diff -U3 /Users/admin/pgsql/contrib/pg_buffercache/expected/pg_buffercache.out /Users/admin/pgsql/build/testrun/pg_buffercache/regress/results/pg_buffercache.out
--- /Users/admin/pgsql/contrib/pg_buffercache/expected/pg_buffercache.out	2025-02-26 09:04:12
+++ /Users/admin/pgsql/build/testrun/pg_buffercache/regress/results/pg_buffercache.out	2025-02-26 09:09:49
@@ -29,7 +29,10 @@
 SELECT * FROM pg_buffercache;
 ERROR:  permission denied for view pg_buffercache
 SELECT * FROM pg_buffercache_pages() AS p (wrong int);
-ERROR:  permission denied for function pg_buffercache_pages
+ERROR:  function pg_buffercache_pages() does not exist
+LINE 1: SELECT * FROM pg_buffercache_pages() AS p (wrong int);
+                      ^
+HINT:  No function matches the given name and argument types. You might need to add explicit type casts.
 SELECT * FROM pg_buffercache_summary();
 ERROR:  permission denied for function pg_buffercache_summary
 SELECT * FROM pg_buffercache_usage_counts();