From a3d2d35fcbdc4ef5afc1fff2cc6d5ba34004cef4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn=20Steinbrink?= <bsteinbr@gmail.com>
Date: Tue, 3 Feb 2015 01:22:09 +0100
Subject: [PATCH] Avoid extra ref/deref cycles when converting &T to *T

---
 src/librustc_trans/trans/expr.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/librustc_trans/trans/expr.rs b/src/librustc_trans/trans/expr.rs
index cf85389cd5b57..223db47c57132 100644
--- a/src/librustc_trans/trans/expr.rs
+++ b/src/librustc_trans/trans/expr.rs
@@ -194,7 +194,8 @@ fn apply_adjustments<'blk, 'tcx>(bcx: Block<'blk, 'tcx>,
                 // a different region or mutability, but we don't care here. It might
                 // also be just in case we need to unsize. But if there are no nested
                 // adjustments then it should be a no-op).
-                Some(ty::AutoPtr(_, _, None)) if adj.autoderefs == 1 => {
+                Some(ty::AutoPtr(_, _, None)) |
+                Some(ty::AutoUnsafe(_, None)) if adj.autoderefs == 1 => {
                     match datum.ty.sty {
                         // Don't skip a conversion from Box<T> to &T, etc.
                         ty::ty_rptr(..) => {