test_functions.cpp

#include <functional>
#include <iostream>

void test() {
    
}

void test2() {
    
}

int main(){
    std::function<void()> a1(test);
    std::function<void()> a2(test);
    std::function<void()> a3(test2);
    std::cout << (*(a1.target<void(*)()>()) == *(a2.target<void(*)()>()));
    std::cout << std::endl;
    std::cout << (*(a1.target<void(*)()>()) == *(a3.target<void(*)()>()));
    std::cout << std::endl;
    return 0;
}