The patch applied successfully, and the build completed without issues.
I verified that brin_index_check() is not available on an unpatched
build,and after applying the patch and updating the amcheck extension
to version 1.6 ,the function worked as expected.
I also ran some basic BRIN index validation tests successfully.
One small thing I noticed during testing :after installing the patched
build,I needed to run ALTER EXTENSION amcheck UPDATE before
brin_index_check() became available.
Regards,
Solai