Re: static const int problem

Hi

The following code works:

#include <vector>
class C {
private:
    static const int m_static = 2;
public:
    void f(const std::vector<int>& v)
    {
        int a = m_static;
        std::vector<int> stripped(v.begin()+a, v.end());
        //std::vector<int> s2(v.begin()+m_static,v.end());
    }
};
int main()
{
    C c;
    std::vector<int> pv;
    int i;
    pv.push_back(i);
    pv.push_back(i);
    pv.push_back(i);
    c.f(pv);
}

But when I erase the comment in the void f(...), then compiler gives an
error:

g++ -ansi -Wall -o test test.cpp
/tmp/cckLnGUY.o: In function `C::f(std::vector<int, std::allocator<int>
 > const&)':
test.cpp:(.text._ZN1C1fERKSt6vectorIiSaIiEE[C::f(std::vector<int,
std::allocator<int> > const&)]+0xdb): undefined reference to `C::m_static'
collect2: ld returned 1 exit status
make: *** [test] Error 1

g++ --version
g++ (GCC) 4.1.2 20060928 (prerelease) (Ubuntu 4.1.1-13ubuntu5)

Can anybody tell me what I'm doing wrong?