Is this code broken or is there a bug in g++?

For some strange reason g++ (versions 4.5.0 and 4.5.2) cannot compile this code:

bool somefunc() {
    return false;
}

class C {
  public:
    static const int a = 0;
    static const int b = 1;
};

class myclass {
  public:
    int check() {
        return somefunc() ? C::a : C::b;
        // if(somefunc()) return C::a; else return C::b;
    }
};

int main() {
    myclass obj;
    obj.check();
    return 0;
}

It gives me this error:

/tmp/ccyvvTUy.o:/home/mati/test.cpp:14: undefined reference to `C::a'
/tmp/ccyvvTUy.o:/home/mati/test.cpp:14: undefined reference to `C::b'
collect2: ld returned 1 exit status

What's strange if I change problematic line to the commented line it compiles fine. Is it something wrong with my code and something I don't understand about C++ or is it just a bug in G++ ?