initialize all bytes

* ensures alignment padding is initialized so valgrind is satisfied

1 files changed, 1 insertions, 0 deletions

diff --git a/vespalib/src/tests/net/send_fd/send_fd_test.cpp b/vespalib/src/tests/net/send_fd/send_fd_test.cpp
index 077c7495b77..ce7e7f20b30 100644
--- a/vespalib/src/tests/net/send_fd/send_fd_test.cpp
+++ b/vespalib/src/tests/net/send_fd/send_fd_test.cpp
@@ -65,6 +65,7 @@ void send_fd(SocketHandle &socket, SocketHandle fd) {
     data.iov_base = &tag;
     data.iov_len = 1;
     char buf[CMSG_SPACE(sizeof(int))];
+    memset(buf, 0, sizeof(buf));
     msg.msg_iov = &data;
     msg.msg_iovlen = 1;
     msg.msg_control = buf;