From: J William Piggott <elseifthen@gmx.com>
Date: Tue, 18 Apr 2017 14:42:02 +0000 (-0400)
Subject: hwclock: --set and --predict segmentation fault
X-Git-Tag: v2.30-rc1~93^2~2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=969bffb748feea71690193ba6c6405e36a22af9b;p=thirdparty%2Futil-linux.git

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 0c587957d5..bb3a9d8970 100644
--- 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 {