// 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 or the MIT license // , 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 bar() { let x = 22; foo(|a| &x) } fn main() { }