Rollup merge of rust-lang#22620 - edwardw:issue-22356, r=brson

 PR rust-lang#22436 has fixed it.

Closes rust-lang#22356

Author: Manishearth

src/test/run-pass/issue-22356.rs

@@ -0,0 +1,39 @@
+// 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 <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.
+
+use std::marker::{PhantomData, PhantomFn};
+
+pub struct Handle<T, I>(T, I);
+
+impl<T, I> Handle<T, I> {
+    pub fn get_info(&self) -> &I {
+        let Handle(_, ref info) = *self;
+        info
+    }
+}
+
+pub struct BufferHandle<D: Device, T> {
+    raw: RawBufferHandle<D>,
+    _marker: PhantomData<T>,
+}
+
+impl<D: Device, T> BufferHandle<D, T> {
+    pub fn get_info(&self) -> &String {
+        self.raw.get_info()
+    }
+}
+
+pub type RawBufferHandle<D: Device> = Handle<<D as Device>::Buffer, String>;
+
+pub trait Device: PhantomFn<Self> {
+    type Buffer;
+}
+
+fn main() {}