Zero-initialize sockaddr_in and sockaddr_un structs that we're about
to fill in and pass to bind() or connect(), to ensure we don't leave
possible implementation-defined extension fields as uninitialized
garbage.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 tests/tcg/multiarch/linux-test.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tests/tcg/multiarch/linux-test.c b/tests/tcg/multiarch/linux-test.c
index c8c6aeddeb3..019d8175ca6 100644
--- a/tests/tcg/multiarch/linux-test.c
+++ b/tests/tcg/multiarch/linux-test.c
@@ -251,7 +251,7 @@ static void test_time(void)
 static int server_socket(void)
 {
     int val, fd;
-    struct sockaddr_in sockaddr;
+    struct sockaddr_in sockaddr = {};
 
     /* server socket */
     fd = chk_error(socket(PF_INET, SOCK_STREAM, 0));
@@ -271,7 +271,7 @@ static int server_socket(void)
 static int client_socket(uint16_t port)
 {
     int fd;
-    struct sockaddr_in sockaddr;
+    struct sockaddr_in sockaddr = {};
 
     /* server socket */
     fd = chk_error(socket(PF_INET, SOCK_STREAM, 0));
-- 
2.20.1

On Fri, Aug 13, 2021 at 04:05:06PM +0100, Peter Maydell wrote:
> Zero-initialize sockaddr_in and sockaddr_un structs that we're about
> to fill in and pass to bind() or connect(), to ensure we don't leave
> possible implementation-defined extension fields as uninitialized
> garbage.
> 
> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
> ---
>  tests/tcg/multiarch/linux-test.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org