#include <iostream>
#include <type_traits>
using namespace std;
struct A
{
int f()&&
{
return 0;
}
};
template<typename T1, typename T2>
constexpr bool is_same_v = std::is_same<T1, T2>::value;
int main() {
auto* ptr = &A::f();
//std::cout<<is_same_v<decltype(ptr), int()> <<" "<< is_same_v<decltype(ptr), int(A::*)()>;
return 0;
}
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