clang-tests-external/gdb/7.5/gdb/testsuite/gdb.cp/nsimport.cc

namespace A {
  int x = 11;
  namespace{
    int xx = 22;
  }
}

using namespace A;

namespace{
  int xxx = 33;
};

int main()
{
  x;
  xx;
  xxx;
  return 0;
}