diff -U3 /tmp/cirrus-ci-build/src/test/modules/spgist_name_ops/expected/spgist_name_ops.out /tmp/cirrus-ci-build/build/testrun/spgist_name_ops/regress/results/spgist_name_ops.out
--- /tmp/cirrus-ci-build/src/test/modules/spgist_name_ops/expected/spgist_name_ops.out	2024-03-19 13:35:14.042892000 +0000
+++ /tmp/cirrus-ci-build/build/testrun/spgist_name_ops/regress/results/spgist_name_ops.out	2024-03-19 13:53:29.812261000 +0000
@@ -2,6 +2,7 @@
 select opcname, amvalidate(opc.oid)
 from pg_opclass opc join pg_am am on am.oid = opcmethod
 where amname = 'spgist' and opcname = 'name_ops';
+WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
  opcname  | amvalidate 
 ----------+------------
  name_ops | t
@@ -11,6 +12,7 @@
 select opcname, amvalidate(opc.oid)
 from pg_opclass opc join pg_am am on am.oid = opcmethod
 where amname = 'spgist' and opcname = 'name_ops_old';
+WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 INFO:  SP-GiST leaf data type text does not match declared type name
    opcname    | amvalidate 
 --------------+------------
@@ -20,6 +22,8 @@
 create table t(f1 name, f2 integer, f3 text);
 create index on t using spgist(f1) include(f2, f3);
 \d+ t_f1_f2_f3_idx
+WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
+WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
                  Index "public.t_f1_f2_f3_idx"
  Column |  Type   | Key? | Definition | Storage  | Stats target 
 --------+---------+------+------------+----------+--------------
@@ -32,6 +36,7 @@
   proname,
   case when length(proname) % 2 = 0 then pronargs else null end,
   prosrc from pg_proc;
+WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
 vacuum analyze t;
 explain (costs off)
 select * from t
@@ -74,6 +79,8 @@
 drop index t_f1_f2_f3_idx;
 create index on t using spgist(f1 name_ops_old) include(f2, f3);
 \d+ t_f1_f2_f3_idx
+WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
+WARNING:  outfuncs/readfuncs failed to produce an equal rewritten parse tree
                  Index "public.t_f1_f2_f3_idx"
  Column |  Type   | Key? | Definition | Storage  | Stats target 
 --------+---------+------+------------+----------+--------------