// Copyright 2017 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. // compile-flags: -Z borrowck=mir -Z nll #![allow(dead_code)] fn bar<'a>(input: &'a u32, f: fn(&'a u32) -> &'a u32) -> &'static u32 { // Here the NLL checker must relate the types in `f` to the types // in `g`. These are related via the `UnsafeFnPointer` cast. let g: unsafe fn(_) -> _ = f; //~^ WARNING not reporting region error due to -Znll //~| ERROR free region `'a` does not outlive free region `'static` unsafe { g(input) } } fn main() {}