PostgreSQL on Solaris: Changing Compilers During Point Upgrade

I'm working on a system where postgres 8.2.1 was built from source on
Solaris 10 using gcc. Based on a number of recommendations, we
decided to rebuild postgres Sun Studio cc. Without changing
platforms, I wouldn't've expected the compiler to make a difference,
but we just built 8.2.2 from source using cc, and now we're seeing
this type of error in the logs:

ERROR: attribute 3 has wrong type
DETAIL: Table has type character varying, but query expects
character varying.

Is changing compilers under postgres on the same platform without a
dump/reload a Bad Idea?

More important: Has this risked any catastrophic data corruption? If
we just switch to a gcc 8.2.2, will we be fine?

--
Thomas F. O'Connell

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