/* Defined in callproc.c. */
-extern void block_child_signal (void);
-extern void unblock_child_signal (void);
+extern void block_child_signal (sigset_t *);
+extern void unblock_child_signal (sigset_t const *);
extern Lisp_Object encode_current_directory (void);
extern void record_kill_process (struct Lisp_Process *, Lisp_Object);