From be6a01f2e038f39c85f813793f41c17fef3e578e Mon Sep 17 00:00:00 2001
From: Daniel Friesel <derf@derf.homelinux.org>
Date: Sat, 8 Aug 2009 15:58:39 +0200
Subject: Check argc

---
 src/host.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/host.c b/src/host.c
index 62e0eff..1da33b7 100644
--- a/src/host.c
+++ b/src/host.c
@@ -36,8 +36,11 @@ int main(int argc, char **argv) {
 	char hostname[NI_MAXHOST];
 	char ip_address[INET6_ADDRSTRLEN];
 	int ret;
-	struct in_addr addr;
-	void *ptr;
+
+	if (argc < 2) {
+		fprintf(stderr, "Usage: %s <hostname>\n", argv[0]);
+		return EXIT_FAILURE;
+	}
 
 	ret = getaddrinfo(argv[1], NULL, &hints, &result);
 	if (ret != 0) {
-- 
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