From: Etienne Dechamps <etienne@edechamps.fr>
Date: Sat, 12 Jul 2014 10:13:04 +0000 (+0100)
Subject: Don't initialize outpkt to an unused value.
X-Git-Tag: release-1.1pre11~70
X-Git-Url: https://git.tinc-vpn.org/git/browse?a=commitdiff_plain;h=127f2f99f3d43e0565782750f26f1d3980c72711;p=tinc

Don't initialize outpkt to an unused value.

in receive_udppacket(), we initialize outpkt to a default value but the
value is never read anywhere, as every read is preceded by a write.

This issue was found by the clang static analyzer tool:
http://clang-analyzer.llvm.org/
---

diff --git a/src/net_packet.c b/src/net_packet.c
index 609b4527..c8cd0ca7 100644
--- a/src/net_packet.c
+++ b/src/net_packet.c
@@ -360,7 +360,6 @@ static void receive_udppacket(node_t *n, vpn_packet_t *inpkt) {
 	vpn_packet_t pkt1, pkt2;
 	vpn_packet_t *pkt[] = { &pkt1, &pkt2, &pkt1, &pkt2 };
 	int nextpkt = 0;
-	vpn_packet_t *outpkt = pkt[0];
 	size_t outlen;
 
 	if(n->status.sptps) {
@@ -402,7 +401,7 @@ static void receive_udppacket(node_t *n, vpn_packet_t *inpkt) {
 	/* Decrypt the packet */
 
 	if(cipher_active(n->incipher)) {
-		outpkt = pkt[nextpkt++];
+		vpn_packet_t *outpkt = pkt[nextpkt++];
 		outlen = MAXSIZE;
 
 		if(!cipher_decrypt(n->incipher, &inpkt->seqno, inpkt->len, &outpkt->seqno, &outlen, true)) {
@@ -459,7 +458,7 @@ static void receive_udppacket(node_t *n, vpn_packet_t *inpkt) {
 	length_t origlen = inpkt->len;
 
 	if(n->incompression) {
-		outpkt = pkt[nextpkt++];
+		vpn_packet_t *outpkt = pkt[nextpkt++];
 
 		if((outpkt->len = uncompress_packet(outpkt->data, inpkt->data, inpkt->len, n->incompression)) < 0) {
 			logger(DEBUG_TRAFFIC, LOG_ERR, "Error while uncompressing packet from %s (%s)",