File: promotion.rs

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rustc 1.85.0%2Bdfsg3-1
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#![allow(arithmetic_overflow, unconditional_panic)]

// The only way to have promoteds that fail is in `const fn` called from `const`/`static`.
// Make sure that in a `const` block, we do not promote such calls.
const fn div_by_zero() -> i32 {
    1 / 0
}

const fn mk_false() -> bool {
    false
}

fn main() {
    let v = const {
        if mk_false() {
            let _x: &'static i32 = &div_by_zero();
            //~^ ERROR: temporary value dropped while borrowed
        }
        42
    };
}