From 8f7b8524d3a0491f668cbe92e19e101fef6bd2d0 Mon Sep 17 00:00:00 2001
From: Manish Goregaokar <manishsmail@gmail.com>
Date: Fri, 5 Feb 2016 16:04:59 +0530
Subject: [PATCH] Test for double-ref lint

---
 tests/compile-fail/methods.rs | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/tests/compile-fail/methods.rs b/tests/compile-fail/methods.rs
index 464a7c26e44..4e515c2aa12 100644
--- a/tests/compile-fail/methods.rs
+++ b/tests/compile-fail/methods.rs
@@ -1,8 +1,8 @@
 #![feature(plugin)]
 #![plugin(clippy)]
 
-#![allow(unused)]
 #![deny(clippy, clippy_pedantic)]
+#![allow(unused, print_stdout)]
 
 use std::collections::BTreeMap;
 use std::collections::HashMap;
@@ -334,3 +334,13 @@ fn clone_on_copy_generic<T: Copy>(t: T) {
     t.clone(); //~ERROR using `clone` on a `Copy` type
     Some(t).clone(); //~ERROR using `clone` on a `Copy` type
 }
+
+fn clone_on_double_ref() {
+    let x = vec![1];
+    let y = &&x;
+    let z: &Vec<_> = y.clone(); //~ERROR using `clone` on a double
+                                //~| HELP try dereferencing it
+                                //~| SUGGESTION let z: &Vec<_> = (*y).clone();
+                                //~^^^ERROR using `clone` on a `Copy` type
+    println!("{:p} {:p}",*y, z);
+}