rust/tests/ui/diverging_sub_expression.rs

#![feature(never_type)]

#![warn(diverging_sub_expression)]
#![allow(match_same_arms, logic_bug)]

#[allow(empty_loop)]
fn diverge() -> ! { loop {} }

struct A;

impl A {
    fn foo(&self) -> ! { diverge() }
}

#[allow(unused_variables, unnecessary_operation, short_circuit_statement)]
fn main() {
    let b = true;
    b || diverge();
    b || A.foo();
}

#[allow(dead_code, unused_variables)]
fn foobar() {
    loop {
        let x = match 5 {
            4 => return,
            5 => continue,
            6 => true || return,
            7 => true || continue,
            8 => break,
            9 => diverge(),
            3 => true || diverge(),
            10 => match 42 {
                99 => return,
                _ => true || panic!("boo"),
            },
            _ => true || break,
        };
    }
}