src/test/run-pass/empty-allocation-non-null.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 pub fn main() {
  12     assert!(Some(Box::new(())).is_some());
  13
  14     let xs: Box<[()]> = Box::<[(); 0]>::new([]);
  15     assert!(Some(xs).is_some());
  16
  17     struct Foo;
  18     assert!(Some(Box::new(Foo)).is_some());
  19
  20     let ys: Box<[Foo]> = Box::<[Foo; 0]>::new([]);
  21     assert!(Some(ys).is_some());
  22 }