rust/src/test/ui/nll/issue-52534.rs

// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

#![feature(nll)]
#![allow(warnings)]

fn foo(_: impl FnOnce(&u32) -> &u32) {
}

fn baz(_: impl FnOnce(&u32, u32) -> &u32) {
}

fn bar() {
    let x = 22;
    foo(|a| &x)
}

fn foobar() {
    let y = 22;
    baz(|first, second| &y)
}

fn main() { }