From b525abb7b2f6706e6f698dff5070484fec2dc017 Mon Sep 17 00:00:00 2001
From: Chris Wong <lambda.fairy@gmail.com>
Date: Mon, 17 Jul 2017 20:34:13 +1200
Subject: [PATCH] Add #[derive(Clone)] to TokenTreeIter

---
 src/libproc_macro/lib.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/libproc_macro/lib.rs b/src/libproc_macro/lib.rs
index 3c5d6aceca919..12ed4fba402bb 100644
--- a/src/libproc_macro/lib.rs
+++ b/src/libproc_macro/lib.rs
@@ -375,6 +375,7 @@ impl Literal {
 }
 
 /// An iterator over `TokenTree`s.
+#[derive(Clone)]
 #[unstable(feature = "proc_macro", issue = "38356")]
 pub struct TokenTreeIter {
     cursor: tokenstream::Cursor,