static int emacs_get_tty (int, struct emacs_tty *);
static int emacs_set_tty (int, struct emacs_tty *, int);
#if defined TIOCNOTTY || defined USG5 || defined CYGWIN
-static void croak (char *) NO_RETURN;
+static _Noreturn void croak (char *);
#endif
/* Declare here, including term.h is problematic on some systems. */