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[rust.git] / tests / ui / toplevel_ref_arg.rs

diff --git a/tests/ui/toplevel_ref_arg.rs b/tests/ui/toplevel_ref_arg.rs
index b051746bbd49bf115cc613c7739d9e52e0c59274..59759f1189333539a3b3c718e252f1fdb11fbfb1 100644 (file)
--- a/tests/ui/toplevel_ref_arg.rs
+++ b/tests/ui/toplevel_ref_arg.rs
@@ -1,34 +1,29 @@
-// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-#![warn(clippy::all)]
-#![allow(unused)]
-
-fn the_answer(ref mut x: u8) {
-    *x = 42;
-}
+// run-rustfix
+
+#![warn(clippy::toplevel_ref_arg)]
 
 fn main() {
-    let mut x = 0;
-    the_answer(x);
     // Closures should not warn
     let y = |ref x| println!("{:?}", x);
     y(1u8);
 
-    let ref x = 1;
+    let ref _x = 1;
 
-    let ref y: (&_, u8) = (&1, 2);
+    let ref _y: (&_, u8) = (&1, 2);
 
-    let ref z = 1 + 2;
+    let ref _z = 1 + 2;
 
-    let ref mut z = 1 + 2;
+    let ref mut _z = 1 + 2;
 
-    let (ref x, _) = (1, 2); // okay, not top level
+    let (ref x, _) = (1, 2); // ok, not top level
     println!("The answer is {}.", x);
+
+    let ref _x = vec![1, 2, 3];
+
+    // Make sure that allowing the lint works
+    #[allow(clippy::toplevel_ref_arg)]
+    let ref mut _x = 1_234_543;
+
+    // ok
+    for ref _x in 0..10 {}
 }