Re: [bug #21455] date --date "" "+test" fails ONLY WITHIN CERTAIN TIME PERIOD #$%^%

[Philip Rowlands]

On Tue, 30 Oct 2007, Jim Meyering wrote:

> I'm hardly the authority on such TZ things, but would have thought the 
> invalid zones are those two intervals (one per line), which are 
> nominally two and one hours long.  It looks like they're two different 
> views of the same two-real-hour interval.  The first uses the DST 
> (isdst=1) times, and the second non-DST times.
>
> Date's -d option interprets an empty string just like "0", which is 
> interpreted as 00:00 in the current day.

Ah, that makes the problem easier to present:

$ export TZ=Europe/Paris
$ export LD_PRELOAD=./clock_gettime.so
$ FAKETIME=1193533200 date -d ""
date: invalid date `'
$ FAKETIME=1193533200 date -d "0"
Sun Oct 28 00:00:00 CEST 2007

-d "" and -d "0" are not equivalent in this case.


Cheers,
Phil