static void sigchld(int unused);

	/* Indicate explicitly to the OS that we are not interested in info
	 * about child processes (per POSIX.1-2001) */
	signal(SIGCHLD, SIG_IGN);

	/* clean up child processes immediately */
	sigchld(0);

}
void
sigchld(int unused)
{
	/* We should be able to remove this function in favor of a simple
	 *     signal(SIGCHLD, SIG_IGN);
	 * but the Xwayland implementation in wlroots currently prevents us from
	 * setting our own disposition for SIGCHLD.
	 */
	if (signal(SIGCHLD, sigchld) == SIG_ERR)
		EBARF("can't install SIGCHLD handler");
	while (0 < waitpid(-1, NULL, WNOHANG))
		;