The particular table names used in the new inheritance regression test are

prone to sort differently in different locales, as seen in buildfarm results.
Let's cast to name not text to avoid that.

src/test/regress/expected/inherit.out

@@ -1124,7 +1124,7 @@ SELECT a.attrelid::regclass, a.attname, a.attinhcount, e.expected
   FROM (SELECT inhrelid, count(*) AS expected FROM pg_inherits
         WHERE inhparent IN (SELECT inhrelid FROM r) GROUP BY inhrelid) e
   JOIN pg_attribute a ON e.inhrelid = a.attrelid WHERE NOT attislocal
-  ORDER BY a.attrelid::regclass::text, a.attnum;
+  ORDER BY a.attrelid::regclass::name, a.attnum;
  attrelid | attname | attinhcount | expected 
 ----------+---------+-------------+----------
  t2       | aaaa    |           1 |        1

src/test/regress/sql/inherit.sql

@@ -370,6 +370,6 @@ SELECT a.attrelid::regclass, a.attname, a.attinhcount, e.expected
   FROM (SELECT inhrelid, count(*) AS expected FROM pg_inherits
         WHERE inhparent IN (SELECT inhrelid FROM r) GROUP BY inhrelid) e
   JOIN pg_attribute a ON e.inhrelid = a.attrelid WHERE NOT attislocal
-  ORDER BY a.attrelid::regclass::text, a.attnum;
+  ORDER BY a.attrelid::regclass::name, a.attnum;
 
 DROP TABLE t1, s1 CASCADE;