deque-blog/vector_not_a_literal_type_2.cpp

## vector_not_a_literal_type_2.cpp
// Compiles fine
int avg = average(std::vector<int>{1, 2, 4, 5});

// Does not compile
constexpr int avg = average(std::vector<int>{1, 2, 4, 5});
	// Compiles fine
	int avg = average(std::vector<int>{1, 2, 4, 5});

	// Does not compile
	constexpr int avg = average(std::vector<int>{1, 2, 4, 5});