rust/src/test/compile-fail/unboxed-closure-sugar-lifetime-elision.rs

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// 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.
// Test that the unboxed closure sugar can be used with an arbitrary
// struct type and that it is equivalent to the same syntax using
// angle brackets. This test covers only simple types and in
// particular doesn't test bound regions.
#![feature(unboxed_closures)]
#![allow(dead_code)]
trait Foo<T,U> {
fn dummy(&self, t: T, u: U);
}
trait Eq<Sized? X> for Sized? { }
impl<Sized? X> Eq<X> for X { }
fn eq<Sized? A,Sized? B:Eq<A>>() { }
fn main() {
eq::< for<'a> Foo<(&'a int,), &'a int>,
Foo(&int) -> &int >();
eq::< for<'a> Foo<(&'a int,), (&'a int, &'a int)>,
Foo(&int) -> (&int, &int) >();
let _: Foo(&int, &uint) -> &uint; //~ ERROR missing lifetime specifier
}