src/test/ui/lifetimes/lifetime-doesnt-live-long-enough.rs

   1 // Copyright 2014 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 trait ListItem<'a> {
  12     fn list_name() -> &'a str;
  13 }
  14
  15 trait Collection { fn len(&self) -> usize; }
  16
  17 struct List<'a, T: ListItem<'a>> {
  18     slice: &'a [T]
  19     //~^ ERROR may not live long enough
  20 }
  21
  22 impl<'a, T: ListItem<'a>> Collection for List<'a, T> {
  23     fn len(&self) -> usize {
  24         0
  25     }
  26 }
  27
  28 struct Foo<T> {
  29     foo: &'static T
  30     //~^ ERROR may not live long enough
  31 }
  32
  33 trait X<K>: Sized {
  34     fn foo<'a, L: X<&'a Nested<K>>>();
  35     //~^ ERROR may not live long enough
  36
  37     // check that we give a sane error for `Self`
  38     fn bar<'a, L: X<&'a Nested<Self>>>();
  39     //~^ ERROR may not live long enough
  40
  41     // check that we give a sane error for nested generics
  42     fn baz<'a, L, M: X<&'a Nested<L>>>() {
  43         //~^ ERROR may not live long enough
  44     }
  45 }
  46
  47 trait TraitB {}
  48
  49 struct Nested<K>(K);
  50 impl<K> Nested<K> {
  51     fn generic_in_parent<'a, L: X<&'a Nested<K>>>() {
  52         //~^ ERROR may not live long enough
  53     }
  54     fn generic_in_child<'a, 'b, L: X<&'a Nested<M>>, M: 'b>() {
  55         //~^ ERROR may not live long enough
  56     }
  57 }
  58
  59 fn main() {}