From a8976fd367a244aa4ef9e0b0878e45d5cceb69c0 Mon Sep 17 00:00:00 2001
From: likewise <likewise>
Date: Tue, 15 Apr 2003 09:16:39 +0000
Subject: [PATCH] Again accepted NULL to indicate IP_ADDR_ANY.

---
 src/include/ipv4/lwip/ip_addr.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/include/ipv4/lwip/ip_addr.h b/src/include/ipv4/lwip/ip_addr.h
index 86c9ffa9..75daaff8 100644
--- a/src/include/ipv4/lwip/ip_addr.h
+++ b/src/include/ipv4/lwip/ip_addr.h
@@ -58,7 +58,9 @@ extern const struct ip_addr ip_addr_broadcast;
 #define IP4_ADDR(ipaddr, a,b,c,d) (ipaddr)->addr = htonl(((u32_t)(a & 0xff) << 24) | ((u32_t)(b & 0xff) << 16) | \
                                                          ((u32_t)(c & 0xff) << 8) | (u32_t)(d & 0xff))
 
-#define ip_addr_set(dest, src) (dest)->addr = ((struct ip_addr *)src)->addr
+#define ip_addr_set(dest, src) (dest)->addr = \
+                               ((src) == NULL? 0:\
+                               ((struct ip_addr *)src)->addr)
 #define ip_addr_maskcmp(addr1, addr2, mask) (((addr1)->addr & \
                                               (mask)->addr) == \
                                              ((addr2)->addr & \