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Fix bogus logic for zic -P option.

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The quick hack I added to zic to dump out currently-in-use timezone
abbreviations turns out to have a nasty bug: within each zone, it was
printing the last "struct ttinfo" to be *defined*, not necessarily the
last one in use.  This was mainly a problem in zones that had changed the
meaning of their zone abbreviation (to another GMT offset value) and later
changed it back.

As a result of this error, we'd missed out updating the tznames/ files
for some jurisdictions that have changed their zone abbreviations since
the tznames/ files were originally created.  I'll address the missing data
updates in a separate commit.
This commit is contained in:
Tom Lane 2014-10-03 14:48:11 -04:00
parent 67ed9d5313
commit 909e48dddc
1 changed files with 18 additions and 15 deletions
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33
src/timezone/zic.c
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@ -1770,7 +1770,25 @@ writezone(const char *name, const char *string)
if (pass == 1)
puttzcode((long) ats[i], fp);
else
{
puttzcode64(ats[i], fp);
/* Print current timezone abbreviations if requested */
if (print_abbrevs &&
(ats[i] >= print_cutoff || i == thistimelim - 1))
{
unsigned char tm = typemap[types[i]];
char *thisabbrev = &thischars[indmap[abbrinds[tm]]];
/* filter out assorted junk entries */
if (strcmp(thisabbrev, GRANDPARENTED) != 0 &&
strcmp(thisabbrev, "zzz") != 0)
fprintf(stdout, "%s\t%ld%s\n",
thisabbrev,
gmtoffs[tm],
isdsts[tm] ? "\tD" : "");
}
}
for (i = thistimei; i < thistimelim; ++i)
{
unsigned char uc;
@ -1787,21 +1805,6 @@ writezone(const char *name, const char *string)
puttzcode(gmtoffs[i], fp);
(void) putc(isdsts[i], fp);
(void) putc((unsigned char) indmap[abbrinds[i]], fp);
/* Print current timezone abbreviations if requested */
if (print_abbrevs && pass == 2 &&
(ats[i] >= print_cutoff || i == typecnt - 1))
{
char *thisabbrev = &thischars[indmap[abbrinds[i]]];
/* filter out assorted junk entries */
if (strcmp(thisabbrev, GRANDPARENTED) != 0 &&
strcmp(thisabbrev, "zzz") != 0)
fprintf(stdout, "%s\t%ld%s\n",
thisabbrev,
gmtoffs[i],
isdsts[i] ? "\tD" : "");
}
}
if (thischarcnt != 0)
(void) fwrite((void *) thischars,