This is OK:
template<typename T> void test1(T x) {}
void abbreviated_test1(auto x) {} // equivalent to above
But this is not:
template <typename T> struct matrix {};
template<typename T> void test2(matrix<T> x) {}
// try abbreviated form:
void abbreviated_test2(matrix<auto> x) {} // error: 'auto' not allowed in template argument
Is there a reason why? Are there plans to support more complex abbreviated function templates in the future?
