Is there possibility of having overflow ? #77

Cursor* leaf_node_find(Table* table, uint32_t page_num, uint32_t key)
{
            // code  ....
    while (one_past_max_index != min_index) {
    uint32_t index = ( one_past_max_index+min_index ) / 2; // ??  overflow
    uint32_t key_at_index = *leaf_node_key(node, index);
    if (key == key_at_index) {
        // set the cursor to the current position before returning it 
        cursor->cell_num = index;
        return cursor;
    }
    // follow the normal binary search algorithm based
    // on where the condition fall to whether mid-1 of mid + 1
    if (key < key_at_index) { 
        one_past_max_index = index;
    } else {
        min_index = index + 1;
    }
  }
}