Compilare: user.cpp: In instantiation of ‘AVL<T>::Node* AVL<T>::balance(AVL<T>::Node*) [with T = int]’: user.cpp:391:32: required from ‘AVL<T>::Node* AVL<T>::insert(AVL<T>::Node*, T&) [with T = int]’ user.cpp:491:39: required from ‘void AVL<T>::insert(T) [with T = int]’ user.cpp:518:33: required from here user.cpp:475:40: warning: assuming signed overflow does not occur when assuming that (X + c) < X is always false [-Wstrict-overflow] if(node->right->height + 1 < node->right->height) { ^