src/test/run-pass/deriving-meta.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 // pretty-expanded FIXME #23616
  12
  13 use std::hash::{Hash, SipHasher};
  14
  15 #[derive(PartialEq, Clone, Hash)]
  16 struct Foo {
  17     bar: usize,
  18     baz: isize
  19 }
  20
  21 fn hash<T: Hash>(_t: &T) {}
  22
  23 pub fn main() {
  24     let a = Foo {bar: 4, baz: -3};
  25
  26     a == a;    // check for PartialEq impl w/o testing its correctness
  27     a.clone(); // check for Clone impl w/o testing its correctness
  28     hash(&a);  // check for Hash impl w/o testing its correctness
  29 }