What about 64-bit systems?
All personal computers will likely to be 64-bit by the
But many embedded systems may still be 32-bit or less.
Note that the large majority of embedded systems today are
still 8 or 16-bit. These could include microwave
ovens, wrist-watches, elevators, gas-station pumps, car fuel
injection computers, radios etc.
There are orders of magnitudes more small embedded systems
in the world than there are desktop computers.
Also, application software running on 64-bit systems
may not use the POSIX time_t type correctly. For
instance, a C programmer may inadvertently cast
time_t to 32-bits during a time calculation; or
implicitly knock off the top 32 bits of a 64-bit time
while storing or retrieving the time.
For authoritative information on the Unix 64-bit
For authoritative information on the year-2038-bug
by the same site, visit:
(I.e. they don't say much.)