| // Copyright 2014 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| // Tests that nested vtables work with overloaded calls. |
| |
| // pretty-expanded FIXME #23616 |
| |
| #![feature(unboxed_closures, fn_traits)] |
| |
| use std::marker::PhantomData; |
| use std::ops::Fn; |
| use std::ops::Add; |
| |
| struct G<A>(PhantomData<A>); |
| |
| impl<'a, A: Add<i32, Output=i32>> Fn<(A,)> for G<A> { |
| extern "rust-call" fn call(&self, (arg,): (A,)) -> i32 { |
| arg.add(1) |
| } |
| } |
| |
| impl<'a, A: Add<i32, Output=i32>> FnMut<(A,)> for G<A> { |
| extern "rust-call" fn call_mut(&mut self, args: (A,)) -> i32 { self.call(args) } |
| } |
| |
| impl<'a, A: Add<i32, Output=i32>> FnOnce<(A,)> for G<A> { |
| type Output = i32; |
| extern "rust-call" fn call_once(self, args: (A,)) -> i32 { self.call(args) } |
| } |
| |
| fn main() { |
| // ICE trigger |
| (G(PhantomData))(1); |
| } |