17 namespace Numbers {  namespace
29   double n = Numbers::zero; // expected-error {{reference to 'zero' is ambiguous}}  in test()
30   Numbers::f(n); // expected-error{{call to 'f' is ambiguous}}  in test()
31   Numbers::f(i);  in test()
32   Numbers::f(f);  in test()
35 namespace Numbers {  namespace
49   Numbers::Number n = Numbers::zero;  in test2()
50   Numbers::f(n); // expected-error {{no matching function for call to 'f'}}  in test2()
51   Numbers::g(n);  in test2()
55   using Numbers::f;
56   using Numbers::g;
60   Numbers::Number n = Numbers::zero;  in test3()