static int toIntType(char *key, char *type) {
    if(!strcmp(type, "string")) {
        return TYPE_STRING;
    } else if(!strcmp(type, "list")) {
        return TYPE_LIST;
    } else if(!strcmp(type, "set")) {
        return TYPE_SET;
    } else if(!strcmp(type, "hash")) {
        return TYPE_HASH;
    } else if(!strcmp(type, "zset")) {
        return TYPE_ZSET;
    } else if(!strcmp(type, "none")) {
        return TYPE_NONE;
    } else {
        fprintf(stderr, "Unknown type '%s' for key '%s'\n", type, key);
        exit(1);
    }
}

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.