description:

Core dump in ECPGdo() when calling PostgreSQL API from 32-bit client for
RHEL8

Hello, I have encountered the core dump in ECPGdo () issue.
Have you ever seen this error?
--------
(gdb) where
#0 0xf7163dc7 in strlen () from /usr/lib/libc.so.6
#1 0x08169faf in dopr ()
#2 0x08169c19 in pg_vsnprintf ()
#3 0x08169c6b in pg_snprintf ()
#4 0x08153ec7 in ecpg_raise_backend ()
#5 0x081540bb in ecpg_check_Pqresult ()
#6 0x0814da6a in ecpg_autostart_transaction ()
#7 0x0814ebc6 in ecpg_do ()
#8 0x0814ec79 in ECPGdo ()
#9 0xf7f96e40 in TJVvDatabaseAPI::_ExecSQL (this=0x9fb73f0, ctxnum=0,
--------

I am using the 32-bit client for RHEL8 and it calls PostgreSQL API, thus I
encountered this error.

Regards,
Masa