Plpython bug with int8?

Can someone else run this and confirm the results against the tip
of the CVS repository?

I'm trying to trace this bug (help welcome too).

(it was hidden in a trigger and a pain to narrow to this point)
-Brad

-----

drop function mul1(int4,int4);
drop function mul2(int4,int4);
drop function callmul1();
drop function callmul2a();
drop function callmul2b();
create function mul1(int4,int4) returns int8 as 'select int8($1) * int8($2)' language 'sql';
create function mul2(int4,int4) returns int8 as 'select int8($1) * 4294967296::int8 + int8($2)' language 'sql';
create function callmul1() returns int8 as 'return plpy.execute("select mul1(6,7) as x")[0]["x"]' language 'plpython';
create function callmul2a() returns int8 as 'select mul2(7,8)' language 'sql';
create function callmul2b() returns int8 as 'return plpy.execute("select mul2(7,8) as x")[0]["x"]' language 'plpython';
select mul1(3,4);
select callmul1();
select mul2(5,6);
select callmul2a();
select callmul2b();

Results:

...
callmul1
----------
42
(1 row)

mul2
-------------
21474836486
(1 row)

callmul2a
-------------
30064771080
(1 row)

psql:bug:14: pqReadData() -- backend closed the channel unexpectedly.
This probably means the backend terminated abnormally
before or while processing the request.
psql:bug:14: connection to server was lost