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net/socket: Fix compiler warning (regression for MinGW) 

Commit 213fd5087e removed a type cast
which is needed for MinGW:

net/socket.c:136: warning:
 pointer targets in passing argument 2 of ‘sendto’ differ in signedness
/usr/lib/gcc/amd64-mingw32msvc/4.4.4/../../../../amd64-mingw32msvc/include/winsock2.h:1313: note:
 expected ‘const char *’ but argument is of type ‘const uint8_t *’

Add a 'qemu_sendto' macro which provides that type cast where needed
and use the new macro instead of 'sendto'.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Stefan Hajnoczi <stefanha@gmail.com>
This commit is contained in:
Stefan Weil 2012-09-22 21:13:28 +02:00 committed by Stefan Hajnoczi
parent ad11ad7774
commit 73062dfe6b
2 changed files with 8 additions and 3 deletions
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6
net/socket.c
View File

@ -131,9 +131,9 @@ static ssize_t net_socket_receive_dgram(NetClientState *nc, const uint8_t *buf,
ssize_t ret; ssize_t ret;
do { do {
ret = sendto(s->fd, buf, size, 0, ret = qemu_sendto(s->fd, buf, size, 0,
(struct sockaddr *)&s->dgram_dst, (struct sockaddr *)&s->dgram_dst,
sizeof(s->dgram_dst)); sizeof(s->dgram_dst));
} while (ret == -1 && errno == EINTR); } while (ret == -1 && errno == EINTR);
if (ret == -1 && errno == EAGAIN) { if (ret == -1 && errno == EAGAIN) {

5
qemu-common.h
View File

@ -223,9 +223,14 @@ int qemu_pipe(int pipefd[2]);
#endif #endif
#ifdef _WIN32 #ifdef _WIN32
/* MinGW needs a type cast for the 'buf' argument. */
#define qemu_recv(sockfd, buf, len, flags) recv(sockfd, (void *)buf, len, flags) #define qemu_recv(sockfd, buf, len, flags) recv(sockfd, (void *)buf, len, flags)
#define qemu_sendto(sockfd, buf, len, flags, destaddr, addrlen) \
sendto(sockfd, (const void *)buf, len, flags, destaddr, addrlen)
#else #else
#define qemu_recv(sockfd, buf, len, flags) recv(sockfd, buf, len, flags) #define qemu_recv(sockfd, buf, len, flags) recv(sockfd, buf, len, flags)
#define qemu_sendto(sockfd, buf, len, flags, destaddr, addrlen) \
sendto(sockfd, buf, len, flags, destaddr, addrlen)
#endif #endif
/* Error handling. */ /* Error handling. */