# Tests var parameters. TODO: They don't actually exist yet, they're just checked statically

import std;


operator `+=`(a: var int, b: int) {
    a = a + b;
}


fn plusOne(x: var int): int {
    x += 1;
    return x;
}


var x = 5;
print(plusOne(x));
# plusOne(38);  # If you uncomment this, the compiler errors out!