src/test/run-pass/associated-types-normalize-in-bounds.rs

// 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 we normalize associated types that appear in bounds; if
// we didn't, the call to `self.split2()` fails to type check.

// pretty-expanded FIXME #23616

use std::marker::PhantomData;

struct Splits<'a, T, P>(PhantomData<(&'a(),T,P)>);
struct SplitsN<I>(PhantomData<I>);

trait SliceExt2 {
    type Item;

    fn split2<'a, P>(&'a self, pred: P) -> Splits<'a, Self::Item, P>
        where P: FnMut(&Self::Item) -> bool;
    fn splitn2<'a, P>(&'a self, n: usize, pred: P) -> SplitsN<Splits<'a, Self::Item, P>>
        where P: FnMut(&Self::Item) -> bool;
}

impl<T> SliceExt2 for [T] {
    type Item = T;

    fn split2<P>(&self, pred: P) -> Splits<T, P> where P: FnMut(&T) -> bool {
        loop {}
    }

    fn splitn2<P>(&self, n: usize, pred: P) -> SplitsN<Splits<T, P>> where P: FnMut(&T) -> bool {
        self.split2(pred);
        loop {}
    }
}

fn main() { }