From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Tue, 31 Jul 2018 16:15:23 +0000 (+0900)
Subject: network: make compare functions safe
X-Git-Tag: v240~870^2~1
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=ca52812a942841b26e41a58a8f2248cd65e62128;p=thirdparty%2Fsystemd.git

network: make compare functions safe

As the variable 'line' is unsigned.
---

diff --git a/src/network/networkd-network.c b/src/network/networkd-network.c
index 429aac5e6c8..1f1cdced8f1 100644
--- a/src/network/networkd-network.c
+++ b/src/network/networkd-network.c
@@ -36,7 +36,12 @@ static int network_config_compare_func(const void *a, const void *b) {
         if (r != 0)
                 return r;
 
-        return y->line - x->line;
+        if (x->line < y->line)
+                return -1;
+        if (x->line > y->line)
+                return 1;
+
+        return 0;
 }
 
 const struct hash_ops network_config_hash_ops = {