[tz] 回复: 回复: zoneinfo generating issues

汪蒙蒙(木之) wangmm at tuya.com
Fri Mar 5 10:01:09 UTC 2021

Sorry, I made a mistake and the actual diff result is,
zone    local time      by 2020d  utc time      by 2021a utc time
America/Adak    2022-11-01 00:00:00     2022-11-01 09:00:00     2022-11-01 10:00:00
America/Anchorage       2022-11-01 00:00:00     2022-11-01 08:00:00     2022-11-01 09:00:00
America/Asuncion        2022-10-01 00:00:00     2022-10-01 04:00:00     2022-10-01 03:00:00
America/Atka    2022-11-01 00:00:00     2022-11-01 09:00:00     2022-11-01 10:00:00

but the problem still exists. I have put my analysis tool and its code in the docker image, "damon0708/zic:v0.3". The tool is writen in golang and easy to be used.
# ./main -h
  -l string
    local time need to transfer (default "2022-11-01 00:00:00")
  -path string
    used to parse timezone (default "/usr/share/zoneinfo")
  -tz string
    the timezone you want transfer (default "America/Adak")

After making the zoneinfo in path "/app/zoneinfo",

# ./main -l "2022-11-01 00:00:00" -path "/usr/share/zoneinfo" -tz "America/Adak"
UTC: 2022-11-01 09:00:00 +0000 UTC
# ./main -l "2022-11-01 00:00:00" -path "/app/zoneinfo" -tz "America/Adak"
UTC: 2022-11-01 10:00:00 +0000 UTC

The tool uses the golang standard library "time", which can be  specified the zoneinfo path by the env "ZONEINFO". So I don't think it is the problem of the tool.

发件人: Paul Eggert <eggert at cs.ucla.edu>
发送时间: 2021年3月4日 17:13
收件人: 汪蒙蒙(木之) <wangmm at tuya.com>
抄送: Time zone mailing list <tz at iana.org>
主题: Re: 回复: [tz] zoneinfo generating issues

On 3/3/21 11:03 PM, 汪蒙蒙(木之) wrote:
> the check showed no diff in America/Adak America/Anchorage
> America/Asuncion America/Atka

In that case I don't see how the tzdb distribution (either code or data)
can be the problem here. If I understand things correctly, you say it's
producing TZif files like America/Adak that are identical to those of
previous releases, but that your analysis tool is behaves differently on
those two identical TZif files. I expect you'll have to look into the
problem on your end.
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