#include <iostream>
class Target;

class Test {
 public:
  explicit Test(bool val)
    : str_("This is bool value") { }
  explicit Test(Target* target)
    : str_("This is target") { }
  const std::string& str() const {
    return str_;
  }
 private:
  std::string str_;
};

class Target {
 public:
  Target() { }
  void ConstMethod() const {
    Test test(this);
    std::cout << test.str() << std::endl;
  }
};

int main(int argc, char **argv) {
  Target target;
  target.ConstMethod();
  return 0;
}