In article <86bs11esag.wl%knu / iDaemons.org>,
  "Akinori MUSHA" <knu / iDaemons.org> writes:

> What did you really mean by "timezone" here?  I'm sure you didn't mean
> char *timezone() of libc only to make gcc 3.2.2 mad as shown above. :)
>
> Any ideas?

Call Time.utc, using rb_funcall.  Because mktime(&tm) - timezone may
have problem with daylight savings.

Note that, in SUSv3, timezone is described in XSI section.  I.e. it is
not POSIX but X/Open System Interface.
-- 
Tanaka Akira