From 839a9de8d385a082b571a88ff5a7f0c620afed1c Mon Sep 17 00:00:00 2001
From: Flavio Percoco <flaper87@gmail.com>
Date: Sat, 24 Jan 2015 15:08:01 +0100
Subject: [PATCH] Prefer other implementations over default ones

---
 src/librustc/middle/traits/select.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/librustc/middle/traits/select.rs b/src/librustc/middle/traits/select.rs
index 15a1e3ad34b..b670c9cb1e1 100644
--- a/src/librustc/middle/traits/select.rs
+++ b/src/librustc/middle/traits/select.rs
@@ -1273,6 +1273,10 @@ fn candidate_should_be_dropped_in_favor_of<'o>(&mut self,
                 // #18453.
                 true
             }
+            (&DefaultTraitCandidate(_), _) => {
+                // Prefer other candidates over default implementations.
+                true
+            }
             (&ProjectionCandidate, &ParamCandidate(_)) => {
                 // FIXME(#20297) -- this gives where clauses precedent
                 // over projections. Really these are just two means
-- 
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