There is a problem with epoch as well that was not in the 7.1.3
7.1.3# select extract(epoch from '00:00:34'::time), now();
7.1.3# 34 2002-03-05 22:13:16 +01
7.2# select extract(epoch from '00:00:34'::time), now();
7.2# 3634 2002-03-05 22:13:16 +01
7.2# select extract(epoch from '00:00:34'::time without time zone), now();
7.2# 3634 2002-03-05 22:13:16 +01
Is that a bug or I didn't understand the new date/time types ?