1 #![allow(unused, dead_code, clippy::needless_lifetimes, clippy::needless_pass_by_value)]
2 #![warn(clippy::extra_unused_lifetimes)]
6 fn used_lt<'a>(x: &'a u8) {}
8 fn unused_lt<'a>(x: u8) {}
10 fn unused_lt_transitive<'a, 'b: 'a>(x: &'b u8) {
11 // 'a is useless here since it's not directly bound
14 fn lt_return<'a, 'b: 'a>(x: &'b u8) -> &'a u8 {
18 fn lt_return_only<'a>() -> &'a u8 {
22 fn unused_lt_blergh<'a>(x: Option<Box<dyn Send + 'a>>) {}
25 fn x(&self, a: &'a u8);
28 impl<'a> Foo<'a> for u8 {
29 fn x(&self, a: &'a u8) {}
38 // test for #489 (used lifetimes in bounds)
39 pub fn parse<'a, I: Iterator<Item = &'a str>>(_it: &mut I) {
42 pub fn parse2<'a, I>(_it: &mut I)
44 I: Iterator<Item = &'a str>,
54 fn self_ref_with_lifetime<'a>(&'a self) {}
55 fn explicit_self_with_lifetime<'a>(self: &'a Self) {}
58 // Methods implementing traits must have matching lifetimes
61 fn unused_lt<'a>(x: u8) {}
64 impl BadTrait for () {
65 fn unused_lt<'a>(_x: u8) {}