src/test/compile-fail/borrowck/borrowck-let-suggestion-suffixes.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 fn f() {
  12     let old = ['o'];         // statement 0
  13     let mut v1 = Vec::new(); // statement 1
  14
  15     let mut v2 = Vec::new(); // statement 2
  16
  17     let young = ['y'];       // statement 3
  18
  19     v2.push(&young[0]);      // statement 4
  20     //~^ ERROR `young[..]` does not live long enough
  21     //~| NOTE does not live long enough
  22     //~| NOTE values in a scope are dropped in the opposite order they are created
  23
  24     let mut v3 = Vec::new(); // statement 5
  25
  26     v3.push(&'x');           // statement 6
  27     //~^ ERROR borrowed value does not live long enough
  28     //~| NOTE temporary value created here
  29     //~| NOTE temporary value only lives until here
  30     //~| NOTE consider using a `let` binding to increase its lifetime
  31
  32     {
  33
  34         let mut v4 = Vec::new(); // (sub) statement 0
  35
  36         v4.push(&'y');
  37         //~^ ERROR borrowed value does not live long enough
  38         //~| NOTE temporary value created here
  39         //~| NOTE temporary value only lives until here
  40         //~| NOTE consider using a `let` binding to increase its lifetime
  41
  42     }                       // (statement 7)
  43     //~^ NOTE temporary value needs to live until here
  44
  45     let mut v5 = Vec::new(); // statement 8
  46
  47     v5.push(&'z');
  48     //~^ ERROR borrowed value does not live long enough
  49     //~| NOTE temporary value created here
  50     //~| NOTE temporary value only lives until here
  51     //~| NOTE consider using a `let` binding to increase its lifetime
  52
  53     v1.push(&old[0]);
  54 }
  55 //~^ NOTE borrowed value dropped before borrower
  56 //~| NOTE temporary value needs to live until here
  57 //~| NOTE temporary value needs to live until here
  58
  59 fn main() {
  60     f();
  61 }