rust/tests/ui/lint/lint-struct-necessary.rs

32 lines
554 B
Rust

#![allow(dead_code)]
#![deny(unused_parens)]
enum State {
Waiting { start_at: u64 }
}
struct Foo {}
fn main() {
let e = &mut State::Waiting { start_at: 0u64 };
match (&mut State::Waiting { start_at: 0u64 }) {
_ => {}
}
match (e) {
//~^ ERROR unnecessary parentheses around `match` scrutinee expression
_ => {}
}
match &(State::Waiting { start_at: 0u64 }) {
_ => {}
}
match (State::Waiting { start_at: 0u64 }) {
_ => {}
}
match (&&Foo {}) {
_ => {}
}
}