> thanks and sorry for the issues, please find attached updated version.

No problem.

This time the patch applies fine, no compiler warnings.  However,
regression test did not passed here (on Ubuntu 24 LTS if this
matters).  So I looked into
src/test/regression/tests/041.external_replication_delay/test.sh a
little bit and apply attached patch (test.sh.patch). It moved forward
partially but failed at:

fail: command execution failure not detected

Please find attached
src/test/regression/tests/041.external_replication_delay/testdir/pgpool.log
and src/test/regression/log/041.external_replication_delay.

Best regards,
--
Tatsuo Ishii
SRA OSS K.K.
English: http://www.sraoss.co.jp/index_en/
Japanese:http://www.sraoss.co.jp