Problem with regression tests (abstime test not Y2K compliant?)

configure option: just used --prefix

Failed regression tests:
float8 .. failed
geometry .. failed
abstime .. failed

float8:
Don't get pow() and exp() out of range errors but get results instead.

geometry:
Quite a number of failures.

abstime:
SELECT '' AS four, ABSTIME_TBL.*
  WHERE ABSTIME_TBL.f1 <?>
   '["Apr 1 1950 00:00:00" "Dec 30 1999 23:00:00"]'::tinterval;
Expected:
four|f1
----+----------------------------
    |Sun Jan 14 03:14:21 1973 PST
    |Mon May 01 00:30:30 1995 PDT
    |epoch
    |current
(4 rows)

But naturally current is not < Dec 30 1999 so does not appear in actual.

Best regards,

Link.