create schema v;
create table v.t1(
  a int,
  b int
);
create or replace function v.f1()
  returns void
  language plpgsql
as $$
declare r record;
begin
  for r in select * from v.t1
  loop
    raise notice '%', r.c; -- there is bug - table t1 missing "c" column
  end loop;
end;
$$;
select * from v.f1();
 f1 
----
 
(1 row)

-- use plpgsql_check_function to check the function for errors
select * from plpgsql_check_function('v.f1()');
             plpgsql_check_function              
-------------------------------------------------
 error:42703:6:RAISE:record "r" has no field "c"
 Context: SQL expression "r.c"
(2 rows)

drop schema v cascade;
NOTICE:  drop cascades to 2 other objects
DETAIL:  drop cascades to table v.t1
drop cascades to function v.f1()