C++ Global variables and initialization order

Question

Let\'s say, I\'ve got a following simple code:

Main.cpp

#include \"A.h\"

// For several reasons this must be a global variable in t         


        

Answer 1

It sounds like you are trying to force the initialization of the static to happen before the constructor is called. The last time I encountered this problem, the only reliable fix was to wrap the static inside a function.

Change the declaration to a function returning reference to string.

static std::string& myString();

Change the definition to a function like this:

std::string& A::myString() {
     static std::string dummy = "test";
     return dummy;
}

Change your constructor to say:

myString() += "1";

I do not currently have an MSFT compiler handy, so you may have to tweak this a little bit, but this basically forces on-demand initialization of static.

Here is a very short test programming demonstrating how this works:

#include 
#include 


std::string& myString() {
     static std::string dummy = "test";
     return dummy;
}

int main(){
    myString() += "1";
    printf("%s\n", myString().c_str());
}