From: Michael Tremer <michael.tremer@ipfire.org>
Date: Tue, 30 Jan 2018 15:16:15 +0000 (+0000)
Subject: network: Fix underflow in for loop when generating bitmask
X-Git-Tag: 0.9.0~92
X-Git-Url: http://git.ipfire.org/?p=people%2Fms%2Flibloc.git;a=commitdiff_plain;h=364a2a37c7fae58045ac392a1f8015e16dcf1c40

network: Fix underflow in for loop when generating bitmask

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---

diff --git a/src/network.c b/src/network.c
index 592ec73..4f29714 100644
--- a/src/network.c
+++ b/src/network.c
@@ -59,7 +59,7 @@ static struct in6_addr prefix_to_bitmask(unsigned int prefix) {
 	for (unsigned int i = 0; i < 16; i++)
 		bitmask.s6_addr[i] = 0;
 
-	for (unsigned int i = prefix, j = 0; i > 0; i -= 8, j++) {
+	for (int i = prefix, j = 0; i > 0; i -= 8, j++) {
 		if (i >= 8)
 			bitmask.s6_addr[j] = 0xff;
 		else