Date: Fri, 6 Dec 2013 10:48:57 -0500 From: Rich Felker <dalias@...ifal.cx> To: musl@...ts.openwall.com Subject: Re: [PATCHv2] Add support for leap seconds in zoneinfo files On Fri, Dec 06, 2013 at 02:27:29PM +0100, Szabolcs Nagy wrote: > * Rich Felker <dalias@...ifal.cx> [2013-12-06 07:50:55 -0500]: > > On Fri, Dec 06, 2013 at 10:37:56AM +0000, Laurent Bercot wrote: > > > Yes, people using TAI-10 should also be using right/ timezones instead of > > > posix/ ones. That's why TZ as a test is appealing: it ensures consistency. > > > But at that level it's entirely the admin's responsibility to have > > > consistent configuration: leap-second-conscious admins won't mind doing > > > some extra work to have a setting that pleases them. > > > > The problem with this approach is that an individual user may unset > > $TZ or set it to a POSIX-syntax timezone such as "UTC" on a system > > where the system clock is using TAI-10. Users generally expect this to > > work, and their expectation is justified. Valid scripts might even use > > TZ=UTC as part of their functionality. > > this just means the tz data depends on the timescale used > > if an admin is willing to do the leapsecond hassle then > putting the "right" files into /usr/share/zoneinfo can > be done as well, TZ=UTC will work No, UTC is not a file. Since UTC matches the POSIX syntax for timezones it's required to be interpreted as a STD[off[DST[off]]] rather than as a filename. Rich
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