src/test/ui/nll/issue-52113.rs

   1 // Copyright 2012 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
  12 #![allow(warnings)]
  13 #![feature(nll)]
  14
  15 trait Bazinga { }
  16 impl<F> Bazinga for F { }
  17
  18 fn produce1<'a>(data: &'a u32) -> impl Bazinga + 'a {
  19     let x = move || {
  20         let _data: &'a u32 = data;
  21     };
  22     x
  23 }
  24
  25 fn produce2<'a>(data: &'a mut Vec<&'a u32>, value: &'a u32) -> impl Bazinga + 'a {
  26     let x = move || {
  27         let value: &'a u32 = value;
  28         data.push(value);
  29     };
  30     x
  31 }
  32
  33
  34 fn produce3<'a, 'b: 'a>(data: &'a mut Vec<&'a u32>, value: &'b u32) -> impl Bazinga + 'a {
  35     let x = move || {
  36         let value: &'a u32 = value;
  37         data.push(value);
  38     };
  39     x
  40 }
  41
  42 fn produce_err<'a, 'b: 'a>(data: &'b mut Vec<&'b u32>, value: &'a u32) -> impl Bazinga + 'b {
  43     let x = move || {
  44         let value: &'a u32 = value;
  45         data.push(value);
  46     };
  47     x   //~ ERROR unsatisfied lifetime constraints
  48 }
  49
  50 fn main() { }