diff -U3 /Users/admin/pgsql/contrib/pageinspect/expected/btree.out /Users/admin/pgsql/build/testrun/pageinspect/regress/results/btree.out
--- /Users/admin/pgsql/contrib/pageinspect/expected/btree.out	2026-01-18 20:16:33
+++ /Users/admin/pgsql/build/testrun/pageinspect/regress/results/btree.out	2026-01-18 20:21:02
@@ -148,23 +148,25 @@
 ERROR:  block number 7 is out of range
 DROP TABLE test2;
 SELECT * FROM bt_page_items('test1_a_idx', -1);
-ERROR:  invalid block number -1
+ERROR:  function bt_page_items(unknown, integer) does not exist
+LINE 1: SELECT * FROM bt_page_items('test1_a_idx', -1);
+                      ^
+DETAIL:  No function of that name accepts the given number of arguments.
 SELECT * FROM bt_page_items('test1_a_idx', 0);
-ERROR:  block 0 is a meta page
+ERROR:  function bt_page_items(unknown, integer) does not exist
+LINE 1: SELECT * FROM bt_page_items('test1_a_idx', 0);
+                      ^
+DETAIL:  No function of that name accepts the given number of arguments.
 SELECT * FROM bt_page_items('test1_a_idx', 1);
--[ RECORD 1 ]-----------------------
-itemoffset | 1
-ctid       | (0,1)
-itemlen    | 16
-nulls      | f
-vars       | f
-data       | 01 00 00 00 00 00 00 01
-dead       | f
-htid       | (0,1)
-tids       | 
-
+ERROR:  function bt_page_items(unknown, integer) does not exist
+LINE 1: SELECT * FROM bt_page_items('test1_a_idx', 1);
+                      ^
+DETAIL:  No function of that name accepts the given number of arguments.
 SELECT * FROM bt_page_items('test1_a_idx', 2);
-ERROR:  block number 2 is out of range
+ERROR:  function bt_page_items(unknown, integer) does not exist
+LINE 1: SELECT * FROM bt_page_items('test1_a_idx', 2);
+                      ^
+DETAIL:  No function of that name accepts the given number of arguments.
 SELECT * FROM bt_page_items(get_raw_page('test1_a_idx', -1));
 ERROR:  invalid block number
 SELECT * FROM bt_page_items(get_raw_page('test1_a_idx', 0));
@@ -190,7 +192,10 @@
 SELECT bt_page_stats('test1_a_hash', 0);
 ERROR:  "test1_a_hash" is not a btree index
 SELECT bt_page_items('test1_a_hash', 0);
-ERROR:  "test1_a_hash" is not a btree index
+ERROR:  function bt_page_items(unknown, integer) does not exist
+LINE 1: SELECT bt_page_items('test1_a_hash', 0);
+               ^
+DETAIL:  No function of that name accepts the given number of arguments.
 SELECT bt_page_items(get_raw_page('test1_a_hash', 0));
 ERROR:  block is a meta page
 CREATE INDEX test1_b_gist ON test1 USING gist(b);