1 // Check "unused_lifetimes" lint on both async and sync functions
2 // Both cases should be diagnosed the same way.
6 #![deny(unused_lifetimes)]
8 async fn async_wrong_without_args<'a>() {} //~ ERROR lifetime parameter `'a` never used
10 async fn async_wrong_1_lifetime<'a>(_: &i32) {} //~ ERROR lifetime parameter `'a` never used
12 async fn async_wrong_2_lifetimes<'a, 'b>(_: &'a i32, _: &i32) {} //~ ERROR lifetime parameter `'b` never used
14 async fn async_right_1_lifetime<'a>(_: &'a i32) {}
16 async fn async_right_2_lifetimes<'a, 'b>(_: &'a i32, _: &'b i32) {}
18 async fn async_right_trait_bound_lifetime<'a, I>(_: I)
20 I: Iterator<Item = &'a i32>
23 fn wrong_without_args<'a>() {} //~ ERROR lifetime parameter `'a` never used
25 fn wrong_1_lifetime<'a>(_: &i32) {} //~ ERROR lifetime parameter `'a` never used
27 fn wrong_2_lifetimes<'a, 'b>(_: &'a i32, _: &i32) {} //~ ERROR lifetime parameter `'b` never used
29 fn right_1_lifetime<'a>(_: &'a i32) {}
31 fn right_2_lifetimes<'a, 'b>(_: &'a i32, _: &'b i32) {}
33 fn right_trait_bound_lifetime<'a, I>(_: I)
35 I: Iterator<Item = &'a i32>