-#ifdef __STDC__
-extern int scm_handle_it (int i);
-extern void scm_warn (char *str1, char *str2);
-extern SCM scm_errno (SCM arg);
-extern SCM scm_perror (SCM arg);
-extern void scm_def_err_response (void);
-extern void scm_everr (SCM exp, SCM env, SCM arg, char *pos, char *s_subr);
-extern SCM scm_wta (SCM arg, char *pos, char *s_subr);
-extern void scm_init_error (void);
-
-#else /* STDC */
-extern int scm_handle_it ();
-extern void scm_warn ();
-extern SCM scm_errno ();
-extern SCM scm_perror ();
-extern void scm_def_err_response ();
-extern void scm_everr ();
-extern SCM scm_wta ();
-extern void scm_init_error ();
-
-#endif /* STDC */
+extern void scm_error SCM_P ((SCM key, const char *subr, const char *message,
+ SCM args, SCM rest)) SCM_NORETURN;
+extern SCM scm_error_scm SCM_P ((SCM key, SCM subr, SCM message,
+ SCM args, SCM rest)) SCM_NORETURN;
+extern SCM scm_strerror (SCM err);
+extern void scm_syserror SCM_P ((const char *subr)) SCM_NORETURN;
+extern void scm_syserror_msg SCM_P ((const char *subr, const char *message,
+ SCM args, int eno)) SCM_NORETURN;
+extern void scm_sysmissing SCM_P ((const char *subr)) SCM_NORETURN;
+extern void scm_num_overflow SCM_P ((const char *subr)) SCM_NORETURN;
+extern void scm_out_of_range SCM_P ((const char *subr, SCM bad_value))
+ SCM_NORETURN;
+extern void scm_wrong_num_args SCM_P ((SCM proc)) SCM_NORETURN;
+extern void scm_wrong_type_arg SCM_P ((const char *subr, int pos,
+ SCM bad_value)) SCM_NORETURN;
+extern void scm_memory_error SCM_P ((const char *subr)) SCM_NORETURN;
+extern void scm_misc_error SCM_P ((const char *subr, const char *message,
+ SCM args)) SCM_NORETURN;
+extern SCM scm_wta SCM_P ((SCM arg, const char *pos, const char *s_subr));
+extern void scm_init_error SCM_P ((void));