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// { dg-do compile }

// Origin: Giovanni Bajo 

// DR101: Redeclaration of extern "C" names via using-declarations

namespace Test1 {

  typedef unsigned int X;

  extern "C" void f1();

  namespace N {

    typedef unsigned int X;

    extern "C" void f1();

  }

  using N::f1; // { dg-bogus "" "redeclaration through 'using' should not be ambiguous" }

  using N::X;  // { dg-bogus "" "redeclaration through 'using' should not be ambiguous" }

}

namespace Test2 {

  typedef unsigned int X;   // { dg-bogus "X" "" }

  extern "C" int f2();

  namespace N {

    typedef unsigned int X; // { dg-bogus "X" "" }

    extern "C" int f2();

  }

  using namespace N;

  int i = f2(); // { dg-bogus "" "redeclaration through 'using' should not be ambiguous" }

  X x;          // { dg-bogus "" "redeclaration through 'using' should not be ambiguous" }

}