From db45be2616edb658427fb4986d2418b22150cb16 Mon Sep 17 00:00:00 2001
From: Jorge Aparicio <japaricious@gmail.com>
Date: Sun, 14 Dec 2014 23:07:14 -0500
Subject: [PATCH] librustc_driver: use `#[deriving(Copy)]`

---
 src/librustc_driver/pretty.rs | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/src/librustc_driver/pretty.rs b/src/librustc_driver/pretty.rs
index 57004d71c75..2eb9d2c67a7 100644
--- a/src/librustc_driver/pretty.rs
+++ b/src/librustc_driver/pretty.rs
@@ -39,7 +39,7 @@ use std::option;
 use std::str::FromStr;
 use arena::TypedArena;
 
-#[deriving(PartialEq, Show)]
+#[deriving(Copy, PartialEq, Show)]
 pub enum PpSourceMode {
     PpmNormal,
     PpmExpanded,
@@ -49,16 +49,12 @@ pub enum PpSourceMode {
     PpmExpandedHygiene,
 }
 
-impl Copy for PpSourceMode {}
-
-#[deriving(PartialEq, Show)]
+#[deriving(Copy, PartialEq, Show)]
 pub enum PpMode {
     PpmSource(PpSourceMode),
     PpmFlowGraph,
 }
 
-impl Copy for PpMode {}
-
 pub fn parse_pretty(sess: &Session, name: &str) -> (PpMode, Option<UserIdentifiedItem>) {
     let mut split = name.splitn(1, '=');
     let first = split.next().unwrap();