sbase/sleep.c
Laslo Hunhold e92a1aef54 Handle { NULL } argv[] properly in manual arg-reduction
Thanks izabera for reporting this!
2017-08-05 23:50:39 +02:00

28 lines
403 B
C

/* See LICENSE file for copyright and license details. */
#include <unistd.h>
#include "util.h"
static void
usage(void)
{
eprintf("usage: %s num\n", argv0);
}
int
main(int argc, char *argv[])
{
unsigned seconds;
argv0 = *argv, argv0 ? (argc--, argv++) : (void *)0;
if (argc != 1)
usage();
seconds = estrtonum(argv[0], 0, UINT_MAX);
while ((seconds = sleep(seconds)) > 0)
;
return 0;
}