Wait, is that an integer, or an array? Serious question, with initialiser lists I'm not sure any more.
auto i = {5};
is a std::initializer_list<int>, whereas auto i{5};
is an int (as of C++17): https://godbolt.org/g/eXXN3oSee also https://stackoverflow.com/questions/25612262/why-does-auto-x... .