network: silence false warning about unitialized variable

[1177/3647] Compiling C object systemd-networkd.p/src_network_networkd-bridge-vlan.c.o
In function ‘bridge_vlan_append_set_info’,
    inlined from ‘bridge_vlan_set_message’ at ../src/network/networkd-bridge-vlan.c:257:21:
../src/network/networkd-bridge-vlan.c:162:28: warning: ‘untagged’ may be used uninitialized [-Wmaybe-uninitialized]
  162 |                         if (untagged == u)
      |                            ^
../src/network/networkd-bridge-vlan.c: In function ‘bridge_vlan_set_message’:
../src/network/networkd-bridge-vlan.c:111:14: note: ‘untagged’ was declared here
  111 |         bool untagged, pvid_is_untagged;
      |              ^~~~~~~~

diff --git a/src/network/networkd-bridge-vlan.c b/src/network/networkd-bridge-vlan.c
index 9701811876eb2f647e6c346d8668f1e695563315..ed1aa5e1df5c769a4400b7bd0570742852fae50a 100644 (file)
--- a/src/network/networkd-bridge-vlan.c
+++ b/src/network/networkd-bridge-vlan.c
@@ -108,7 +108,8 @@ static uint16_t link_get_pvid(Link *link, bool *ret_untagged) {
 static int bridge_vlan_append_set_info(Link *link, sd_netlink_message *m) {
         _cleanup_free_ char *str = NULL;
         uint16_t pvid, begin = UINT16_MAX;
-        bool untagged, pvid_is_untagged;
+        bool pvid_is_untagged, untagged = false;  /* <untagged> is always set togather with <begin>.
+                                                   * Initialize to appease gcc. */
         int r;
 
         assert(link);