From a026c944670c0efe8f1a6bab4face33d2e3882b3 Mon Sep 17 00:00:00 2001
From: dak664 <dak664>
Date: Tue, 14 Dec 2010 22:45:22 +0000
Subject: [PATCH] Fix compiler warnings

---
 apps/webserver/httpd.c |  4 ++--
 core/net/uip_arp.c     | 14 ++++++++------
 core/net/uiplib.c      |  4 ++--
 3 files changed, 12 insertions(+), 10 deletions(-)

diff --git a/apps/webserver/httpd.c b/apps/webserver/httpd.c
index 464496e5b..fc80b5b05 100644
--- a/apps/webserver/httpd.c
+++ b/apps/webserver/httpd.c
@@ -30,7 +30,7 @@
  *
  * Author: Adam Dunkels <adam@sics.se>
  *
- * $Id: httpd.c,v 1.19 2010/10/19 18:29:03 adamdunkels Exp $
+ * $Id: httpd.c,v 1.20 2010/12/14 22:45:22 dak664 Exp $
  */
  
 #include <stdio.h>
@@ -185,7 +185,7 @@ PT_THREAD(handle_script(struct httpd_state *s))
 static
 PT_THREAD(send_headers(struct httpd_state *s, const char *statushdr))
 {
-  const char *ptr;
+  const char *ptr = NULL;     //gcc warning if not initialized
 
   PSOCK_BEGIN(&s->sout);
 
diff --git a/core/net/uip_arp.c b/core/net/uip_arp.c
index e8a65efd5..d3f656df4 100644
--- a/core/net/uip_arp.c
+++ b/core/net/uip_arp.c
@@ -54,7 +54,7 @@
  *
  * This file is part of the uIP TCP/IP stack.
  *
- * $Id: uip_arp.c,v 1.7 2010/10/24 22:29:39 adamdunkels Exp $
+ * $Id: uip_arp.c,v 1.8 2010/12/14 22:45:22 dak664 Exp $
  *
  */
 
@@ -161,17 +161,19 @@ uip_arp_timer(void)
   }
 
 }
+
 /*-----------------------------------------------------------------------------------*/
 static void
 uip_arp_update(uip_ipaddr_t *ipaddr, struct uip_eth_addr *ethaddr)
 {
-  register struct arp_entry *tabptr;
+  register struct arp_entry *tabptr = arp_table;
+
   /* Walk through the ARP mapping table and try to find an entry to
      update. If none is found, the IP -> MAC address mapping is
      inserted in the ARP table. */
   for(i = 0; i < UIP_ARPTAB_SIZE; ++i) {
-
     tabptr = &arp_table[i];
+
     /* Only check those entries that are actually in use. */
     if(!uip_ipaddr_cmp(&tabptr->ipaddr, &uip_all_zeroes_addr)) {
 
@@ -186,6 +188,7 @@ uip_arp_update(uip_ipaddr_t *ipaddr, struct uip_eth_addr *ethaddr)
 	return;
       }
     }
+	tabptr++;
   }
 
   /* If we get here, no existing ARP table entry was found, so we
@@ -362,7 +365,7 @@ uip_arp_arpin(void)
 void
 uip_arp_out(void)
 {
-  struct arp_entry *tabptr;
+  struct arp_entry *tabptr = arp_table;
   
   /* Find the destination IP address in the ARP table and construct
      the Ethernet header. If the destination IP addres isn't on the
@@ -393,12 +396,11 @@ uip_arp_out(void)
       /* Else, we use the destination IP address. */
       uip_ipaddr_copy(&ipaddr, &IPBUF->destipaddr);
     }
-      
     for(i = 0; i < UIP_ARPTAB_SIZE; ++i) {
-      tabptr = &arp_table[i];
       if(uip_ipaddr_cmp(&ipaddr, &tabptr->ipaddr)) {
 	break;
       }
+	  tabptr++;
     }
 
     if(i == UIP_ARPTAB_SIZE) {
diff --git a/core/net/uiplib.c b/core/net/uiplib.c
index af86a8708..3add7dd2c 100644
--- a/core/net/uiplib.c
+++ b/core/net/uiplib.c
@@ -29,7 +29,7 @@
  *
  * This file is part of the uIP TCP/IP stack and the Contiki operating system.
  *
- * $Id: uiplib.c,v 1.2 2010/05/31 15:22:08 nifi Exp $
+ * $Id: uiplib.c,v 1.3 2010/12/14 22:45:22 dak664 Exp $
  *
  */
 
@@ -48,7 +48,7 @@ uiplib_ipaddrconv(const char *addrstr, uip_ipaddr_t *ipaddr)
 #if UIP_CONF_IPV6
   uint16_t value;
   int tmp, len, zero;
-  char c;
+  char c = 0;  //gcc warning if not initialized
 
   value = 0;
   zero = -1;