template compile error

67: error: an explicit specialization must be preceded by 'template <>'

I'm guessing, as you haven't given enough information. It is usually a good idea to give a small but complete example that illustrates your problem. The code you've give will not trigger such an error (at least, not by itself).

Assuming you have defined a template class something like;

template<class T> Image 
{ 
    // whatever 
};  

then your reference to a Image<bool> is a specialisation of this template. What the compiler is attempting to tell you is that your definition needs to be in the form;

template<> class Image<bool> 
{ 
    // whatever you need for Image<bool> 
};  

gcc 컴파일러의 버전이 3.X.X로 올라가면서 2.9.6의 코드가 컴파일이 되지 않는다.

컴파일러님께서 하시라는 대로 하면 된다...