#![feature(plugin)] #![plugin(clippy)] #![allow(unused, dead_code, needless_lifetimes)] #![deny(unused_lifetimes)] fn empty() { } fn used_lt<'a>(x: &'a u8) { } fn unused_lt<'a>(x: u8) { } fn unused_lt_transitive<'a, 'b: 'a>(x: &'b u8) { // 'a is useless here since it's not directly bound } fn lt_return<'a, 'b: 'a>(x: &'b u8) -> &'a u8 { panic!() } fn lt_return_only<'a>() -> &'a u8 { panic!() } fn unused_lt_blergh<'a>(x: Option>) { } trait Foo<'a> { fn x(&self, a: &'a u8); } impl<'a> Foo<'a> for u8 { fn x(&self, a: &'a u8) { } } struct Bar; impl Bar { fn x<'a>(&self) {} } // test for #489 (used lifetimes in bounds) pub fn parse<'a, I: Iterator>(_it: &mut I) { unimplemented!() } pub fn parse2<'a, I>(_it: &mut I) where I: Iterator{ unimplemented!() } struct X { x: u32 } impl X { fn self_ref_with_lifetime<'a>(&'a self) {} fn explicit_self_with_lifetime<'a>(self: &'a Self) {} } fn main() { }