[Qemu-devel] [PATCH 2/6] tests/vhost-user-bridge: Fix misuse of isdigit()

[Markus Armbruster <armbru@redhat.com>]

vubr_set_host() passes char values to isdigit().  Undefined behavior
when the value is negative.

Fix by using qemu_isdigit() instead.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 tests/vhost-user-bridge.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/vhost-user-bridge.c b/tests/vhost-user-bridge.c
index 0033b61f2e..d70b107ebc 100644
--- a/tests/vhost-user-bridge.c
+++ b/tests/vhost-user-bridge.c
@@ -645,7 +645,7 @@ vubr_host_notifier_setup(VubrDev *dev)
 static void
 vubr_set_host(struct sockaddr_in *saddr, const char *host)
 {
-    if (isdigit(host[0])) {
+    if (qemu_isdigit(host[0])) {
         if (!inet_aton(host, &saddr->sin_addr)) {
             fprintf(stderr, "inet_aton() failed.\n");
             exit(1);
-- 
2.17.2