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53823b9f1c
The existing implementation of getting leap second information from a timezone in get_tz_leap() relies on non-portable C library behaviour. Specifically, mktime is not required to return '60' in the tm_sec field when a leap second is inserted leading to "Timezone right/UTC failed leap second check, ignoring" errors on musl based systems. This patch adds support for getting leap second information from the leap-seconds.list file included with tzdata and adds a new configuration directive leapseclist to switch on the feature.