clang/test/Parser/cxx-using-directive.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2
   3 class A {};
   4
   5 namespace 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
  11 namespace C {} // expected-note{{namespace 'C' defined here}}
  12
  13 namespace 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
  29 using namespace ! ; // expected-error{{expected namespace name}}
  30 using namespace A ; // expected-error{{no namespace named 'A'; did you mean 'B::A'?}}
  31 using 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
  35 void test_nslookup() {
  36   int B;
  37   class C;
  38   using namespace B;
  39   using namespace C;
  40 }