If only given the -e/--extended option we would fail due to the assumption
that arg would contain the address to be parsed. Make sure we check for NULL
here instead of segfault.
Signed-off-by: Stefan Schmidt <stefan@xxxxxxxxxxxxxxx>
---
wpan-ping/wpan-ping.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/wpan-ping/wpan-ping.c b/wpan-ping/wpan-ping.c
index 9f01ae6..5429ca3 100644
--- a/wpan-ping/wpan-ping.c
+++ b/wpan-ping/wpan-ping.c
@@ -385,6 +385,9 @@ static int parse_dst_addr(struct config *conf, char *arg)
{
int i;
+ if (!arg)
+ return -1;
+
/* PAN ID is filled from netlink in get_interface_info */
conf->dst.family = AF_IEEE802154;
@@ -422,7 +425,7 @@ static int parse_dst_addr(struct config *conf, char *arg)
int main(int argc, char *argv[]) {
int c, ret;
struct config *conf;
- char *dst_addr;
+ char *dst_addr = NULL;
conf = malloc(sizeof(struct config));
--
2.4.3
--
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