// Copyright 2015 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 or the MIT license // , at your // option. This file may not be copied, modified, or distributed // except according to those terms. #![feature(unboxed_closures)] struct Foo; impl<'a, T> Fn<(&'a T,)> for Foo { extern "rust-call" fn call(&self, (_,): (T,)) {} //~^ ERROR: has an incompatible type for trait //~| expected reference } impl<'a, T> FnMut<(&'a T,)> for Foo { extern "rust-call" fn call_mut(&mut self, (_,): (T,)) {} //~^ ERROR: has an incompatible type for trait //~| expected reference } impl<'a, T> FnOnce<(&'a T,)> for Foo { type Output = (); extern "rust-call" fn call_once(self, (_,): (T,)) {} //~^ ERROR: has an incompatible type for trait //~| expected reference } fn main() {}