7.2b Timestamp

Has some thing changed with the timestamp function since 7.0

7.0
create table t (i int);
insert into t values(1);
select  timestamp(date '1998-02-24', time '23:07') from t;
        timestamp
------------------------
  1998-02-24 23:07:00-05
(1 row)


7.2 b
create table t (i int);
insert into t values(1);
select  timestamp(date '1998-02-24', time '23:07') from t;
ERROR:  parser: parse error at or near "date"


I'm asuming it changed in 7.2 because the 7.1 docs show the usage the
same as 7.0 (or the docs are wrong ;-) )