[LEAPSECS] php breaks if UTC has no leap seconds?

Warner Losh imp at bsdimp.com
Thu Dec 9 20:31:40 EST 2010


On 12/09/2010 18:30, Warner Losh wrote:

> On 12/09/2010 17:35, Rob Seaman wrote:

>> On Dec 9, 2010, at 3:53 PM, Steve Allen wrote:

>>

>>> This is the first example I've come across where a widely used API

>>> will break if UTC does not continue to have leap seconds.

>> Has anyone even considered a Y2K style inventory?

>>

>> Absence of evidence is not...oh, what's the point?

> Everybody said y2k was going to break everything. In the end, it was

> a non-event :) Apples are much redder than oranges, but that might

> not be a valid comparison.

>

> We know the class of APIs that UTC is going to introduce errors into

> will be. Astronomical events like these will degrade in accuracy over

> time, unless DUT1 is also passed in. Technically, it needs to be

> passed in now, but the error is only second or so without it, so

> nobody cares today. But the correction could easily be subtracted as

> DUT1 grows...

>

> In fact, php could query what DUT1 is and make the corrections w/o any c

stupid mouse...

In fact, php could query what DUT1 is and make the corrections w/o any
changes to the program API.

Warner

>

> Warner




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