Constructor is not called for static object?

What is going on here?

Code:

---

const int value = 1;

// x is a public int
Test::Test() : x(value)
{}

---

Code:

---

Test& Test::instance()
{
        static Test instance;
        return instance;
}

---

Code:

---

Test test = Test::instance();
cout << test.x << endl; // This produces 0 and not 1!

---

Post the smallest and simplest compilable program that demonstrates the problem.

Code:

---

#include <iostream>

const int x = 1;

class Test
{
        public:
                const int x;
                static Test& instance()
                {
                        static Test instance;
                        return instance;
                }
        private:
                Test();
                Test(const Test&);
                Test& operator=(const Test&);
               
};

// x is a public int
Test::Test() : x(x)
{}

int main()
{
        Test& test = Test::instance();
       
        std::cout << test.x << std::endl;
}

---

I figured out what the problem is: I thought the initialization list would use the global variable x when initializing the class variable x, but it doesn't.

Try

Code:

---

// x is a public int
Test::Test() : x(::x)
{}

---

...and it should output 1.

So to answer your question: yes, it does call the constructor. But only once.