src/test/run-pass/issue-19982.rs

   1 // Copyright 2015 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 #![feature(fn_traits, unboxed_closures)]
  14
  15 #[allow(dead_code)]
  16 struct Foo;
  17
  18 impl<'a> Fn<(&'a (),)> for Foo {
  19     extern "rust-call" fn call(&self, (_,): (&(),)) {}
  20 }
  21
  22 impl<'a> FnMut<(&'a (),)> for Foo {
  23     extern "rust-call" fn call_mut(&mut self, (_,): (&(),)) {}
  24 }
  25
  26 impl<'a> FnOnce<(&'a (),)> for Foo {
  27     type Output = ();
  28
  29     extern "rust-call" fn call_once(self, (_,): (&(),)) {}
  30 }
  31
  32 fn main() {}