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qemu/0036-util-qemu-sockets-Fix-GCC-9-build-w.patch

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From: Alistair Francis <Alistair.Francis@wdc.com>
Date: Sat, 4 May 2019 07:57:32 -0600
Subject: util/qemu-sockets: Fix GCC 9 build warnings
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Fix this warning when building with GCC9 on Fedora 30:
In function ‘strncpy’,
inlined from ‘unix_connect_saddr.isra.0’ at util/qemu-sockets.c:925:5:
/usr/include/bits/string_fortified.h:106:10: error: ‘__builtin_strncpy’ specified bound 108 equals destination size [-Werror=stringop-truncation]
106 | return __builtin___strncpy_chk (__dest, __src, __len, __bos (__dest));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In function ‘strncpy’,
inlined from ‘unix_listen_saddr.isra.0’ at util/qemu-sockets.c:880:5:
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Bruce Rogers <brogers@suse.com>
---
util/qemu-sockets.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/util/qemu-sockets.c b/util/qemu-sockets.c
index 9705051690..8c3322958f 100644
--- a/util/qemu-sockets.c
+++ b/util/qemu-sockets.c
@@ -829,7 +829,7 @@ static int unix_listen_saddr(UnixSocketAddress *saddr,
struct sockaddr_un un;
int sock, fd;
char *pathbuf = NULL;
- const char *path;
+ const char *path QEMU_NONSTRING;
sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0);
if (sock < 0) {
@@ -922,7 +922,7 @@ static int unix_connect_saddr(UnixSocketAddress *saddr, Error **errp)
memset(&un, 0, sizeof(un));
un.sun_family = AF_UNIX;
- strncpy(un.sun_path, saddr->path, sizeof(un.sun_path));
+ memcpy(un.sun_path, saddr->path, MIN(strlen(saddr->path), sizeof(un.sun_path)));
/* connect to peer */
do {