src/test/ui/rfc-2093-infer-outlives/enum.rs

   1 // Copyright 2018 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 // ignore-tidy-linelength
  12
  13 #![feature(rustc_attrs)]
  14
  15 // Needs an explicit where clause stating outlives condition. (RFC 2093)
  16
  17 // Type T needs to outlive lifetime 'a.
  18 #[rustc_outlives]
  19 enum Foo<'a, T> { //~ ERROR rustc_outlives
  20     One(Bar<'a, T>)
  21 }
  22
  23 // Type U needs to outlive lifetime 'b
  24 #[rustc_outlives]
  25 struct Bar<'b, U> { //~ ERROR rustc_outlives
  26     field2: &'b U
  27 }
  28
  29 // Type K needs to outlive lifetime 'c.
  30 #[rustc_outlives]
  31 enum Ying<'c, K> { //~ ERROR rustc_outlives
  32     One(&'c Yang<K>)
  33 }
  34
  35 struct Yang<V> {
  36     field2: V
  37 }
  38
  39 fn main() {}