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Auto merge of #21574 - japaric:walk-projections, r=nikomatsakis

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closes #21363

r? @nikomatsakis
This commit is contained in:
bors 2015-01-25 23:55:55 +00:00
commit 47621db62c
2 changed files with 25 additions and 1 deletions
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5
src/librustc/middle/ty_walk.rs
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@ -37,8 +37,11 @@ impl<'tcx> TypeWalker<'tcx> {
ty::ty_projection(ref data) => {
self.push_reversed(data.trait_ref.substs.types.as_slice());
}
ty::ty_trait(box ty::TyTrait { ref principal, .. }) => {
ty::ty_trait(box ty::TyTrait { ref principal, ref bounds }) => {
self.push_reversed(principal.substs().types.as_slice());
self.push_reversed(bounds.projection_bounds.iter().map(|pred| {
pred.0.ty
}).collect::<Vec<_>>().as_slice());
}
ty::ty_enum(_, ref substs) |
ty::ty_struct(_, ref substs) |

21
src/test/run-pass/issue-21363.rs Normal file
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@ -0,0 +1,21 @@
// 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.
#![no_implicit_prelude]
trait Iterator {
type Item;
}
impl<'a, T> Iterator for &'a mut (Iterator<Item=T> + 'a) {
type Item = T;
}
fn main() {}