template <class T, long S>
struct vecn
{
	T data[S];
};

template <class T> using vec1 = vecn<T, 1>;
template <class T> using vec2 = vecn<T, 2>;
template <class T> using vec3 = vecn<T, 3>;
template <class T> using vec4 = vecn<T, 4>;

void test()
{
	vecn<int, 1> x1;
	vecn<int, 2> x2;
	vecn<int, 3> x3;
	vecn<int, 4> x4;
	vec1<int> y1;		// highlight of 'vecX' fails with clang code model
	vec2<int> y2;
	vec3<int> y3;
	vec4<int> y4;
}