BUG #3624: EXTRACT(QUARTER FROM INTERVAL) always returns 1

The following bug has been logged online:

Bug reference:      3624
Logged by:          Eugene M. Hutorny
Email address:      eugene@ksf.kiev.ua
PostgreSQL version: 8.2.4
Operating system:   freebsd6.2
Description:        EXTRACT(QUARTER FROM INTERVAL) always returns 1
Details:

Tested on PostgreSQL Versions:
PostgreSQL 8.2.4 on i386-portbld-freebsd6.2, compiled by GCC cc (GCC) 3.4.6
[FreeBSD] 20060305
PostgreSQL 8.2.4 on i686-pc-mingw32, compiled by GCC gcc.exe (GCC) 3.4.2
(mingw-special)

SQL statemet
SELECT EXTRACT(QUARTER FROM INTERVAL '1 day');

Returns: 1
Expected: 0
      Or: ERROR: interval units "quarter" not supported