size = fread (buf, sizeof (char), buflen, f_in);
if (ferror (f_in))
as_bad (_("can't read from %s: %s"), file_name, xstrerror (errno));
size = fread (buf, sizeof (char), buflen, f_in);
if (ferror (f_in))
as_bad (_("can't read from %s: %s"), file_name, xstrerror (errno));