src/test/compile-fail/borrowck-borrowed-uniq-rvalue.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 //buggy.rs
  12
  13 #![feature(box_syntax)]
  14
  15 extern crate collections;
  16 use std::collections::HashMap;
  17
  18 fn main() {
  19     let tmp;
  20     let mut buggy_map: HashMap<usize, &usize> = HashMap::new();
  21     buggy_map.insert(42, &*box 1); //~ ERROR borrowed value does not live long enough
  22
  23     // but it is ok if we use a temporary
  24     tmp = box 2;
  25     buggy_map.insert(43, &*tmp);
  26 }