1 // { dg-do compile { target c++11 } } 2 3 int operator""_t(long long unsigned) { 4 return 0; 5 } 6 7 namespace foo { 8 int operator""_t(long long unsigned) { 9 return 0; 10 } 11 } 12 main()13 int main() { 14 using foo::operator""_t; 15 10_t; 16 } 17