From: Roy Marples <roy@marples.name>
Date: Sun, 10 May 2009 20:20:18 +0000 (+0000)
Subject: Some glibc versions have a NULL ifa_addr for the ifa from getifaddrs(3).
X-Git-Tag: v5.0.3~3
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=53814ee2e868f24dd1c5676fafb9af01f17bea10;p=thirdparty%2Fdhcpcd.git

Some glibc versions have a NULL ifa_addr for the ifa from getifaddrs(3).
---

diff --git a/net.c b/net.c
index a52901ed..77cd5fdd 100644
--- a/net.c
+++ b/net.c
@@ -272,6 +272,8 @@ discover_interfaces(int argc, char * const *argv)
 
 	ifs = ifl = NULL;
 	for (ifa = ifaddrs; ifa; ifa = ifa->ifa_next) {
+		if (ifa->ifa_addr == NULL) /* should not happen */
+			continue;
 #ifdef AF_LINK
 		if (ifa->ifa_addr->sa_family != AF_LINK)
 			continue;
@@ -372,6 +374,8 @@ do_address(const char *ifname,
 
 	retval = 0;
 	for (ifa = ifaddrs; ifa; ifa = ifa->ifa_next) {
+		if (ifa->ifa_addr == NULL) /* should not happen */
+			continue;
 		if (ifa->ifa_addr->sa_family != AF_INET ||
 		    strcmp(ifa->ifa_name, ifname) != 0)
 			continue;