copy constructor problem

Hi,

I have a problem and I don't know what is going on here.

I basically call a function defined as test(const bar &a), in which I
define a const reference to an object foo which comes from bar. At this
point I have a copy constructor which should not be the case.

A working example you can find below which explains it a bit better.

Am I just doing something stupidly wrong here?

Thanks for the help in any case.

// EXAMPLE HERE

#include <iostream>

class foo {
public:
  foo() { std::cout << "i foo" << std::endl; }
  foo(const foo &c) { std::cout << "c foo" << std::endl; }
  ~foo() { std::cout << "d foo" << std::endl; }
};

class bar {
public:
  bar(void);
  ~bar(void);

  foo operator()(void) const { return f; };
private:
  foo f;
};

bar::bar(void) { }
bar::~bar(void) { }

void test(const bar &b) {
  std::cout << "start test" << std::endl;
  const foo &f2 = b();
  std::cout << "end test" << std::endl;
}

int main(void) {
  bar b;
  test(b);
}

// THE OUTPUT

i foo
start test
c foo << DONT EXPECT THIS
end test
d foo
d foo