1 // RUN: clang-cc -fsyntax-only -verify %s
2 
3 class A {};
4 
5 namespace B {
6   namespace A {}
7   using namespace A ;
8 }
9 
10 namespace C {}
11 
12 namespace D {
13 
14   class C {
15 
16     using namespace B ; // expected-error{{expected member name or ';' after declaration specifiers}}
17     //FIXME: this needs better error message
18   };
19 
20   namespace B {}
21 
22   using namespace C ;
23   using namespace B::A ; // expected-error{{expected namespace name}}
24   //FIXME: would be nice to note, that A is not member of D::B
25   using namespace ::B::A ;
26   using namespace ::D::C ; // expected-error{{expected namespace name}}
27 }
28 
29 using namespace ! ; // expected-error{{expected namespace name}}
30 using namespace A ; // expected-error{{expected namespace name}}
31 using namespace ::A // expected-error{{expected namespace name}} \
32                     // expected-error{{expected ';' after namespace name}}
33                     B ;
34 
35 void test_nslookup() {
36   int B;
37   class C;
38   using namespace B;
39   using namespace C;
40 }
41 
42