From: Kamil Rytarowski <kamil@netbsd.org>
Date: Wed, 25 Jul 2018 00:35:52 +0000 (+0100)
Subject: Fix a promotion caught with gcc -fsanitize=undefined.
X-Git-Tag: v7.0.8~7
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=23d0716efc7ef95d255490736d01bba0321f754e;p=thirdparty%2Fdhcpcd.git

Fix a promotion caught with gcc -fsanitize=undefined.
---

diff --git a/src/dhcp.c b/src/dhcp.c
index 83c997b3..7a6749d4 100644
--- a/src/dhcp.c
+++ b/src/dhcp.c
@@ -3267,7 +3267,7 @@ get_udp_data(void *udp, size_t *len)
 	struct bootp_pkt *p;
 
 	p = (struct bootp_pkt *)udp;
-	*len = ntohs(p->ip.ip_len) - sizeof(p->ip) - sizeof(p->udp);
+	*len = (size_t)ntohs(p->ip.ip_len) - sizeof(p->ip) - sizeof(p->udp);
 	return (char *)udp + offsetof(struct bootp_pkt, bootp);
 }