Log Message:
-----------
Remove unportable assumption that it's okay to use the target buffer
of an sprintf() as a source string. Demonstrably does not work with
recent gcc and/or glibc on some platforms.
Modified Files:
--------------
pgsql/src/backend/utils/adt:
formatting.c (r1.83 -> r1.84)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/adt/formatting.c.diff?r1=1.83&r2=1.84)