user0/rust
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Auto merge of #27096 - apasel422:issue-26217, r=nikomatsakis

Browse source 
closes #26217

r? @nikomatsakis
This commit is contained in:
bors 2015-07-18 11:02:58 +00:00
commit a27fed7cbd
3 changed files with 40 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

59
src/test/compile-fail/hrtb-type-outlives.rs
View file

@ -1,59 +0,0 @@
// Copyright 2014 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.
// Test what happens when a HR obligation is applied to an impl with
// "outlives" bounds. Currently we're pretty conservative here; this
// will probably improve in time.
trait Foo<X> {
fn foo(&self, x: X) { }
}
fn want_foo<T>()
where T : for<'a> Foo<&'a isize>
{
}
///////////////////////////////////////////////////////////////////////////
// Expressed as a where clause
struct SomeStruct<X> {
x: X
}
impl<'a,X> Foo<&'a isize> for SomeStruct<X>
where X : 'a
{
}
fn one() {
// In fact there is no good reason for this to be an error, but
// whatever, I'm mostly concerned it doesn't ICE right now:
want_foo::<SomeStruct<usize>>();
//~^ ERROR requirement `for<'a> usize : 'a` is not satisfied
}
///////////////////////////////////////////////////////////////////////////
// Expressed as shorthand
struct AnotherStruct<X> {
x: X
}
impl<'a,X:'a> Foo<&'a isize> for AnotherStruct<X>
{
}
fn two() {
want_foo::<AnotherStruct<usize>>();
//~^ ERROR requirement `for<'a> usize : 'a` is not satisfied
}
fn main() { }

16
src/test/compile-fail/issue-26217.rs Normal file
View file

@ -0,0 +1,16 @@
// Copyright 2015 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.
fn foo<T>() where for<'a> T: 'a {}
fn main<'a>() {
foo::<&'a i32>();
//~^ ERROR the type `&'a i32` does not fulfill the required lifetime
}