From: Vincent Bernat <vincent@bernat.ch>
Date: Sat, 11 Feb 2023 09:59:53 +0000 (+0100)
Subject: interfaces: fix use of isdigit()
X-Git-Tag: 1.0.17~6
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=f493b636b25545ebda0efbc80308634b069fc9da;p=thirdparty%2Flldpd.git

interfaces: fix use of isdigit()

It is expecting an unsigned char. Make a cast.
---

diff --git a/src/daemon/interfaces-bsd.c b/src/daemon/interfaces-bsd.c
index 35e6f404..a8248fe9 100644
--- a/src/daemon/interfaces-bsd.c
+++ b/src/daemon/interfaces-bsd.c
@@ -310,7 +310,9 @@ ifbsd_denylist(struct lldpd *cfg, struct interfaces_device_list *interfaces)
 		int i;
 		if (strncmp(iface->name, "p2p", 3)) continue;
 		if (strlen(iface->name) < 4) continue;
-		for (i = 3; iface->name[i] != '\0' && isdigit(iface->name[i]); i++)
+		for (i = 3;
+		     iface->name[i] != '\0' && isdigit((unsigned char)(iface->name[i]));
+		     i++)
 			;
 		if (iface->name[i] == '\0') {
 			log_debug("interfaces", "skip %s: AirDrop interface",