diff -U3 /tmp/cirrus-ci-build/src/test/regress/expected/misc.out /tmp/cirrus-ci-build/src/test/regress/results/misc.out
--- /tmp/cirrus-ci-build/src/test/regress/expected/misc.out	2026-01-14 03:57:17.852500271 +0000
+++ /tmp/cirrus-ci-build/src/test/regress/results/misc.out	2026-01-14 04:03:31.234485397 +0000
@@ -510,8 +510,12 @@
 
 create index s1 on tcast(cast(col1 as date format 'YYYY-MM-DD')); --error
 ERROR:  functions in index expression must be marked IMMUTABLE
+LINE 1: create index s1 on tcast(cast(col1 as date format 'YYYY-MM-D...
+                                 ^
 create index s1 on tcast(cast(col1 as date format stable_const())); --error
 ERROR:  functions in index expression must be marked IMMUTABLE
+LINE 1: create index s1 on tcast(cast(col1 as date format stable_con...
+                                 ^
 create view tcast_v1 as select cast(col1 as date format 'YYYY-MM-DD') from tcast;
 select pg_get_viewdef('tcast_v1', false);
                       pg_get_viewdef