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// Check "unused_lifetimes" lint on both async and sync functions
// Both cases should be diagnosed the same way.
//@ edition:2018
#![deny(unused_lifetimes)]
async fn async_wrong_without_args<'a>() {} //~ ERROR lifetime parameter `'a` never used
async fn async_wrong_1_lifetime<'a>(_: &i32) {} //~ ERROR lifetime parameter `'a` never used
async fn async_wrong_2_lifetimes<'a, 'b>(_: &'a i32, _: &i32) {} //~ ERROR lifetime parameter `'b` never used
async fn async_right_1_lifetime<'a>(_: &'a i32) {}
async fn async_right_2_lifetimes<'a, 'b>(_: &'a i32, _: &'b i32) {}
async fn async_right_trait_bound_lifetime<'a, I>(_: I)
where
I: Iterator<Item = &'a i32>
{}
fn wrong_without_args<'a>() {} //~ ERROR lifetime parameter `'a` never used
fn wrong_1_lifetime<'a>(_: &i32) {} //~ ERROR lifetime parameter `'a` never used
fn wrong_2_lifetimes<'a, 'b>(_: &'a i32, _: &i32) {} //~ ERROR lifetime parameter `'b` never used
fn right_1_lifetime<'a>(_: &'a i32) {}
fn right_2_lifetimes<'a, 'b>(_: &'a i32, _: &'b i32) {}
fn right_trait_bound_lifetime<'a, I>(_: I)
where
I: Iterator<Item = &'a i32>
{}
fn main() {}
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