| // Copyright 2012 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. |
| |
| // aux-build:lifetime_bound_will_change_warning_lib.rs |
| |
| // Test that various corner cases cause an error. These are tests |
| // that used to pass before we tweaked object defaults. |
| |
| #![allow(dead_code)] |
| #![allow(unused_variables)] |
| #![feature(rustc_attrs)] |
| |
| extern crate lifetime_bound_will_change_warning_lib as lib; |
| |
| fn just_ref(x: &Fn()) { |
| } |
| |
| fn ref_obj(x: &Box<Fn()>) { |
| // this will change to &Box<Fn()+'static>... |
| |
| // Note: no warning is issued here, because the type of `x` will change to 'static |
| if false { ref_obj(x); } |
| } |
| |
| fn test1<'a>(x: &'a Box<Fn()+'a>) { |
| // just_ref will stay the same. |
| just_ref(&**x) |
| } |
| |
| fn test1cc<'a>(x: &'a Box<Fn()+'a>) { |
| // same as test1, but cross-crate |
| lib::just_ref(&**x) |
| } |
| |
| fn test2<'a>(x: &'a Box<Fn()+'a>) { |
| // but ref_obj will not, so warn. |
| ref_obj(x) //~ ERROR mismatched types |
| } |
| |
| fn test2cc<'a>(x: &'a Box<Fn()+'a>) { |
| // same as test2, but cross crate |
| lib::ref_obj(x) //~ ERROR mismatched types |
| } |
| |
| fn test3<'a>(x: &'a Box<Fn()+'static>) { |
| // here, we have a 'static bound, so even when ref_obj changes, no error results |
| ref_obj(x) |
| } |
| |
| fn test3cc<'a>(x: &'a Box<Fn()+'static>) { |
| // same as test3, but cross crate |
| lib::ref_obj(x) |
| } |
| |
| #[rustc_error] |
| fn main() { |
| } |