#define range_op_error(f,o) \
op_error((f),(o),range_check==range_check_on ? 1 : 0)
-extern void type_error (char *, ...) ATTR_FORMAT (printf, 1, 2);
+extern void type_error (const char *, ...) ATTR_FORMAT (printf, 1, 2);
-void
-range_error (char *, ...)
-ATTR_FORMAT (printf, 1, 2);
+extern void range_error (const char *, ...) ATTR_FORMAT (printf, 1, 2);
/* Data: Does this value represent "truth" to the current language? */