Paul G wrote:
warning: "tzdata2016b/europe", line 2425: time zone abbreviation differs from POSIX standard (+03)
Thanks for the heads-up; I put a note about this into the 2016b announcement, which just came out. The behavior you notice comes from the change noted in the 2016b NEWS file: As a trial of a new system that needs less information to be made up, the new zones use numeric time zone abbreviations like "+04" instead of invented abbreviations like "ASTT". As mentioned in the 2016b announcement, these new data entries in 2016b cause zic implementations derived from tz releases 2005j through 2015e to issue warnings like the above. These warnings should not otherwise affect zic's output and can safely be ignored on today's platforms, as the warnings refer to a restriction in POSIX.1-1988 that was removed in POSIX.1-2001. One way to suppress the warnings is to upgrade to zic derived from tz releases 2015f and later.