static void dump_boot(DOS_FS * fs, struct boot_sector *b, unsigned lss)
{
    unsigned short sectors;

    printf("Boot sector contents:\n");
    if (!atari_format) {
	char id[9];
	strncpy(id, (const char *)b->system_id, 8);
	id[8] = 0;
	printf("System ID \"%s\"\n", id);
    } else {
	/* On Atari, a 24 bit serial number is stored at offset 8 of the boot
	 * sector */
	printf("Serial number 0x%x\n",
	       b->system_id[5] | (b->system_id[6] << 8) | (b->
							   system_id[7] << 16));
    }
    printf("Media byte 0x%02x (%s)\n", b->media, get_media_descr(b->media));
    printf("%10d bytes per logical sector\n", GET_UNALIGNED_W(b->sector_size));
    printf("%10d bytes per cluster\n", fs->cluster_size);
    printf("%10d reserved sector%s\n", le16toh(b->reserved),
	   le16toh(b->reserved) == 1 ? "" : "s");
    printf("First FAT starts at byte %llu (sector %llu)\n",
 	   (unsigned long long)fs->fat_start,
 	   (unsigned long long)fs->fat_start / lss);
     printf("%10d FATs, %d bit entries\n", b->fats, fs->fat_bits);
    printf("%10lld bytes per FAT (= %llu sectors)\n", (long long)fs->fat_size,
	   (long long)fs->fat_size / lss);
     if (!fs->root_cluster) {
 	printf("Root directory starts at byte %llu (sector %llu)\n",
 	       (unsigned long long)fs->root_start,
	       (unsigned long long)fs->root_start / lss);
	printf("%10d root directory entries\n", fs->root_entries);
    } else {
	printf("Root directory start at cluster %lu (arbitrary size)\n",
	       (unsigned long)fs->root_cluster);
    }
    printf("Data area starts at byte %llu (sector %llu)\n",
	   (unsigned long long)fs->data_start,
	   (unsigned long long)fs->data_start / lss);
    printf("%10lu data clusters (%llu bytes)\n",
	   (unsigned long)fs->data_clusters,
	   (unsigned long long)fs->data_clusters * fs->cluster_size);
    printf("%u sectors/track, %u heads\n", le16toh(b->secs_track),
	   le16toh(b->heads));
    printf("%10u hidden sectors\n", atari_format ?
	   /* On Atari, the hidden field is only 16 bit wide and unused */
	   (((unsigned char *)&b->hidden)[0] |
	    ((unsigned char *)&b->hidden)[1] << 8) : le32toh(b->hidden));
    sectors = GET_UNALIGNED_W(b->sectors);
    printf("%10u sectors total\n", sectors ? sectors : le32toh(b->total_sect));
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.