Useless but curious compiler warning question

[Raccoon29]

Hi, here is a tea question:

the warning in subject is "class::constname will be initialized after const type class::secondconstname when initialized here [the initialization row]"

Situation:
let's suppose that we declare two constant variables in a class

class myCuriousClass{
      private:
             const int constant1;
             const int constant2;
      public:
             myCuriousClass();
};

class myCuriousClass{
      private:
             const int constant1;
             const int constant2;
      public:
             myCuriousClass();
};

To copy to clipboard, switch view to plain text mode 

and then we valorize them as expected within a class: by the constructor

myCuriousClass::myCuriousClass()
          :constant2(2),constant1(1)
{
      //nothing smart to do here
}

myCuriousClass::myCuriousClass()
          :constant2(2),constant1(1)
{
      //nothing smart to do here
}

To copy to clipboard, switch view to plain text mode 

the fact that we initialized them in reversed order than we declared them makes the compiler complain

myCuriousClass::constant1 will be initialized before const int myCuriousClass::constant2 when initialized here (row 3 of the second piece of code)

So the question is, what is the problem if I reverse the order? Why was dedicated a warning to this situation?

PS: for this test I used a MinGW compiler.

Thank you for your attention