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use std::collections::HashSet;
// See rust-lang/rust-clippy#2774.
#[derive(Eq, PartialEq, Debug, Hash)]
pub struct Bar {
foo: Foo,
}
#[derive(Eq, PartialEq, Debug, Hash)]
pub struct Foo;
#[allow(clippy::implicit_hasher)]
// This should not cause a "cannot relate bound region" ICE.
pub fn add_barfoos_to_foos<'a>(bars: &HashSet<&'a Bar>) {
//~^ ERROR: the following explicit lifetimes could be elided: 'a
//~| NOTE: `-D clippy::needless-lifetimes` implied by `-D warnings`
let mut foos = HashSet::new();
foos.extend(bars.iter().map(|b| &b.foo));
}
#[allow(clippy::implicit_hasher)]
// Also, this should not cause a "cannot relate bound region" ICE.
pub fn add_barfoos_to_foos2(bars: &HashSet<&Bar>) {
let mut foos = HashSet::new();
foos.extend(bars.iter().map(|b| &b.foo));
}
fn main() {}
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