src/test/run-pass/issue-33687.rs

   1 // Copyright 2016 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 #![feature(unboxed_closures)]
  12 #![feature(fn_traits)]
  13
  14 struct Test;
  15
  16 impl FnOnce<(u32, u32)> for Test {
  17     type Output = u32;
  18
  19     extern "rust-call" fn call_once(self, (a, b): (u32, u32)) -> u32 {
  20         a + b
  21     }
  22 }
  23
  24 fn main() {
  25     assert_eq!(Test(1u32, 2u32), 3u32);
  26 }