Compilare: user.cpp: In member function ‘void SuffixAutomaton::extend(char)’: user.cpp:30:45: warning: array subscript has type ‘char’ [-Wchar-subscripts] for (p = last; p != -1 && !state[p].next[c]; p = state[p].link) { ^ user.cpp:31:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] state[p].next[c] = current; ^ user.cpp:37:27: warning: array subscript has type ‘char’ [-Wchar-subscripts] int q = state[p].next[c]; ^ user.cpp:47:38: warning: array subscript has type ‘char’ [-Wchar-subscripts] for (; p != -1 && state[p].next[c] == q; p = state[p].link) { ^ user.cpp:48:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] state[p].next[c] = clone; ^