hwclock: --set and --predict segmentation fault

Segmentation fault for --set or --predict when the
--date option is not included.

* sys-utils/hwclock.c: exit with an error message when
    the required --date option is missing.

Signed-off-by: J William Piggott <elseifthen@gmx.com>

diff --git a/sys-utils/hwclock.c b/sys-utils/hwclock.c
index 0c587957d5f6305430a1e76079bf519483c0668f..bb3a9d8970ae15b36d57ae2b09dd29d0fdd77bab 100644 (file)
--- a/sys-utils/hwclock.c
+++ b/sys-utils/hwclock.c
@@ -1505,6 +1505,10 @@ int main(int argc, char **argv)
        }
 
        if (ctl.set || ctl.predict) {
+               if (!ctl.date_opt){
+               warnx(_("--date is required for --set or --predict"));
+               hwclock_exit(&ctl, EX_USAGE);
+               }
                if (parse_date(&when, ctl.date_opt, NULL))
                        set_time = when.tv_sec;
                else {