#include <cassert>
#include <iostream>

struct Record {
    char tag;
    int value;
};

struct alignas(double) AlignedTag {
    char tag;
};

int main() {
    static_assert(alignof(Record) >= alignof(int), "member alignment");
    static_assert(sizeof(Record) % alignof(Record) == 0, "array stride");
    static_assert(alignof(AlignedTag) >= alignof(double), "requested alignment");
    Record items[2] = {{'a', 10}, {'b', 20}};
    assert(items[1].value == 20);
    std::cout << items[0].tag << ' ' << items[1].value << '\n';
}