MSVCStatic, C++ (vc++)

MSVCStatic

#include <iostream>

// 1
static int initBeforeMain = [] {
    std::cout << "1 initBeforeMain" << std::endl;
    return 10;
}();

// 2
struct Base {
    static int initInBase;
};

int Base::initInBase = [] {
    std::cout << "2 initInBase" << std::endl;
    return 10;
}();

struct Derived : Base {};

// 3
template<typename T, T> struct StaticInitializer { };

template<class T>
struct BaseT {
    static int initInBase;
    using initStatic = StaticInitializer<int&, initInBase>;
};

template<class T>
int BaseT<T>::initInBase = [] {
    std::cout << "3 initInBase template" << std::endl;
    return 10;
}();

struct DerivedT : BaseT<int> {};

// 4
template<typename T, T>
struct BitFieldSize {   
    constexpr static int value = 0;
};
using CharT = char;

template<typename T>
struct BaseWithoutNewTypes {
  static int initInBase;
  CharT :BitFieldSize<int&, initInBase>::value;
};

template<class T>
int BaseWithoutNewTypes<T>::initInBase = [] {
    std::cout << "4 initInBase template without new types" << std::endl;
    return 10;
}();

struct DerivedWithoutTypes : BaseWithoutNewTypes<int> {};

// 5 MSVC specific
template<typename T>
struct BaseForMSVC {
  static int initInBase;
  constexpr static int *unusedAddr = &initInBase;
};

template<class T>
int BaseForMSVC<T>::initInBase = [] {
    std::cout << "5 initInBase MSVC" << std::endl;
    return 10;
}();

struct DerivedMSVC : BaseForMSVC<int> {};

int main () {
    // 2
    Derived d;

// 3
    DerivedT dt;

// 4
    DerivedWithoutTypes dwt;

// 5
    DerivedMSVC dmsvc;
}


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