Log Message:
-----------
Fix insufficient check for overflow in tm2abstime(), per report from jw.
Modified Files:
--------------
pgsql/src/backend/utils/adt:
nabstime.c (r1.140 -> r1.141)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/nabstime.c.diff?r1=1.140&r2=1.141)
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TIP 9: In versions below 8.0, the planner will ignore your desire to
choose an index scan if your joining column's datatypes do not
match
