int i, j, cmp, k = 0;
    char **buffer1, **buffer2;

    buffer1 = (char **)malloc(n*sizeof(char*));
    buffer2 = (char **)malloc(n*sizeof(char*));

    for(i = 0; i < n; i++) {
        buffer1[i] = m[i].ht;
    }

    printf("%s\n", buffer1[2]); // working

    for(i = 0; i < n; i++) {
        j = 0;

        while(j <= k) {
            cmp = strcmp(buffer1[i],buffer2[j]);
            if(!cmp) {
                break;
            } else {
                j++;
            }
        }

        if(j == k) {
            strcpy(buffer2[k],buffer1[i]);
            k++;
        }
    }

    // Above section produces segmentation fault: 11
    printf("%s\n", buffer2[2]); // Not working.