src/test/ui/issues/issue-49973.rs

// run-pass
#[derive(Debug)]
#[repr(i32)]
enum E {
    Min = -2147483648i32,
    _Max = 2147483647i32,
}

fn main() {
    assert_eq!(Some(E::Min).unwrap() as i32, -2147483648i32);
}