src/test/run-pass/new-box-syntax.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 // pretty-expanded FIXME #23616
  12
  13 /* Any copyright is dedicated to the Public Domain.
  14  * http://creativecommons.org/publicdomain/zero/1.0/ */
  15
  16 #![allow(dead_code, unused_variables)]
  17 #![feature(box_syntax, box_heap)]
  18 #![feature(placement_in_syntax)]
  19
  20 // during check-pretty, the expanded code needs to opt into these
  21 // features
  22 #![feature(placement_new_protocol, core_intrinsics)]
  23
  24 // Tests that the new `box` syntax works with unique pointers.
  25
  26 use std::boxed::{Box, HEAP};
  27
  28 struct Structure {
  29     x: isize,
  30     y: isize,
  31 }
  32
  33 pub fn main() {
  34     let x: Box<isize> = box(HEAP) 2;
  35     let y: Box<isize> = box 2;
  36     let b: Box<isize> = box()(1 + 2);
  37     let c = box()(3 + 4);
  38
  39     let s: Box<Structure> = box Structure {
  40         x: 3,
  41         y: 4,
  42     };
  43 }