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Sync our copy of the timezone library with IANA release tzcode2019b.

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A large fraction of this diff is just due to upstream's somewhat
random decision to rename a bunch of internal variables and struct
fields.  However, there is an interesting new feature in zic:
it's grown a "-b slim" option that emits zone files without 32-bit
data and other backwards-compatibility hacks.  We should consider
whether we wish to enable that.
This commit is contained in:
Tom Lane
2019-07-17 18:26:23 -04:00
parent fec0778c80
commit f285322f9c
5 changed files with 306 additions and 268 deletions
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17
src/timezone/tzfile.h
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@@ -41,7 +41,7 @@ struct tzhead
char tzh_magic[4]; /* TZ_MAGIC */
char tzh_version[1]; /* '\0' or '2' or '3' as of 2013 */
char tzh_reserved[15]; /* reserved; must be zero */
char tzh_ttisgmtcnt[4]; /* coded number of trans. time flags */
char tzh_ttisutcnt[4]; /* coded number of trans. time flags */
char tzh_ttisstdcnt[4]; /* coded number of trans. time flags */
char tzh_leapcnt[4]; /* coded number of leap seconds */
char tzh_timecnt[4]; /* coded number of transition times */
@@ -64,14 +64,15 @@ struct tzhead
* one (char [4]) total correction after above
* tzh_ttisstdcnt (char)s indexed by type; if 1, transition
* time is standard time, if 0,
* transition time is wall clock time
* if absent, transition times are
* assumed to be wall clock time
* tzh_ttisgmtcnt (char)s indexed by type; if 1, transition
* time is UT, if 0,
* transition time is local time
* if absent, transition times are
* transition time is local (wall clock)
* time; if absent, transition times are
* assumed to be local time
* tzh_ttisutcnt (char)s indexed by type; if 1, transition
* time is UT, if 0, transition time is
* local time; if absent, transition
* times are assumed to be local time.
* When this is 1, the corresponding
* std/wall indicator must also be 1.
*/
/*