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rust-clippy/tests/compile-fail/diverging_sub_expression.rs
2016-09-13 14:52:21 +02:00

37 lines
1,006 B
Rust

#![feature(plugin, never_type)]
#![plugin(clippy)]
#![deny(diverging_sub_expression)]
#[allow(empty_loop)]
fn diverge() -> ! { loop {} }
struct A;
impl A {
fn foo(&self) -> ! { diverge() }
}
#[allow(unused_variables, unnecessary_operation)]
fn main() {
let b = true;
b || diverge(); //~ ERROR sub-expression diverges
b || A.foo(); //~ ERROR sub-expression diverges
let y = (5, diverge(), 6); //~ ERROR sub-expression diverges
println!("{}", y.1);
}
#[allow(dead_code, unused_variables)]
fn foobar() {
loop {
let x = match 5 {
4 => return,
5 => continue,
6 => (println!("foo"), return), //~ ERROR sub-expression diverges
7 => (println!("bar"), continue), //~ ERROR sub-expression diverges
8 => break,
9 => diverge(),
3 => (println!("moo"), diverge()), //~ ERROR sub-expression diverges
_ => (println!("boo"), break), //~ ERROR sub-expression diverges
};
}
}