[LEAPSECS] Java: ThreeTen/JSR-310

[Warner Losh]

On 01/28/2011 11:34, Gerard Ashton wrote:

>

> Windows and Unix have general reputations of not doing it right; does 

> anyone know of a hardware/operating system combination that handles 

> leap seconds correctly? If so, does it have a defined approach to 

> providing a quasi-UTC that hides leap seconds to applications that 

> wish to live in blissful ignorance?


FreeBSD handles them correctly, within the bounds imposed by POSIX.  For 
the traditional interface, we repeat the last second of the day (since 
POSIX is silent/ambiguous on what the right behavior is during a leap 
second).  For the NTP interface, we publish the right bits of data so 
that people can know a leap second is happening, if they want.

Of course the phrase 'within the bounds imposed by POSIX' is a huge 
weasel phrase, sucking all the meaning out of the word correct for many 
people...

Warner