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From 96f47b0d2c307173e0a545ea230e21f1ce8d3fa2 Mon Sep 17 00:00:00 2001
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From: Stefan Weil <sw@weilnetz.de>
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Date: Sat, 22 Sep 2012 21:13:28 +0200
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Subject: [PATCH] net/socket: Fix compiler warning (regression for MinGW)
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Commit 213fd5087e2e4e2da10ad266df0ba950cf7618bf removed a type cast
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which is needed for MinGW:
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net/socket.c:136: warning:
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pointer targets in passing argument 2 of ‘sendto’ differ in signedness
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/usr/lib/gcc/amd64-mingw32msvc/4.4.4/../../../../amd64-mingw32msvc/include/winsock2.h:1313: note:
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expected ‘const char *’ but argument is of type ‘const uint8_t *’
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Add a 'qemu_sendto' macro which provides that type cast where needed
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and use the new macro instead of 'sendto'.
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Signed-off-by: Stefan Weil <sw@weilnetz.de>
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Signed-off-by: Stefan Hajnoczi <stefanha@gmail.com>
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(cherry picked from commit 73062dfe6be0050dbd43ce3516e935ebb2545add)
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Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
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---
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net/socket.c | 6 +++---
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qemu-common.h | 5 +++++
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2 files changed, 8 insertions(+), 3 deletions(-)
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diff --git a/net/socket.c b/net/socket.c
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index c3e55b8..83f21b5 100644
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--- a/net/socket.c
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+++ b/net/socket.c
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@@ -131,9 +131,9 @@ static ssize_t net_socket_receive_dgram(NetClientState *nc, const uint8_t *buf,
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ssize_t ret;
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do {
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- ret = sendto(s->fd, buf, size, 0,
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- (struct sockaddr *)&s->dgram_dst,
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- sizeof(s->dgram_dst));
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+ ret = qemu_sendto(s->fd, buf, size, 0,
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+ (struct sockaddr *)&s->dgram_dst,
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+ sizeof(s->dgram_dst));
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} while (ret == -1 && errno == EINTR);
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if (ret == -1 && errno == EAGAIN) {
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diff --git a/qemu-common.h b/qemu-common.h
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index e5c2bcd..15d9e4e 100644
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--- a/qemu-common.h
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+++ b/qemu-common.h
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@@ -223,9 +223,14 @@ int qemu_pipe(int pipefd[2]);
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#endif
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#ifdef _WIN32
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+/* MinGW needs a type cast for the 'buf' argument. */
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#define qemu_recv(sockfd, buf, len, flags) recv(sockfd, (void *)buf, len, flags)
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+#define qemu_sendto(sockfd, buf, len, flags, destaddr, addrlen) \
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+ sendto(sockfd, (const void *)buf, len, flags, destaddr, addrlen)
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#else
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#define qemu_recv(sockfd, buf, len, flags) recv(sockfd, buf, len, flags)
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+#define qemu_sendto(sockfd, buf, len, flags, destaddr, addrlen) \
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+ sendto(sockfd, buf, len, flags, destaddr, addrlen)
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#endif
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/* Error handling. */
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--
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1.7.12.1
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