Re: Y2K style bug for Linux

Am 09. May, 2005 schwätzte Gerald Thurman so:

> > I found this article surfing this morning and I'm interested on PLUGs
> > feedback.
> >
> Here is an old C program that demonstrates the problem.
> http://shell.deru.com/~gdt/c/code/Y2.038K.c
>
> Although not a Unix system problem, I was using the 'cal' command
> to test for leap years, but it doesn't handle 5-digit years.
> http://shell.deru.com/~gdt/shell/code/ly.txt
>
> Since it is FLOSS, I looked at cal.c to see what would be involved
> in changing it to work beyond year 9999, but the modification is
> non-trivial for me to design, implement, and test.

Looks like someone fixed it.

lufthans@LuftHans:~$ cal 12 9999
   Dezember 9999
So Mo Di Mi Do Fr Sa
          1  2  3  4
 5  6  7  8  9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30 31

lufthans@LuftHans:~$ cal 1 10000
    Januar 10000
So Mo Di Mi Do Fr Sa
                   1
 2  3  4  5  6  7  8
 9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
30 31

lufthans@LuftHans:~$ cal 2 10000
   Februar 10000
So Mo Di Mi Do Fr Sa
       1  2  3  4  5
 6  7  8  9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29

lufthans@LuftHans:~$ cal 2 10100
   Februar 10100
So Mo Di Mi Do Fr Sa
    1  2  3  4  5  6
 7  8  9 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28

lufthans@LuftHans:~$ cal 12 99999
   Dezember 99999
So Mo Di Mi Do Fr Sa
          1  2  3  4
 5  6  7  8  9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30 31

lufthans@LuftHans:~$ cal 1 100000
   Januar 100000
So Mo Di Mi Do Fr Sa
                   1
 2  3  4  5  6  7  8
 9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
30 31

Reemphesizes the point that applications are responsible for doing the
right thing.

ciao,

der.hans
-- 
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