I may have missed 1.4:
PostgreSQL 7.5devel on arm-unknown-netbsdelf1.6ZE, compiled by GCC gcc (GCC) 3.3.2-nb1
but all tests work there. I didn't manage to compile bison 1.875 under
NetBSD-1.6P/acorn32, as gcc 2.95.3 really didn't like it. Upgrading to
NetBSD-1.6ZE/acorn32 upgraded to gcc 3.3.2, so let me build the bison.
(bison 1.75 was fine for both) This doesn't say anything about postgresql
though, and I'm guessing that postgresql itself would be fine with the
older NetBSD/acorn32...
Cheers,
Patrick