Cannot dump 8.4.8 database using later versions

Severity: normal

Versions tested: 9.0.4 and 9.1.1
    Installed from packages on Ubuntu

Reproduceability: 100% on this server
    have not tried a test case yet

Steps:

1. large running 8.4.8 PostgreSQL database

2. /usr/lib/postgresql/9.1/bin/pg_dump -Fc -v -f test.dump dbname

3. dumps all table etc definitions correctly.  then:

pg_dump: saving database definition
pg_dump: SQL command failed
pg_dump: Error message from server: ERROR:  NEW used in query that is
not in a rule
LINE 1: ...END AS min_value, cache_value, is_cycled, is_called from new
                                                                    ^
pg_dump: The command was: SELECT sequence_name, start_value, last_value,
increment_by, CASE WHEN increment_by > 0 AND max_value =
9223372036854775807 THEN NULL      WHEN increment_by < 0 AND max_value =
-1 THEN NULL      ELSE max_value END AS max_value, CASE WHEN
increment_by > 0 AND min_value = 1 THEN NULL      WHEN increment_by < 0
AND min_value = -9223372036854775807 THEN NULL      ELSE min_value END
AS min_value, cache_value, is_cycled, is_called from new

(yes, that is the entire query, I checked the logs)

... somehow the query to dump the sequences is getting mangled.  Any
clue how?

--
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com