speller - unload returns false .....?

Question

unload returns false and i am not sure why.... when i run Valgrind i get this:

HEAP SUMMARY:

==7885== in use at exit: 608 bytes in 2 blocks

==7885== total heap usage: 143,096 allocs, 143,094 frees, 8,023,416 bytes allocated

==7885== 56 bytes in 1 blocks are still reachable in loss record 1 of 2

LEAK SUMMARY:

==7885== definitely lost: 0 bytes in 0 blocks

==7885== indirectly lost: 0 bytes in 0 blocks

==7885== possibly lost: 0 bytes in 0 blocks

==7885== still reachable: 608 bytes in 2 blocks

==7885== suppressed: 0 bytes in 0 blocks

i dont understand where that 608 bytes leak is from.....

// Unloads dictionary from memory, returning true if successful else false
bool unload(void)
{
    node *current[N - 1];
    node *temp[N - 1];
    for (int i = 0; i < N; i++)
    {
        if (table[i] != NULL)
        {
            //initialize the current node pointer to the table`s head
            current[i] = table[i];
            //initialize the temporary node pointer to the same node as current node pointer
            temp[i] = current[i];

            //delete nodes in the list and free the memory
            while (current[i] != NULL)
            {
                current[i] = current[i]->next;
                free(temp[i]);
                temp[i] = current[i];
            }
        }
    }

    //check that memory has been freed
    for (int i = 0; i < N; i++)
    {
        if (table[i] != NULL)
        {
            return false;
        }
    }
    return true;
}

Answer 1

Why does the code use pointer arrays for current and temp? Each can be a simple pointer. With arrays, the code is bouncing all over the place, sometimes into nonexistent memory.

There may be more issues, but you deserve the opportunity to work on them first.

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