const auto min = -std::numeric_limits<T>::max(); T x = min; // conversion from 'const int' to 'short', possible loss of data T is a template argument, a short in this case. Unary minus apparently performs integral promotion. Why does unary minus perform integral promotion? If auto is changed to T no warning is generated, but it should be assigning an int to a short. Why isn't there a warning (it could be VS being fancy)?

Why does unary minus perform integral promotion?

const auto min = -std::numeric_limits<T>::max();
T x = min; // conversion from 'const int' to 'short', possible loss of data

T is a template argument, a short in this case. Unary minus apparently performs integral promotion.

Why does unary minus perform integral promotion?
If auto is changed to T no warning is generated, but it should be assigning an int to a short. Why isn't there a warning (it could be VS being fancy)?