Bug#417815: libc6: localtime dies with : tzfile.c:544: __tzfile_compute: Assertion `num_types == 1' failed

[sven@powerlinux.fr (Sven Luther)]

On Thu, Apr 05, 2007 at 12:00:01AM +0100, Stephen Gran wrote:
> This one time, at band camp, Sven Luther said:
> > And indeed, like i said, it worked fine 100s of times, and then died. Try :
> > 
> > int main (void) {
> >   struct tm tm;
> >   time_t t;
> >   while (1) {
> >     t = time(NULL);
> >     localtime_r (&t, &tm);
> >   }
> >   exit(0);
> > }
> 
> steve@gashuffer:~$ cat t.c
> #include <time.h>
> #include <stdlib.h>
> 
> int main (void) {
>   struct tm tm;
>   time_t t;
>   while (1) {
>     t = time(NULL);
>     localtime_r (&t, &tm);
>   }
>   exit(0);
> }
> 
> steve@gashuffer:~$ gcc -Wall t.c
> steve@gashuffer:~$ time LC_ALL=fr_FR.utf8  ./a.out
> real    1m21.381s
> user    1m1.716s
> sys     0m18.985s
> 
> No crash.  This is x86, but ppc is the same.

As said, i see this on both an x86 box and my powerbook, but the complete code
is more involved, having a pselect, as well as a SIGALRM handler, which both
trigger the localtime_r, as well as a postgresql access and files access.

I will try to provide a minimal program which exhibits the problem, but i
needed a quick solution today, since the work goes into pre-production testing
today.

Friendly,

Sven Luther