open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#616
#include <vector>
using namespace std;
struct A
{
vector<int> coll;
};
void f(const vector<int>&){}
void f(vector<int>&&){}
int main()
{
f(A().coll); // Is "A().coll" an xvalue?
}
тирует ли C ++ 11f(A().coll) позвонюvoid f(vector<int>&&)?