#include <iostream>
using namespace std;
struct A {};
struct B
{
B() : a{}
{
}
const A& a;
};
int main() {
A a;
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgp1c2luZyBuYW1lc3BhY2Ugc3RkOwoKc3RydWN0IEEge307CgpzdHJ1Y3QgQgp7CglCKCkgOiBhe30KCXsKCX0KCQoJY29uc3QgQSYgYTsKfTsKCmludCBtYWluKCkgewoJQSBhOwoJcmV0dXJuIDA7Cn0=