| // 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. |
| |
| // Regression test for #48071. This test used to ICE because -- in |
| // the leak-check -- it would pass since we knew that the return type |
| // was `'static`, and hence `'static: 'a` was legal even for a |
| // placeholder region, but in NLL land it would fail because we had |
| // rewritten `'static` to a region variable. |
| // |
| // compile-pass |
| |
| #![allow(warnings)] |
| #![feature(dyn_trait)] |
| #![feature(nll)] |
| |
| trait Foo { |
| fn foo(&self) { } |
| } |
| |
| impl Foo for () { |
| } |
| |
| type MakeFooFn = for<'a> fn(&'a u8) -> Box<dyn Foo + 'a>; |
| |
| fn make_foo(x: &u8) -> Box<dyn Foo + 'static> { |
| Box::new(()) |
| } |
| |
| fn main() { |
| let x: MakeFooFn = make_foo as MakeFooFn; |
| } |
