Consider a piece of code below. Is there an integer literal that would compile on both 32-bit and 64-bit platforms?

#include <iostream>
#include <cstdint>

void f(double)
{
    std::cout << "double\n";
}

void f(int64_t)
{
    std::cout << "int64_t\n";
}

int main()
{
    f(0L);  // works on 64-bit fails on 32-bit system
    f(0LL); // fails on 64-bit but works on 32-bit system

    f(int64_t(0));              // works on both, but is ugly...
    f(static_cast<int64_t>(0)); // ... even uglier

    return 0;
}

On platforms where int64_t is long, 0LL is a different type and overload resolution doesn’t prefer it vs. double.