65 lines
1.7 KiB
Rust
65 lines
1.7 KiB
Rust
// 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() {
|
|
}
|