-__dead void err __P((int, const char *, ...)) __attribute__((__noreturn__));
-__dead void verr __P((int, const char *, _BSD_VA_LIST_)) __attribute__((__noreturn__));
-__dead void errx __P((int, const char *, ...)) __attribute__((__noreturn__));
-__dead void verrx __P((int, const char *, _BSD_VA_LIST_)) __attribute__((__noreturn__));
-void warn __P((const char *, ...));
-void vwarn __P((const char *, _BSD_VA_LIST_));
-void warnx __P((const char *, ...));
-void vwarnx __P((const char *, _BSD_VA_LIST_));
+void err(int, const char *, ...) __DARWIN_LDBL_COMPAT(err) __dead2;
+void verr(int, const char *, __darwin_va_list) __DARWIN_LDBL_COMPAT(verr) __dead2;
+void errc(int, int, const char *, ...) __DARWIN_LDBL_COMPAT(errc) __dead2;
+void verrc(int, int, const char *, __darwin_va_list) __DARWIN_LDBL_COMPAT(verrc) __dead2;
+void errx(int, const char *, ...) __DARWIN_LDBL_COMPAT(errx) __dead2;
+void verrx(int, const char *, __darwin_va_list) __DARWIN_LDBL_COMPAT(verrx) __dead2;
+void warn(const char *, ...) __DARWIN_LDBL_COMPAT(warn);
+void vwarn(const char *, __darwin_va_list) __DARWIN_LDBL_COMPAT(vwarn);
+void warnc(int, const char *, ...) __DARWIN_LDBL_COMPAT(warnc);
+void vwarnc(int, const char *, __darwin_va_list) __DARWIN_LDBL_COMPAT(vwarnc);
+void warnx(const char *, ...) __DARWIN_LDBL_COMPAT(warnx);
+void vwarnx(const char *, __darwin_va_list) __DARWIN_LDBL_COMPAT(vwarnx);
+void err_set_file(void *);
+void err_set_exit(void (*)(int));
+