Shame on me, I didn't mention one thing in the original email. Actually, the problem starts for me with "make installcheck-world". And only then I've run a specific test 041_checkpoint_at_promote.pl. I.e. the whole sequence of the commands are: configure --enable_injection_points ... make world make install-world initdb ... pg_ctl ... start make installcheck-world
And all the tests passes perfectly, for example, in REL_15_STABLE because there is no opt like enable_injection_points. But this is not the case if we are dealing with the current master branch. So, my point here: installcheck-world doesn't work on the current master branch until I explicitly install injection_points extension. In my view, it's a bit wired, since neither test_decoding, pg_stat_statements or pg_prewarm demand it. -- Best regards, Maxim Orlov.
