X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=lib%2Fdpif-netdev.c;h=d8f5ba73c5d0b030ed227e19a6a76f9815c02a6a;hb=be2c418b73fc;hp=4ff1a425f227aa8946f6dea93b5c7a5ac9c6430e;hpb=00908dc27a4d93bd1c5bda3bcdc84ec351e9a09a;p=openvswitch

diff --git a/lib/dpif-netdev.c b/lib/dpif-netdev.c
index 4ff1a425..d8f5ba73 100644
--- a/lib/dpif-netdev.c
+++ b/lib/dpif-netdev.c
@@ -160,7 +160,7 @@ get_dp_netdev(const struct dpif *dpif)
 static int
 name_to_dp_idx(const char *name)
 {
-    if (!strncmp(name, "dp", 2) && isdigit(name[2])) {
+    if (!strncmp(name, "dp", 2) && isdigit((unsigned char)name[2])) {
         int dp_idx = atoi(name + 2);
         if (dp_idx >= 0 && dp_idx < N_DP_NETDEVS) {
             return dp_idx;