pika failing since the per-column collation patch

Hi,

Since the per-column collation patch went in, pika (NetBSD 5.1/mips) started failing consistently with this diff:

*** /home/pgbuildfarm/workdir/HEAD/pgsql.15101/src/test/regress/expected/polymorphism.out Sat Feb 12 02:16:07 2011
--- /home/pgbuildfarm/workdir/HEAD/pgsql.15101/src/test/regress/results/polymorphism.out Sat Feb 12 09:10:21 2011
***************
*** 624,630 ****

-- such functions must protect themselves if varying element type isn't OK
select max(histogram_bounds) from pg_stats;
! ERROR: cannot compare arrays of different element types
-- test variadic polymorphic functions
create function myleast(variadic anyarray) returns anyelement as $$
select min($1[i]) from generate_subscripts($1,1) g(i)
--- 624,630 ----

-- such functions must protect themselves if varying element type isn't OK
select max(histogram_bounds) from pg_stats;
! ERROR: locale operation to be invoked, but no collation was derived
-- test variadic polymorphic functions
create function myleast(variadic anyarray) returns anyelement as $$
select min($1[i]) from generate_subscripts($1,1) g(i)

Is there something I can do to help investigate this ?

Regards,

Rémi Zara