File: constrained-late-bound-regions.rs

package info (click to toggle)
rustc 1.88.0%2Bdfsg1-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 934,128 kB
  • sloc: xml: 158,127; python: 36,062; javascript: 19,855; sh: 19,700; cpp: 18,947; ansic: 12,993; asm: 4,792; makefile: 690; lisp: 29; perl: 29; ruby: 19; sql: 11
file content (15 lines) | stat: -rw-r--r-- 393 bytes parent folder | download | duplicates (15) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
 
//@ check-pass
// Weak alias types constrain late-bound regions if their normalized form constrains them.

#![feature(lazy_type_alias)]
#![allow(incomplete_features)]

type Ref<'a> = &'a ();

type FnPtr = for<'a> fn(Ref<'a>) -> &'a (); // OK
type DynCl = dyn for<'a> Fn(Ref<'a>) -> &'a (); // OK

fn map0(_: Ref) -> Ref { &() } // OK
fn map1(_: Ref<'_>) -> Ref<'_> { &() } // OK

fn main() {}