Re: Postgres 13 signal 11: Segmentation fault tested on 2 independent machines

Oh, here's a simpler reproducer:

create or replace function foo (out schemaname text, out relname text)
returns setof record language sql
as $$
  select nspname, relname from pg_class c join pg_namespace n
  on (n.oid = relnamespace)
  order by 1
$$;

select * from foo();

It doesn't fail without the ORDER BY, suggesting that the problem
is localized in failing to handle the case where a sort key
column needs to be coerced.

            regards, tom lane