[Qemu-devel] [PATCH] Win32: Fix compiler warnings.

[Stefan Weil]

In Win32 API, the functions send, sendto and recv
expect a (const) char * buffer argument.

QEMU typically uses uint8_t * buffer arguments which must
be casted to avoid this warning from newer gcc versions:

warning: pointer targets in passing argument 2 of ‘sendto’ differ in signedness

Signed-off-by: Stefan Weil <address@hidden>
---
 net.c       |    6 +++---
 qemu-char.c |    6 +++---
 savevm.c    |    2 +-
 vnc.c       |    4 ++--
 4 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/net.c b/net.c
index 039f78b..e190865 100644
--- a/net.c
+++ b/net.c
@@ -1505,7 +1505,7 @@ static ssize_t net_socket_receive_dgram(VLANClientState 
*vc, const uint8_t *buf,
 {
     NetSocketState *s = vc->opaque;
 
-    return sendto(s->fd, buf, size, 0,
+    return sendto(s->fd, (const void *)buf, size, 0,
                   (struct sockaddr *)&s->dgram_dst, sizeof(s->dgram_dst));
 }
 
@@ -1517,7 +1517,7 @@ static void net_socket_send(void *opaque)
     uint8_t buf1[4096];
     const uint8_t *buf;
 
-    size = recv(s->fd, buf1, sizeof(buf1), 0);
+    size = recv(s->fd, (void *)buf1, sizeof(buf1), 0);
     if (size < 0) {
         err = socket_error();
         if (err != EWOULDBLOCK)
@@ -1579,7 +1579,7 @@ static void net_socket_send_dgram(void *opaque)
     NetSocketState *s = opaque;
     int size;
 
-    size = recv(s->fd, s->buf, sizeof(s->buf), 0);
+    size = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
     if (size < 0)
         return;
     if (size == 0) {
diff --git a/qemu-char.c b/qemu-char.c
index 1c0c9f5..a8afe94 100644
--- a/qemu-char.c
+++ b/qemu-char.c
@@ -1708,7 +1708,7 @@ static int udp_chr_write(CharDriverState *chr, const 
uint8_t *buf, int len)
 {
     NetCharDriver *s = chr->opaque;
 
-    return sendto(s->fd, buf, len, 0,
+    return sendto(s->fd, (const void *)buf, len, 0,
                   (struct sockaddr *)&s->daddr, sizeof(struct sockaddr_in));
 }
 
@@ -1737,7 +1737,7 @@ static void udp_chr_read(void *opaque)
 
     if (s->max_size == 0)
         return;
-    s->bufcnt = recv(s->fd, s->buf, sizeof(s->buf), 0);
+    s->bufcnt = recv(s->fd, (void *)s->buf, sizeof(s->buf), 0);
     s->bufptr = s->bufcnt;
     if (s->bufcnt <= 0)
         return;
@@ -1913,7 +1913,7 @@ static void tcp_chr_read(void *opaque)
     len = sizeof(buf);
     if (len > s->max_size)
         len = s->max_size;
-    size = recv(s->fd, buf, len, 0);
+    size = recv(s->fd, (void *)buf, len, 0);
     if (size == 0) {
         /* connection closed */
         s->connected = 0;
diff --git a/savevm.c b/savevm.c
index cae7117..61edd7e 100644
--- a/savevm.c
+++ b/savevm.c
@@ -190,7 +190,7 @@ static int socket_get_buffer(void *opaque, uint8_t *buf, 
int64_t pos, int size)
     ssize_t len;
 
     do {
-        len = recv(s->fd, buf, size, 0);
+        len = recv(s->fd, (void *)buf, size, 0);
     } while (len == -1 && socket_error() == EINTR);
 
     if (len == -1)
diff --git a/vnc.c b/vnc.c
index dbbeb14..e1ca9f8 100644
--- a/vnc.c
+++ b/vnc.c
@@ -961,7 +961,7 @@ long vnc_client_write_buf(VncState *vs, const uint8_t 
*data, size_t datalen)
         }
     } else
 #endif /* CONFIG_VNC_TLS */
-        ret = send(vs->csock, data, datalen, 0);
+        ret = send(vs->csock, (const void *)data, datalen, 0);
     VNC_DEBUG("Wrote wire %p %zd -> %ld\n", data, datalen, ret);
     return vnc_client_io_error(vs, ret, socket_error());
 }
@@ -1066,7 +1066,7 @@ long vnc_client_read_buf(VncState *vs, uint8_t *data, 
size_t datalen)
         }
     } else
 #endif /* CONFIG_VNC_TLS */
-        ret = recv(vs->csock, data, datalen, 0);
+        ret = recv(vs->csock, (void *)data, datalen, 0);
     VNC_DEBUG("Read wire %p %zd -> %ld\n", data, datalen, ret);
     return vnc_client_io_error(vs, ret, socket_error());
 }
-- 
1.5.6.5