BUG #5131: The pgsql will lost

The following bug has been logged online:

Bug reference:      5131
Logged by:          aihongwei
Email address:      ufo008ahw@163.com
PostgreSQL version: 8.0.0
Operating system:   linux x86_64
Description:        The pgsql will lost
Details:

In x86_64 platform,
I input command "ulimit -s 2048" to limit the stack size.Then I startup the
server,and when i do some recursion operation, the pgsql will lost in some
time.
It seems that The stack_max_depth does work.

example:
CREATE FUNCTION infinite_recurse() returns int as
'select infinite_recurse()' language sql;
select infinite_recurse();