connection socket has no close-on-exec flag set

After opening connection with mysql_real_connect(), the connection socket (the one that mysql_get_socket() returns) has no close-on-exec flag set. The following code is needed after calling mysql_real_connect() to get this flag set:

// Set CLOEXEC flag on the mysql socket

int mysql_socket = mysql_get_socket(...);

int flags = fcntl(mysql_socket, F_GETFD);

if (flags == -1)

	/* Handle error */;

if (fcntl(mysql_socket, F_SETFD, flags | FD_CLOEXEC) == -1)

	/* Handle error */;

I suppose that this flag should be set by the connector, for security reasons.