diff -U3 /tmp/cirrus-ci-build/src/test/regress/expected/jsonb.out /tmp/cirrus-ci-build/src/bin/pg_upgrade/tmp_check/results/jsonb.out
--- /tmp/cirrus-ci-build/src/test/regress/expected/jsonb.out	2026-04-27 05:36:24.647906041 +0000
+++ /tmp/cirrus-ci-build/src/bin/pg_upgrade/tmp_check/results/jsonb.out	2026-04-27 05:44:39.174473817 +0000
@@ -1714,7 +1714,7 @@
 
 -- Section T4: silent semantics
 SELECT (jsonb_path_query_first_tz('{"a":"text"}'::jsonb, '$.a', '{}', true))::int4;  -- cast error not suppressed
-ERROR:  cannot cast jsonb string to type integer
+ERROR:  unknown jsonb type: 442280
 SELECT (jsonb_path_query_first_tz('{"a":1}'::jsonb, 'strict $.b', '{}', false))::int4;  -- strict error
 ERROR:  JSON object does not contain key "b"
 SELECT (jsonb_path_query_first_tz('{"a":1}'::jsonb, 'strict $.b', '{}', true))::int4;  -- suppressed, NULL
@@ -1725,7 +1725,7 @@
 
 -- Section T5: type-mismatch errors
 SELECT (jsonb_path_query_first_tz('{"a":"hello"}'::jsonb, '$.a'))::int4;
-ERROR:  cannot cast jsonb string to type integer
+ERROR:  unknown jsonb type: 442280
 -- Section T6: direct calls to typed extractor builtins
 SELECT jsonb_path_query_first_tz_int4('{"a":42}'::jsonb, '$.a'::jsonpath, '{}'::jsonb, false);
  jsonb_path_query_first_tz_int4