From df76442c99635e176f70d2e7977317a871b8f906 Mon Sep 17 00:00:00 2001
From: Niko Matsakis <niko@alum.mit.edu>
Date: Thu, 12 Feb 2015 12:49:10 -0500
Subject: [PATCH] Fallout: Accepter trait needs phantomdata. This seems like it
 should be migrated to an associated type anyway.

---
 src/libstd/old_io/mod.rs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/libstd/old_io/mod.rs b/src/libstd/old_io/mod.rs
index 9655da92e56..8b9eb44066f 100644
--- a/src/libstd/old_io/mod.rs
+++ b/src/libstd/old_io/mod.rs
@@ -252,7 +252,7 @@ use error::Error;
 use fmt;
 use isize;
 use iter::{Iterator, IteratorExt};
-use marker::Sized;
+use marker::{PhantomFn, Sized};
 use mem::transmute;
 use ops::FnOnce;
 use option::Option;
@@ -1572,7 +1572,9 @@ pub trait Seek {
 /// connections.
 ///
 /// Doing so produces some sort of Acceptor.
-pub trait Listener<T, A: Acceptor<T>> {
+pub trait Listener<T, A: Acceptor<T>>
+    : PhantomFn<T,T> // FIXME should be an assoc type anyhow
+{
     /// Spin up the listener and start queuing incoming connections
     ///
     /// # Error