commit 91c84d50ba4b1c75749e4c160e1d4a25ca684fda
Author: Anton A. Melnikov <a.melnikov@postgrespro.ru>
Date:   Wed Nov 1 23:58:19 2023 +0300

    Exclude extensions' GUCs from the 003_check_guc.pl

diff --git a/src/test/modules/test_misc/t/003_check_guc.pl b/src/test/modules/test_misc/t/003_check_guc.pl
index 4fd6d03b9e..63fcd754de 100644
--- a/src/test/modules/test_misc/t/003_check_guc.pl
+++ b/src/test/modules/test_misc/t/003_check_guc.pl
@@ -19,7 +19,7 @@ my $all_params = $node->safe_psql(
 	"SELECT name
      FROM pg_settings
    WHERE NOT 'NOT_IN_SAMPLE' = ANY (pg_settings_get_flags(name)) AND
-       name <> 'config_file'
+       name <> 'config_file' AND name NOT LIKE '%.%'
      ORDER BY 1");
 # Note the lower-case conversion, for consistency.
 my @all_params_array = split("\n", lc($all_params));