Regression test errors on x86_64

["Michael Artz" <mlartz(at)gmail(dot)com>]

I'm sure that I'm doing something wrong, but are there any special
flags that I need to pass to configure/make in order to make sure that
everything builds correctly on an AMD64 machine (Quad dual-core
Opteron)?  Everything seems to builds fine, however I fail 71 of
the regression tests.  Looking at the results it looks like it,
many times when the regresssion test expects and error, my compile
doesn't throw one.  It happily accepted 'xxx' as a bool and 'abc'
as a char ... is this a known "problem" for x86_64?

Sorry for being so vague, but I don't have the output in front of me
(its at work).  What information would be most useful in
diagnosing the problems? (RHEL4 Update 2, PostgreSQL 8.1.3, only
options to ./configure are --with-*).

Thanks
-Mike