BUG #6046: select current_date crashes postgres

The following bug has been logged online:

Bug reference:      6046
Logged by:          Rikard Pavelic
Email address:      rikard.pavelic@zg.htnet.hr
PostgreSQL version: 9.1 beta 1
Operating system:   Windows 7 64bit
Description:        select current_date crashes postgres
Details:

select current_time
or select current_date

results in postgres crash.

select now()
works