Make This code will never execute. a warning not an error

[Snikimonkd]

This code is impossible to compile:

import std:io;

fn int main(String[] args) {
    int a = 1;
    io::printfn("%s", a);
    return 0;
    a = 2;
}

it throws an error:

Error: This code will never execute.

it is nice that compiler can detect dead spots in the code, but sometimes during debug sessions i place early returns and then i need to coment all the code after this return, would be nice to make this a warning