diff -up pptp-1.7.2/pptp_ctrl.c.sign-compare pptp-1.7.2/pptp_ctrl.c

--- pptp-1.7.2/pptp_ctrl.c.sign-compare	2011-11-30 16:33:00.877964659 +0000

+++ pptp-1.7.2/pptp_ctrl.c	2011-11-30 18:49:17.603973525 +0000

@@ -193,7 +193,7 @@ int ctrlp_disp(PPTP_CONN * conn, void *

 void pptp_set_link(PPTP_CONN * conn, int peer_call_id);

 /*** log error information in control packets *********************************/

-static void ctrlp_error( int result, int error, int cause,

+static void ctrlp_error( int result, u_int8_t error, int cause,

         const char *result_text[], int max_result)

 {

     if( cause >= 0)

@@ -238,7 +238,7 @@ static const char *ctrl_msg_types[] = {

 #define MAX_CTRLMSG_TYPE 15

 /*** report a sent packet ****************************************************/

-static void ctrlp_rep( void * buffer, int size, int isbuff)

+static void ctrlp_rep( void * buffer, size_t size, int isbuff)

 {

     struct pptp_header *packet = buffer;

     unsigned int type;

@@ -532,7 +532,7 @@ int pptp_write_some(PPTP_CONN * conn) {

 	    return -1;

         }

     }

-    assert(retval <= conn->write_size);

+    assert((size_t)retval <= conn->write_size);

     conn->write_size -= retval;

     memmove(conn->write_buffer, conn->write_buffer + retval, conn->write_size);

     ctrlp_rep(conn->write_buffer, retval, 0);

diff -up pptp-1.7.2/pptp_gre.c.sign-compare pptp-1.7.2/pptp_gre.c

--- pptp-1.7.2/pptp_gre.c.sign-compare	2011-11-30 16:33:00.899964648 +0000

+++ pptp-1.7.2/pptp_gre.c	2011-11-30 16:33:00.911964643 +0000

@@ -200,8 +200,7 @@ void pptp_gre_copy(u_int16_t call_id, u_

 int decaps_hdlc(int fd, int (*cb)(int cl, void *pack, unsigned int len), int cl)

 {

     unsigned char buffer[PACKET_MAX];

-    unsigned int start = 0;

-    int end;

+    ssize_t start = 0, end;

     int status;

     static unsigned int len = 0, escape = 0;

     static unsigned char copy[PACKET_MAX];

@@ -210,7 +209,7 @@ int decaps_hdlc(int fd, int (*cb)(int cl

     /*  this is the only blocking read we will allow */

     if ((end = read (fd, buffer, sizeof(buffer))) <= 0) {

         int saved_errno = errno;

-        warn("short read (%d): %s", end, strerror(saved_errno));

+        warn("short read (%zd): %s", end, strerror(saved_errno));

 	switch (saved_errno) {

 	  case EMSGSIZE: {

 	    socklen_t optval, optlen = sizeof(optval);

@@ -499,7 +498,7 @@ int encaps_gre (int fd, void *pack, unsi

                 if (errno == ENOBUFS)

                     rc = 0;         /* Simply ignore it */

                 stats.tx_failed++;

-            } else if (rc < sizeof(u.header) - sizeof(u.header.seq)) {

+            } else if ((size_t)rc < sizeof(u.header) - sizeof(u.header.seq)) {

                 stats.tx_short++;

             } else {

                 stats.tx_acks++;

@@ -533,7 +532,7 @@ int encaps_gre (int fd, void *pack, unsi

         if (errno == ENOBUFS)

             rc = 0;         /* Simply ignore it */

         stats.tx_failed++;

-    } else if (rc < header_len + len) {

+    } else if ((size_t)rc < header_len + len) {

         stats.tx_short++;

     } else {

         stats.tx_sent++;

diff -up pptp-1.7.2/pqueue.c.sign-compare pptp-1.7.2/pqueue.c

--- pptp-1.7.2/pqueue.c.sign-compare	2008-05-14 07:33:55.000000000 +0100

+++ pptp-1.7.2/pqueue.c	2011-11-30 16:41:39.598648652 +0000

@@ -17,7 +17,7 @@

 #define MIN_CAPACITY 128 /* min allocated buffer for a packet */

-static int pqueue_alloc (int seq, unsigned char *packet, int packlen, pqueue_t **new);

+static int pqueue_alloc (u_int32_t seq, unsigned char *packet, int packlen, pqueue_t **new);

 int packet_timeout_usecs = DEFAULT_PACKET_TIMEOUT * 1000000;

@@ -29,7 +29,7 @@ static pqueue_t *pq_freelist_head = NULL

-static int pqueue_alloc(int seq, unsigned char *packet, int packlen, pqueue_t **new) {

+static int pqueue_alloc(u_int32_t seq, unsigned char *packet, int packlen, pqueue_t **new) {

   pqueue_t *newent;

@@ -125,7 +125,7 @@ static int pqueue_alloc(int seq, unsigne

-int pqueue_add (int seq, unsigned char *packet, int packlen) {

+int pqueue_add (u_int32_t seq, unsigned char *packet, int packlen) {

   pqueue_t *newent, *point;

   /* get a new entry */

diff -up pptp-1.7.2/pqueue.h.sign-compare pptp-1.7.2/pqueue.h

--- pptp-1.7.2/pqueue.h.sign-compare	2008-05-14 07:33:55.000000000 +0100

+++ pptp-1.7.2/pqueue.h	2011-11-30 18:42:16.733706666 +0000

@@ -15,14 +15,14 @@ extern int packet_timeout_usecs;

 typedef struct pqueue {

   struct pqueue *next;

   struct pqueue *prev;

-  int seq;

+  u_int32_t seq;

   struct timeval expires;

   unsigned char *packet;

   int packlen;

   int capacity;

 } pqueue_t;

-int       pqueue_add  (int seq, unsigned char *packet, int packlen);

+int       pqueue_add  (u_int32_t seq, unsigned char *packet, int packlen);

 int       pqueue_del  (pqueue_t *point);

 pqueue_t *pqueue_head ();

 int       pqueue_expiry_time (pqueue_t *entry);

diff -up pptp-1.7.2/test.c.sign-compare pptp-1.7.2/test.c

--- pptp-1.7.2/test.c.sign-compare	2008-05-14 07:33:55.000000000 +0100

+++ pptp-1.7.2/test.c	2011-11-30 18:45:44.553853995 +0000

@@ -52,7 +52,7 @@ static ssize_t write_reordered_swap(int

       test_ordering_phase = 0;

       /* send the new packet first */

       stat = write(fd, buf, count);

-      if (stat != count) return stat;

+      if ((size_t)stat != count) return stat;

       /* then send the old packet next */

       stat = write(fd, pocket_buf, pocket_count);

       free(pocket_buf);

@@ -96,7 +96,7 @@ static ssize_t write_reordered_retransmi

     test_ordering_phase = 0;

     /* send the new packet first */

     stat = write(fd, buf, count);

-    if (stat != count) return stat;

+    if ((size_t)stat != count) return stat;

     /* send the buffered packets in normal order */

     for (n=0; n

       stat = write(fd, pocket_buf[n], pocket_count[n]);

@@ -142,7 +142,7 @@ static ssize_t write_reordered_reverse(i

     test_ordering_phase = 0;

     /* send the new packet first */

     stat = write(fd, buf, count);

-    if (stat != count) return stat;

+    if ((size_t)stat != count) return stat;

     /* send the buffered packets in reverse order */

     for (n=test_length-1; n>0; n--) {

       stat = write(fd, pocket_buf[n], pocket_count[n]);