tail_len          319 ext/zip/lib/zip_open.c         zip_uint64_t tail_len;
tail_len          322 ext/zip/lib/zip_open.c         tail_len = _zip_buffer_left(buffer);
tail_len          324 ext/zip/lib/zip_open.c         if (tail_len < comment_len || ((za->open_flags & ZIP_CHECKCONS) && tail_len != comment_len)) {