diff --git a/components/net/lwip-2.1/porting/include/arch/cc.h b/components/net/lwip-2.1/porting/include/arch/cc.h
index f305d3c9c7fd0006348cd552e8f99705b4e25da6..4a3e5903add00fd6e334201b1cf4100299fe86a9 100644
--- a/components/net/lwip-2.1/porting/include/arch/cc.h
+++ b/components/net/lwip-2.1/porting/include/arch/cc.h
@@ -63,7 +63,7 @@
 #define LWIP_DNS_API_DEFINE_FLAGS     0
 #define LWIP_DNS_API_DECLARE_STRUCTS  0
 
-#ifndef __SIZEOF_POINTER__ 4
+#ifndef __SIZEOF_POINTER__
 #define __SIZEOF_POINTER__ 4   // 32位系统
 #endif
 
diff --git a/components/net/lwip-2.1/porting/include/lwip/sockets.h b/components/net/lwip-2.1/porting/include/lwip/sockets.h
index c149113f75f7181c17b10ec67abf8c599b7ce24c..0aefba52d4ba94e895a40d2924dd7e510d6897f0 100644
--- a/components/net/lwip-2.1/porting/include/lwip/sockets.h
+++ b/components/net/lwip-2.1/porting/include/lwip/sockets.h
@@ -63,7 +63,7 @@ extern "C" {
 #endif
 
 // For BSD 4.4 socket sa_len compatibility
-#define DF_NADDR(addr) ip_addr_t naddr = addr
+#define DF_NADDR(addr)
 #define SA_LEN(addr, _)  (IP_IS_V4_VAL(addr) ? sizeof(struct sockaddr_in) : sizeof(struct sockaddr_in6))
 #define sa_len sa_data[0] * 0 + SA_LEN(naddr, _)
 #define sin_len sin_zero[0]
diff --git a/components/net/test/net_socket_test_002.c b/components/net/test/net_socket_test_002.c
index 1f0fb1ff8c890276cbbe433d04d046e8485f205a..b08efb008a34e311be120632067fef6d006e850f 100644
--- a/components/net/test/net_socket_test_002.c
+++ b/components/net/test/net_socket_test_002.c
@@ -42,7 +42,7 @@ extern sys_thread_t sys_thread_new(const char *name, lwip_thread_fn thread, void
 
 void UdpTestTask(void *p)
 {
-	void(p);
+    (void)p;
     LogPrintln("net_socket_test_002.c enter");
     g_testCase = TEST_CASE;
     int sfd;
@@ -119,11 +119,10 @@ void UdpTestTask(void *p)
     return;
 }
 
-int UdpTest(void)
+int UdpTest()
 {
     int ret = sys_thread_new("udp_test", UdpTestTask, NULL,
         STACK_TEST_SIZE, TCPIP_THREAD_PRIO);
     ICUNIT_ASSERT_NOT_EQUAL(ret, -1, 23);
     return ret;
 }
-
diff --git a/components/net/test/net_socket_test_011.c b/components/net/test/net_socket_test_011.c
index 2e18b7a67052e09e043db53749b923dc20d1c5d9..32174654bd9810526b2e6eeff30c06d6a640eaab 100644
--- a/components/net/test/net_socket_test_011.c
+++ b/components/net/test/net_socket_test_011.c
@@ -312,7 +312,7 @@ static struct netif *CreateBtNetIf()
 
 static void UdpTestNetifTask(void *p)
 {
-    void(p);
+    (void)p;
     LogPrintln("net_socket_test_011.c enter");
     g_testCase = TEST_CASE;
     int sfd;
@@ -367,7 +367,7 @@ static void UdpTestNetifTask(void *p)
     return;
 }
 
-int UdpTestNetif(void)
+int UdpTestNetif()
 {
     int ret = sys_thread_new("udp_test_netif", UdpTestNetifTask, NULL,
         STACK_TEST_SIZE, TCPIP_THREAD_PRIO);