diff -U3 /tmp/cirrus-ci-build/contrib/pg_freespacemap/expected/pg_freespacemap.out /tmp/cirrus-ci-build/build/testrun/pg_freespacemap/regress/results/pg_freespacemap.out
--- /tmp/cirrus-ci-build/contrib/pg_freespacemap/expected/pg_freespacemap.out	2024-03-27 22:35:12.776669000 +0000
+++ /tmp/cirrus-ci-build/build/testrun/pg_freespacemap/regress/results/pg_freespacemap.out	2024-03-27 22:53:21.718947000 +0000
@@ -8,6 +8,8 @@
   SELECT rel.id, fsm.blkno, (fsm.avail > 0) AS is_avail
     FROM rel, LATERAL pg_freespace(rel.id) AS fsm
     ORDER BY 1, 2;
+WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
+WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
        id        | blkno | is_avail 
 -----------------+-------+----------
  freespace_brin  |     0 | f
@@ -32,6 +34,8 @@
   SELECT rel.id, fsm.blkno, (fsm.avail > 0) AS is_avail
     FROM rel, LATERAL pg_freespace(rel.id) AS fsm
     ORDER BY 1, 2;
+WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
+WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
        id        | blkno | is_avail 
 -----------------+-------+----------
  freespace_tab   |     0 | t
@@ -58,6 +62,8 @@
   SELECT rel.id, fsm.blkno, (fsm.avail > 0) AS is_avail
     FROM rel, LATERAL pg_freespace(rel.id) AS fsm
     ORDER BY 1, 2;
+WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
+WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
        id        | blkno | is_avail 
 -----------------+-------+----------
  freespace_brin  |     0 | f
@@ -79,7 +85,9 @@
 
 -- failures with incorrect block number
 SELECT * FROM pg_freespace('freespace_tab', -1);
+WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 ERROR:  invalid block number
 SELECT * FROM pg_freespace('freespace_tab', 4294967295);
+WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 ERROR:  invalid block number
 DROP TABLE freespace_tab;