#include <list>
#include <stack>
#include <vector>
struct C {
// Constructor for testing emplace.
C(int i) : i(i) {};
int i;
};
int main(int argc, char **argv) {
// std::deque is the default container.
std::stack<C> s_deque({{1}, {2}, {3}});
std::stack<C, std::vector<C>> s_vector({{1}, {2}, {3}});
std::stack<C, std::list<C>> s_list({{1}, {2}, {3}});
return 0; // Set break point at this line.
}