src/test/run-pass/deriving/deriving-meta-multiple.rs

   1 // Copyright 2013-2014 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 // run-pass
  12 #![allow(unused_must_use)]
  13 #![allow(unused_imports)]
  14 // pretty-expanded FIXME #23616
  15 #![allow(deprecated)]
  16
  17 use std::hash::{Hash, SipHasher};
  18
  19 // testing multiple separate deriving attributes
  20 #[derive(PartialEq)]
  21 #[derive(Clone)]
  22 #[derive(Hash)]
  23 struct Foo {
  24     bar: usize,
  25     baz: isize
  26 }
  27
  28 fn hash<T: Hash>(_t: &T) {}
  29
  30 pub fn main() {
  31     let a = Foo {bar: 4, baz: -3};
  32
  33     a == a;    // check for PartialEq impl w/o testing its correctness
  34     a.clone(); // check for Clone impl w/o testing its correctness
  35     hash(&a);  // check for Hash impl w/o testing its correctness
  36 }