diff -U3 /tmp/cirrus-ci-build/src/test/modules/unsafe_tests/expected/guc_privs.out /tmp/cirrus-ci-build/src/test/modules/unsafe_tests/results/guc_privs.out
--- /tmp/cirrus-ci-build/src/test/modules/unsafe_tests/expected/guc_privs.out	2026-05-01 11:16:21.822917968 +0000
+++ /tmp/cirrus-ci-build/src/test/modules/unsafe_tests/results/guc_privs.out	2026-05-01 11:23:54.790067700 +0000
@@ -590,8 +590,7 @@
 -- Cannot set synchronized_standby_slots to an invalid slot name
 ALTER SYSTEM SET synchronized_standby_slots='invalid*';
 ERROR:  invalid value for parameter "synchronized_standby_slots": "invalid*"
-DETAIL:  replication slot name "invalid*" contains invalid character
-HINT:  Replication slot names may only contain lower case letters, numbers, and the underscore character.
+DETAIL:  syntax error at or near "*"
 -- Can set synchronized_standby_slots to a non-existent slot name
 ALTER SYSTEM SET synchronized_standby_slots='missing';
 -- Reset the GUC