clang/test/CXX/basic/basic.lookup/basic.lookup.unqual/p14.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s
   2 // expected-no-diagnostics
   3
   4 // C++0x [basic.lookup.unqual]p14:
   5 //   If a variable member of a namespace is defined outside of the
   6 //   scope of its namespace then any name used in the definition of
   7 //   the variable member (after the declarator-id) is looked up as if
   8 //   the definition of the variable member occurred in its namespace.
   9
  10 namespace N {
  11   struct S {};
  12   S i;
  13   extern S j;
  14   extern S j2;
  15 }
  16
  17 int i = 2;
  18 N::S N::j = i;
  19 N::S N::j2(i);
  20
  21 namespace M {
  22   class X { };
  23   inline X operator-(int, X);
  24
  25   template<typename T>
  26   class Y { };
  27
  28   typedef Y<float> YFloat;
  29
  30   namespace yfloat {
  31     YFloat operator-(YFloat, YFloat);
  32   }
  33   using namespace yfloat;
  34 }
  35
  36 using namespace M;
  37
  38 namespace M {
  39
  40 class Other {
  41   void foo(YFloat a, YFloat b);
  42 };
  43
  44 }
  45
  46 void Other::foo(YFloat a, YFloat b) {
  47   YFloat c = a - b;
  48 }
  49
  50 namespace Other {
  51   void other_foo();
  52 }
  53
  54 namespace M2 {
  55   using namespace Other;
  56
  57   extern "C" {
  58     namespace MInner {
  59       extern "C" {
  60         class Bar {
  61           void bar();
  62         };
  63       }
  64     }
  65   }
  66 }
  67
  68 void M2::MInner::Bar::bar() {
  69   other_foo();
  70 }