1// RUN: %clang_cc1 -fsyntax-only -verify %s
2
3class A {};
4
5namespace B {
6  namespace A {} // expected-note{{namespace '::B::A' defined here}} \
7                 // expected-note 2{{namespace 'B::A' defined here}}
8  using namespace A ;
9}
10
11namespace C {} // expected-note{{namespace 'C' defined here}}
12
13namespace D {
14
15  class C {
16
17    using namespace B ; // expected-error{{not allowed}}
18  };
19
20  namespace B {}
21
22  using namespace C ;
23  using namespace B::A ; // expected-error{{no namespace named 'A' in namespace 'D::B'; did you mean '::B::A'?}}
24  using namespace ::B::A ;
25  using namespace ::D::F ; // expected-error{{expected namespace name}}
26  using namespace ::D::C ; // expected-error{{no namespace named 'C' in namespace 'D'; did you mean simply 'C'?}}
27}
28
29using namespace ! ; // expected-error{{expected namespace name}}
30using namespace A ; // expected-error{{no namespace named 'A'; did you mean 'B::A'?}}
31using namespace ::A // expected-error{{no namespace named 'A' in the global namespace; did you mean 'B::A'?}} \
32                    // expected-error{{expected ';' after namespace name}}
33                    B ;
34
35void test_nslookup() {
36  int B;
37  class C;
38  using namespace B;
39  using namespace C;
40}
41