Re: definition of static member variables of a class template

Hi everyone,

I've been using the following code with GNU C++ compiler for a long
time:

    template <
    class Class1,
    class Class2

    class calculator {

                ... // some type definitions
        typedef std::map<KeyType, double> ConstantMapType;

        static ConstantMapType userConsts_;
                ... // the rest of the class is irrelevant

         };

Now, to initialize the static member variable, I had in the same
compilation unit:

template < class C1, class C2 >
typename calculator<C1,C2>::ConstantMapType
calculator<C1,C2>::userConsts_;

This has worked so far. Now I try to compile the same code with the
Intel C++ compiler, and I get

../cpputils/calculator.hpp(1449): error: declaration is incompatible
with "const calc::calculator<Class1, Class2>::ConstMap
calc::calculator<Class1, Class2>::constsMap_" (declared at line 260)
  const typename calculator<C1,C2>::ConstMap
calculator<C1,C2>::constsMap_;
 
^

where ^ is actually pointing to constMap_. Someone can tell me what is
happening here? Why is the Intel compiler complaining about this code?