24
Consider:
int* ptr = (int*)0xDEADBEEF;
cout << (void*)&*ptr;
How illegal is the *, given that it's used in conjunction with an immediate & and given that there are no overloaded op&/op* in play?
(This has particular ramifications for addressing a past-the-end array element &myArray[n], an expression which is explicitly equivalent to &*(myArray+n). This Q&A addresses the wider case but I don't feel that it ever really satisfied the above question.)