Segfault in pset5 in load

Question

My implementation of load uses a trie and when I attempt to access the bool is_word I get a segfault. Can you guys help me out? Any suggestions on how to improve my code would be amazing. Thanks everyone!

bool load(const char* dictionary)
{
node* root = malloc(sizeof(node));
for(int i = 0; i < 27; i++) {
    root->children[i] = NULL;
}

node* current = malloc(sizeof(node));
current = root;
for(int i = 0; i < 27; i++) {
    current->children[i] = NULL;
}

FILE* dict = fopen(dictionary, "r");
if(dict == NULL) {
    return false;
}

char letter = 'a';

do {
    letter = fgetc(dict);
    if(letter == EOF) {
        current->is_word = true;
        break;
    }

    if(letter == '\n') {
        current->is_word = true;
        current = root;
    } else {
        int pos = tolower(letter) - 'a';
        if(current->children[pos] == NULL) {
            current->children[pos] = malloc(sizeof(node));
            current->children[pos] = NULL;
        }
        current = current->children[pos];
    }

}while(letter != EOF);

fclose(dict);
return false;

}

Answer 1

Did you declare and initialize is_word to false?

Answer 2

I figured it out. I wasn't able to initialize is_word to false because I was setting the whole node to NULL.