[tz] question regarding 'timezone' variable
christos at zoulas.com
Wed Sep 2 06:13:35 UTC 2015
On Sep 1, 11:02pm, eggert at cs.ucla.edu (Paul Eggert) wrote:
-- Subject: Re: [tz] question regarding 'timezone' variable
| Christos Zoulas wrote:
| > pt = _add(tzname[t->tm_isdst != 0],
| > ...
| > How do you access tzname which is a global making sure that it does not
| > change under you by another thread?
| You don't. The code involving tzname isn't used on a system that has a working
| tm_zone member. Any system desiring thread-safety should have a struct tm with
| both tm_zone and tm_gmtoff members, as NetBSD does.
Okay, but we should fix the NULL cases in strptime() then so that TM_ZONE
is never NULL?
if (t->TM_ZONE != NULL)
pt = _add(t->TM_ZONE, pt, ptlim);
#endif /* defined TM_ZONE */
if (t->tm_isdst >= 0)
pt = _add(tzname[t->tm_isdst != 0],
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