f->real_file_size) {
if (f->file_offset > f->real_file_size)
goto err_offset;
- f->io_size = f->real_file_size - f->file_offset;
+ if (f->file_offset)
+ f->io_size = f->real_file_size - f->file_offset;
}
} else if (f->real_file_size < td->o.file_size_low ||
f->real_file_size > td->o.file_size_high) {