MSVC++ compiler error C2143

Question

The following code excerpt is responsible for a cryptic MSVC++ compiler error:

template class Vec : public vector{
  public:
    Vec() :          


        

Answer 1

Why are you attempting to inherit from vector? This will cause you a lot of problems. The least of which is that vector does not have a virtual destructor. This will cause the wrong destructor to be called when deleting a polymorphic reference to your class which will lead to memory leaks or general bad behavior.

For instance, the following code will not call ~Vec() but will call ~vector() instead.

vector *pVec = new Vec();
delete pVec;  // Calls ~vector();

The actual compile error you are seeing though is because you're using the template syntax for the base constructor call. Simply remove that and it should compile

Vec() : vector() {}