[tz] Etc/GMT+nn and Etc/GMT-nn not working since zic 2021d

Ian Abbott abbotti at mev.co.uk
Tue Mar 22 16:39:53 UTC 2022

On 22/03/2022 16:23, Paul Eggert wrote:
> On 3/22/22 09:00, Ian Abbott via tz wrote:
>> I guess this bug would affect all timezones that have no transitions?
> More generally, the bug occurs if you use 'zic -r @T' with a timezone 
> that lacks transitions before T. This means the truncated TZif file will 
> be larger than an untruncated TZif file would be, because the truncated 
> file needs to record the truncation timestamp in addition to all the 
> other stuff. I'll look into patching the bug.

Perhaps the low/high cutoff points could be rounded down/up to actual 
transition points (if they exist) or beginning/end of representable 
time?  That might put more leap second transitions in the zone though.

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