// G3 / 3.6: signature edits. Callers must be re-checked and recompiled with the callee.
//  v1: f(i32) -> i32 becomes f(i64, bool) -> i64 and both callers are updated in the same save.
//  v2: f's return type changes to u8 and the callers are NOT updated: refused, errors at the callers,
//      the running code unchanged.
fn f(x: i32) -> i32 {
    x * 3 + 1
}

fn caller_a() -> i64 {
    let mut s = 0i64;
    for i in 0..10 {
        s += f(i) as i64;
    }
    s
}

fn caller_b() -> i64 {
    f(1000) as i64 - 7
}

#[test]
fn run() {
    println!("out a {} b {}", caller_a(), caller_b());
}