---

yaml
---
r: 175773
b: refs/heads/auto
c: 9252525
h: refs/heads/master
i:
  175771: 86114b7
v: v3

Author: bors

[refs]

@@ -10,7 +10,7 @@ refs/tags/release-0.3: b5f0d0f648d9a6153664837026ba1be43d3e2503
 refs/tags/release-0.3.1: 495bae036dfe5ec6ceafd3312b4dca48741e845b
 refs/tags/release-0.4: e828ea2080499553b97dfe33b3f4d472b4562ad7
 refs/tags/release-0.5: 7e3bcfbf21278251ee936ad53e92e9b719702d73
-refs/heads/auto: 9690be5ece5960d0bd8ecb68750b577b0835b6ba
+refs/heads/auto: 9252525196505f33b1986c78068d63e567c31c43
 refs/heads/servo: af82457af293e2a842ba6b7759b70288da276167
 refs/tags/release-0.6: b4ebcfa1812664df5e142f0134a5faea3918544c
 refs/tags/0.1: b19db808c2793fe2976759b85a355c3ad8c8b336

branches/auto/src/librustc/middle/ty_walk.rs

@@ -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) |

branches/auto/src/test/run-pass/issue-21363.rs

@@ -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() {}