a11244e95e
If the current time is computed from extend string and the zone file contains multiple zones with the same name, the lookup by name might find incorrect zone. This happens for example with the slim Europe/Dublin time zone file in the embedded zip. This zone file has last transition in 1996 and rest is covered by extend string. tzset returns IST as the zone name to use, but there are two records with IST name. Lookup by name finds the wrong one. We need to check offset and isDST too. In case we can't find an existing zone, we allocate a new zone so that we use correct offset and isDST. I have renamed zone variable to zones as it shadowed the zone type that we need to allocate the cached zone. Fixes #45370 Change-Id: I79102e4873b6de20d8a65f8a3057519ff5fae608 Reviewed-on: https://go-review.googlesource.com/c/go/+/307190 Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com> Reviewed-by: Ian Lance Taylor <iant@golang.org> Trust: Emmanuel Odeke <emmanuel@orijtech.com> Run-TryBot: Emmanuel Odeke <emmanuel@orijtech.com> TryBot-Result: Go Bot <gobot@golang.org>
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