静态变量:使用后进行构造

我正在一个控制台应用程序中使用Visual Studio 2013进行一些测试。涉及静态变量,我看到一些奇怪的行为。主要问题是静态 Printer 成员 GenericFactory 构造模板类 之后 我用它(在它里面) Register 函数)!

关于全局/静态变量和初始化顺序的规则非常复杂,所以有人可以帮助我理解这里的问题吗?代码如下。

main.cpp:

#include <iostream>

int main()
{
   std::cout << "Main Function\n";
}

通用系数.hpp:

#pragma once

#include <functional>
#include <map>
#include <memory>
#include <iostream>

class Printer
{
public:
   Printer()
   {
      std::cout << "Printer class created\n";
   }

   void Stuff()
   {
      std::cout << "Printer Stuff, Address " << (int)this << "\n";
   }
};

template<typename Key>
class GenericFactory
{
public:

   static Key const& Register(Key const& key)
   {
      GenericFactory::s_printer.Stuff();
      std::cout << "Registered: " << key << "\n";
      return key;
   }

private:
   static Printer s_printer;
};

template<typename Key>
Printer GenericFactory<Key>::s_printer;

字符串系数.hpp:

#pragma once

#include <string>
#include "GenericFactory.hpp"

using StringFactory = GenericFactory<int>;

测试1.cpp:

#include "StringFactory.hpp"

namespace Other
{
   static auto key = StringFactory::Register(100);
}

测试2.cpp:

#include "StringFactory.hpp"

namespace Other
{
   static auto key = StringFactory::Register(200);
}

运行上述应用程序后得到的输出:

Printer Stuff, Address 3422532
Registered: 100
Printer class created
Printer Stuff, Address 3422532
Registered: 200
Main Function

请注意 "Printer Stuff, ..." 之前已打印 "Printer class created" .我在这里疯了吗?