-
Notifications
You must be signed in to change notification settings - Fork 12.5k
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Auto merge of #54701 - arielb1:outlives-later, r=nikomatsakis
normalize param-env type-outlives predicates last The normalization of type-outlives predicates can depend on misc. environment predicates, but not the other way around. Inferred lifetime bounds can propagate type-outlives bounds far and wide, so their normalization needs to work well. Fixes #54467 r? @nikomatsakis beta-nominating because this is required for inferred_outlives_bounds, which is in beta
- Loading branch information
Showing
3 changed files
with
172 additions
and
57 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,54 @@ | ||
// 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. | ||
|
||
pub trait Stream { | ||
type Item; | ||
type Error; | ||
} | ||
|
||
pub trait ParseError<I> { | ||
type Output; | ||
} | ||
|
||
impl ParseError<char> for u32 { | ||
type Output = (); | ||
} | ||
|
||
impl Stream for () { | ||
type Item = char; | ||
type Error = u32; | ||
} | ||
|
||
pub struct Lex<'a, I> | ||
where I: Stream, | ||
I::Error: ParseError<char>, | ||
<<I as Stream>::Error as ParseError<char>>::Output: 'a | ||
{ | ||
x: &'a <I::Error as ParseError<char>>::Output | ||
} | ||
|
||
pub struct Reserved<'a, I> where | ||
I: Stream<Item=char> + 'a, | ||
I::Error: ParseError<I::Item>, | ||
<<I as Stream>::Error as ParseError<char>>::Output: 'a | ||
|
||
{ | ||
x: Lex<'a, I> | ||
} | ||
|
||
fn main() { | ||
let r: Reserved<()> = Reserved { | ||
x: Lex { | ||
x: &() | ||
} | ||
}; | ||
|
||
let _v = r.x.x; | ||
} |