Re: Trying to use AUTHOR_DATE

From: Krzysztof Halasa <khc@pm.waw.pl>
Date: May 2, 2005, 22:10 UTC
Message-ID: <m3wtqhe0t6.fsf@defiant.localdomain>
In-Reply-To: <1114865964.24014.77.camel@localhost.localdomain>

David Woodhouse <dwmw2@infradead.org> writes:

> During a leap second, won't tm_sec be 60?

You could rather have two 59th seconds. Or the "seconds" could be, say, 0.1% longer for 1000 s. Depends on synchronization mechanism.

I think 60th second could only be possible with leap-seconds aware things (NTP, GPS, reference radio clocks etc.).

> And in fact you don't seem to
> handle leap seconds at all, so isn't my_mktime going to be out by one
> second for every leap second which has occurred since 1970?

No, actually the system time (i.e., the number of seconds since 1970) is already corrected (minutes are seconds/60, hrs = minutes/60 etc.) You are off calculating time deltas, but I guess if you need such accuracy your software already knows about leap seconds.

-- 
Krzysztof Halasa