src/test/run-pass/object-lifetime-default-from-rptr-struct.rs

   1 // Copyright 2015 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 // Test that the lifetime from the enclosing `&` is "inherited"
  12 // through the `MyBox` struct.
  13
  14 // pretty-expanded FIXME #23616
  15
  16 #![allow(dead_code)]
  17
  18 trait Test {
  19     fn foo(&self) { }
  20 }
  21
  22 struct SomeStruct<'a> {
  23     t: &'a MyBox<Test>,
  24     u: &'a MyBox<Test+'a>,
  25 }
  26
  27 struct MyBox<T:?Sized> {
  28     b: Box<T>
  29 }
  30
  31 fn a<'a>(t: &'a MyBox<Test>, mut ss: SomeStruct<'a>) {
  32     ss.t = t;
  33 }
  34
  35 fn b<'a>(t: &'a MyBox<Test>, mut ss: SomeStruct<'a>) {
  36     ss.u = t;
  37 }
  38
  39 // see also compile-fail/object-lifetime-default-from-rptr-box-error.rs
  40
  41 fn d<'a>(t: &'a MyBox<Test+'a>, mut ss: SomeStruct<'a>) {
  42     ss.u = t;
  43 }
  44
  45 fn main() {
  46 }